FsPerf.cpp@ 76914

Last change on this file since 76914 was 76914, checked in by vboxsync, 6 years ago
FsPerf: Mostly done on windows. bugref:9172
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1	/* $Id: FsPerf.cpp 76914 2019-01-21 12:19:00Z vboxsync $ */
2	/** @file
3	* FsPerf - File System (Shared Folders) Performance Benchmark.
4	*/
5
6	/*
7	* Copyright (C) 2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <iprt/alloca.h>
32	#include <iprt/asm.h>
33	#include <iprt/assert.h>
34	#include <iprt/err.h>
35	#include <iprt/dir.h>
36	#include <iprt/file.h>
37	#include <iprt/getopt.h>
38	#include <iprt/initterm.h>
39	#include <iprt/list.h>
40	#include <iprt/mem.h>
41	#include <iprt/message.h>
42	#include <iprt/param.h>
43	#include <iprt/path.h>
44	#include <iprt/process.h>
45	#include <iprt/rand.h>
46	#include <iprt/string.h>
47	#include <iprt/stream.h>
48	#include <iprt/test.h>
49	#include <iprt/time.h>
50	#include <iprt/thread.h>
51	#include <iprt/zero.h>
52
53	#ifdef RT_OS_WINDOWS
54	# include <iprt/nt/nt-and-windows.h>
55	#endif
56
57
58	/*********************************************************************************************************************************
59	* Defined Constants And Macros *
60	*********************************************************************************************************************************/
61	/**
62	* Macro for profiling @a a_fnCall (typically forced inline) for about @a a_cNsTarget ns.
63	*
64	* Always does an even number of iterations.
65	*/
66	#define PROFILE_FN(a_fnCall, a_cNsTarget, a_szDesc) \
67	do { \
68	/* Estimate how many iterations we need to fill up the given timeslot: */ \
69	fsPerfYield(); \
70	uint64_t nsStart = RTTimeNanoTS(); \
71	uint64_t ns; \
72	do \
73	ns = RTTimeNanoTS(); \
74	while (ns == nsStart); \
75	nsStart = ns; \
76	\
77	uint64_t iIteration = 0; \
78	do \
79	{ \
80	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
81	iIteration++; \
82	ns = RTTimeNanoTS() - nsStart; \
83	} while (ns < RT_NS_10MS \|\| (iIteration & 1)); \
84	ns /= iIteration; \
85	if (ns > g_nsPerNanoTSCall + 32) \
86	ns -= g_nsPerNanoTSCall; \
87	\
88	uint64_t cIterations = (a_cNsTarget) / ns; \
89	if (cIterations <= 1) \
90	cIterations = 2; \
91	else if (cIterations & 1) \
92	cIterations++; \
93	\
94	/* Do the actual profiling: */ \
95	fsPerfYield(); \
96	iIteration = 0; \
97	nsStart = RTTimeNanoTS(); \
98	for (; iIteration < cIterations; iIteration++) \
99	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
100	ns = RTTimeNanoTS() - nsStart; \
101	RTTestIValueF(ns / cIterations, RTTESTUNIT_NS_PER_OCCURRENCE, a_szDesc); \
102	if (g_fShowDuration) \
103	RTTestIValueF(ns, RTTESTUNIT_NS, "%s duration", a_szDesc); \
104	} while (0)
105
106
107	/**
108	* Macro for profiling an operation on each file in the manytree directory tree.
109	*
110	* Always does an even number of tree iterations.
111	*/
112	#define PROFILE_MANYTREE_FN(a_szPath, a_fnCall, a_cEstimationIterations, a_cNsTarget, a_szDesc) \
113	do { \
114	if (!g_fManyFiles) \
115	break; \
116	\
117	/* Estimate how many iterations we need to fill up the given timeslot: */ \
118	fsPerfYield(); \
119	uint64_t nsStart = RTTimeNanoTS(); \
120	uint64_t ns; \
121	do \
122	ns = RTTimeNanoTS(); \
123	while (ns == nsStart); \
124	nsStart = ns; \
125	\
126	PFSPERFNAMEENTRY pCur; \
127	uint64_t iIteration = 0; \
128	do \
129	{ \
130	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
131	{ \
132	memcpy(a_szPath, pCur->szName, pCur->cchName); \
133	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
134	{ \
135	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
136	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
137	} \
138	} \
139	iIteration++; \
140	ns = RTTimeNanoTS() - nsStart; \
141	} while (ns < RT_NS_10MS \|\| (iIteration & 1)); \
142	ns /= iIteration; \
143	if (ns > g_nsPerNanoTSCall + 32) \
144	ns -= g_nsPerNanoTSCall; \
145	\
146	uint32_t cIterations = (a_cNsTarget) / ns; \
147	if (cIterations <= 1) \
148	cIterations = 2; \
149	else if (cIterations & 1) \
150	cIterations++; \
151	\
152	/* Do the actual profiling: */ \
153	fsPerfYield(); \
154	uint32_t cCalls = 0; \
155	nsStart = RTTimeNanoTS(); \
156	for (iIteration = 0; iIteration < cIterations; iIteration++) \
157	{ \
158	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
159	{ \
160	memcpy(a_szPath, pCur->szName, pCur->cchName); \
161	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
162	{ \
163	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
164	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
165	cCalls++; \
166	} \
167	} \
168	} \
169	ns = RTTimeNanoTS() - nsStart; \
170	RTTestIValueF(ns / cCalls, RTTESTUNIT_NS_PER_OCCURRENCE, a_szDesc); \
171	if (g_fShowDuration) \
172	RTTestIValueF(ns, RTTESTUNIT_NS, "%s duration", a_szDesc); \
173	} while (0)
174
175
176	/**
177	* Execute a_fnCall for each file in the manytree.
178	*/
179	#define DO_MANYTREE_FN(a_szPath, a_fnCall) \
180	do { \
181	PFSPERFNAMEENTRY pCur; \
182	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
183	{ \
184	memcpy(a_szPath, pCur->szName, pCur->cchName); \
185	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
186	{ \
187	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
188	a_fnCall; \
189	} \
190	} \
191	} while (0)
192
193
194	/** @def FSPERF_VERR_PATH_NOT_FOUND
195	* Hides the fact that we only get VERR_PATH_NOT_FOUND on non-unix systems. */
196	#if defined(RT_OS_WINDOWS) //\|\| defined(RT_OS_OS2) - using posix APIs IIRC, so lost in translation.
197	# define FSPERF_VERR_PATH_NOT_FOUND VERR_PATH_NOT_FOUND
198	#else
199	# define FSPERF_VERR_PATH_NOT_FOUND VERR_FILE_NOT_FOUND
200	#endif
201
202
203	/*********************************************************************************************************************************
204	* Structures and Typedefs *
205	*********************************************************************************************************************************/
206	typedef struct FSPERFNAMEENTRY
207	{
208	RTLISTNODE Entry;
209	uint16_t cchName;
210	char szName[RT_FLEXIBLE_ARRAY];
211	} FSPERFNAMEENTRY;
212	typedef FSPERFNAMEENTRY *PFSPERFNAMEENTRY;
213
214
215	enum
216	{
217	kCmdOpt_First = 128,
218
219	kCmdOpt_ManyFiles = kCmdOpt_First,
220	kCmdOpt_NoManyFiles,
221	kCmdOpt_Open,
222	kCmdOpt_NoOpen,
223	kCmdOpt_FStat,
224	kCmdOpt_NoFStat,
225	kCmdOpt_FChMod,
226	kCmdOpt_NoFChMod,
227	kCmdOpt_FUtimes,
228	kCmdOpt_NoFUtimes,
229	kCmdOpt_Stat,
230	kCmdOpt_NoStat,
231	kCmdOpt_ChMod,
232	kCmdOpt_NoChMod,
233	kCmdOpt_Utimes,
234	kCmdOpt_NoUtimes,
235	kCmdOpt_Rename,
236	kCmdOpt_NoRename,
237	kCmdOpt_DirEnum,
238	kCmdOpt_NoDirEnum,
239	kCmdOpt_MkRmDir,
240	kCmdOpt_NoMkRmDir,
241	kCmdOpt_StatVfs,
242	kCmdOpt_NoStatVfs,
243	kCmdOpt_Rm,
244	kCmdOpt_NoRm,
245	kCmdOpt_ChSize,
246	kCmdOpt_NoChSize,
247	kCmdOpt_Read,
248	kCmdOpt_NoRead,
249	kCmdOpt_Write,
250	kCmdOpt_NoWrite,
251	kCmdOpt_Seek,
252	kCmdOpt_NoSeek,
253	kCmdOpt_FSync,
254	kCmdOpt_NoFSync,
255	kCmdOpt_MMap,
256	kCmdOpt_NoMMap,
257
258	kCmdOpt_End
259	};
260
261
262	/*********************************************************************************************************************************
263	* Global Variables *
264	*********************************************************************************************************************************/
265	/** Command line parameters */
266	static const RTGETOPTDEF g_aCmdOptions[] =
267	{
268	{ "--dir", 'd', RTGETOPT_REQ_STRING },
269	{ "--seconds", 's', RTGETOPT_REQ_UINT32 },
270	{ "--milliseconds", 'm', RTGETOPT_REQ_UINT64 },
271
272	{ "--enable-all", 'e', RTGETOPT_REQ_NOTHING },
273	{ "--disable-all", 'z', RTGETOPT_REQ_NOTHING },
274
275	{ "--many-files", kCmdOpt_ManyFiles, RTGETOPT_REQ_NOTHING },
276	{ "--no-many-files", kCmdOpt_NoManyFiles, RTGETOPT_REQ_NOTHING },
277
278	{ "--open", kCmdOpt_Open, RTGETOPT_REQ_NOTHING },
279	{ "--no-open", kCmdOpt_NoOpen, RTGETOPT_REQ_NOTHING },
280	{ "--fstat", kCmdOpt_FStat, RTGETOPT_REQ_NOTHING },
281	{ "--no-fstat", kCmdOpt_NoFStat, RTGETOPT_REQ_NOTHING },
282	{ "--fchmod", kCmdOpt_FChMod, RTGETOPT_REQ_NOTHING },
283	{ "--no-fchmod", kCmdOpt_NoFChMod, RTGETOPT_REQ_NOTHING },
284	{ "--futimes", kCmdOpt_FUtimes, RTGETOPT_REQ_NOTHING },
285	{ "--no-futimes", kCmdOpt_NoFUtimes, RTGETOPT_REQ_NOTHING },
286	{ "--stat", kCmdOpt_Stat, RTGETOPT_REQ_NOTHING },
287	{ "--no-stat", kCmdOpt_NoStat, RTGETOPT_REQ_NOTHING },
288	{ "--chmod", kCmdOpt_ChMod, RTGETOPT_REQ_NOTHING },
289	{ "--no-chmod", kCmdOpt_NoChMod, RTGETOPT_REQ_NOTHING },
290	{ "--utimes", kCmdOpt_Utimes, RTGETOPT_REQ_NOTHING },
291	{ "--no-utimes", kCmdOpt_NoUtimes, RTGETOPT_REQ_NOTHING },
292	{ "--rename", kCmdOpt_Rename, RTGETOPT_REQ_NOTHING },
293	{ "--no-rename", kCmdOpt_NoRename, RTGETOPT_REQ_NOTHING },
294	{ "--dir-enum", kCmdOpt_DirEnum, RTGETOPT_REQ_NOTHING },
295	{ "--no-dir-enum", kCmdOpt_NoDirEnum, RTGETOPT_REQ_NOTHING },
296	{ "--mk-rm-dir", kCmdOpt_MkRmDir, RTGETOPT_REQ_NOTHING },
297	{ "--no-mk-rm-dir", kCmdOpt_NoMkRmDir, RTGETOPT_REQ_NOTHING },
298	{ "--stat-vfs", kCmdOpt_StatVfs, RTGETOPT_REQ_NOTHING },
299	{ "--no-stat-vfs", kCmdOpt_NoStatVfs, RTGETOPT_REQ_NOTHING },
300	{ "--rm", kCmdOpt_Rm, RTGETOPT_REQ_NOTHING },
301	{ "--no-rm", kCmdOpt_NoRm, RTGETOPT_REQ_NOTHING },
302	{ "--chsize", kCmdOpt_ChSize, RTGETOPT_REQ_NOTHING },
303	{ "--no-chsize", kCmdOpt_NoChSize, RTGETOPT_REQ_NOTHING },
304	{ "--read", kCmdOpt_Read, RTGETOPT_REQ_NOTHING },
305	{ "--no-read", kCmdOpt_NoRead, RTGETOPT_REQ_NOTHING },
306	{ "--write", kCmdOpt_Write, RTGETOPT_REQ_NOTHING },
307	{ "--no-write", kCmdOpt_NoWrite, RTGETOPT_REQ_NOTHING },
308	{ "--seek", kCmdOpt_Seek, RTGETOPT_REQ_NOTHING },
309	{ "--no-seek", kCmdOpt_NoSeek, RTGETOPT_REQ_NOTHING },
310	{ "--fsync", kCmdOpt_FSync, RTGETOPT_REQ_NOTHING },
311	{ "--no-fsync", kCmdOpt_NoFSync, RTGETOPT_REQ_NOTHING },
312	{ "--mmap", kCmdOpt_MMap, RTGETOPT_REQ_NOTHING },
313	{ "--no-mmap", kCmdOpt_NoMMap, RTGETOPT_REQ_NOTHING },
314
315	{ "--quiet", 'q', RTGETOPT_REQ_NOTHING },
316	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
317	{ "--version", 'V', RTGETOPT_REQ_NOTHING },
318	{ "--help", 'h', RTGETOPT_REQ_NOTHING } /* for Usage() */
319	};
320
321	/** The test handle. */
322	static RTTEST g_hTest;
323	/** The number of nanoseconds a RTTimeNanoTS call takes.
324	* This is used for adjusting loop count estimates. */
325	static uint64_t g_nsPerNanoTSCall = 1;
326	/** Whether or not to display the duration of each profile run.
327	* This is chiefly for verify the estimate phase. */
328	static bool g_fShowDuration = true;
329	/** Verbosity level. */
330	static uint32_t g_uVerbosity = 0;
331
332	/** @name Selected subtest
333	* @{ */
334	static bool g_fManyFiles = true;
335	static bool g_fOpen = true;
336	static bool g_fFStat = true;
337	static bool g_fFChMod = true;
338	static bool g_fFUtimes = true;
339	static bool g_fStat = true;
340	static bool g_fChMod = true;
341	static bool g_fUtimes = true;
342	static bool g_fRename = true;
343	static bool g_fDirEnum = true;
344	static bool g_fMkRmDir = true;
345	static bool g_fStatVfs = true;
346	static bool g_fRm = true;
347	static bool g_fChSize = true;
348	static bool g_fRead = true;
349	static bool g_fWrite = true;
350	static bool g_fSeek = true;
351	static bool g_fFSync = true;
352	static bool g_fMMap = true;
353	/** @} */
354
355	/** The length of each test run. */
356	static uint64_t g_nsTestRun = RT_NS_1SEC_64 * 10;
357
358	/** For the 'manyfiles' subdir. */
359	static uint32_t g_cManyFiles = 10000;
360
361	/** Number of files in the 'manytree' directory tree. */
362	static uint32_t g_cManyTreeFiles = 640 + 16640 /10880*/;
363	/** Number of files per directory in the 'manytree' construct. */
364	static uint32_t g_cManyTreeFilesPerDir = 640;
365	/* Number of subdirs per directory in the 'manytree' construct. */
366	static uint32_t g_cManyTreeSubdirsPerDir = 16;
367	/** The depth of the 'manytree' directory tree. */
368	static uint32_t g_cManyTreeDepth = 1;
369	/** List of directories in the many tree, creation order. */
370	static RTLISTANCHOR g_ManyTreeHead;
371
372	/** Number of configured I/O block sizes. */
373	static uint32_t g_cIoBlocks = 8;
374	/** Configured I/O block sizes. */
375	static uint32_t g_acbIoBlocks[16] = { 1, 512, 4096, 16384, 65536, _1M, _32M, _128M };
376	/** The desired size of the test file we use for I/O. */
377	static uint64_t g_cbIoFile = _512M;
378
379	/** The length of g_szDir. */
380	static size_t g_cchDir;
381	/** The length of g_szEmptyDir. */
382	static size_t g_cchEmptyDir;
383	/** The length of g_szDeepDir. */
384	static size_t g_cchDeepDir;
385
386	/** The test directory (absolute). This will always have a trailing slash. */
387	static char g_szDir[RTPATH_MAX];
388	/** The empty test directory (absolute). This will always have a trailing slash. */
389	static char g_szEmptyDir[RTPATH_MAX];
390	/** The deep test directory (absolute). This will always have a trailing slash. */
391	static char g_szDeepDir[RTPATH_MAX];
392
393
394	/**
395	* Yield the CPU and stuff before starting a test run.
396	*/
397	DECLINLINE(void) fsPerfYield(void)
398	{
399	RTThreadYield();
400	RTThreadYield();
401	}
402
403
404	/**
405	* Profiles the RTTimeNanoTS call, setting g_nsPerNanoTSCall.
406	*/
407	static void fsPerfNanoTS(void)
408	{
409	fsPerfYield();
410
411	/* Make sure we start off on a changing timestamp on platforms will low time resoultion. */
412	uint64_t nsStart = RTTimeNanoTS();
413	uint64_t ns;
414	do
415	ns = RTTimeNanoTS();
416	while (ns == nsStart);
417	nsStart = ns;
418
419	/* Call it for 10 ms. */
420	uint32_t i = 0;
421	do
422	{
423	i++;
424	ns = RTTimeNanoTS();
425	}
426	while (ns - nsStart < RT_NS_10MS);
427
428	g_nsPerNanoTSCall = (ns - nsStart) / i;
429	}
430
431
432	/**
433	* Construct a path relative to the base test directory.
434	*
435	* @returns g_szDir.
436	* @param pszAppend What to append.
437	* @param cchAppend How much to append.
438	*/
439	DECLINLINE(char ) InDir(const char pszAppend, size_t cchAppend)
440	{
441	Assert(g_szDir[g_cchDir - 1] == RTPATH_SLASH);
442	memcpy(&g_szDir[g_cchDir], pszAppend, cchAppend);
443	g_szDir[g_cchDir + cchAppend] = '\0';
444	return &g_szDir[0];
445	}
446
447
448	/**
449	* Construct a path relative to the empty directory.
450	*
451	* @returns g_szEmptyDir.
452	* @param pszAppend What to append.
453	* @param cchAppend How much to append.
454	*/
455	DECLINLINE(char ) InEmptyDir(const char pszAppend, size_t cchAppend)
456	{
457	Assert(g_szEmptyDir[g_cchEmptyDir - 1] == RTPATH_SLASH);
458	memcpy(&g_szEmptyDir[g_cchEmptyDir], pszAppend, cchAppend);
459	g_szEmptyDir[g_cchEmptyDir + cchAppend] = '\0';
460	return &g_szEmptyDir[0];
461	}
462
463
464	/**
465	* Construct a path relative to the deep test directory.
466	*
467	* @returns g_szDeepDir.
468	* @param pszAppend What to append.
469	* @param cchAppend How much to append.
470	*/
471	DECLINLINE(char ) InDeepDir(const char pszAppend, size_t cchAppend)
472	{
473	Assert(g_szDeepDir[g_cchDeepDir - 1] == RTPATH_SLASH);
474	memcpy(&g_szDeepDir[g_cchDeepDir], pszAppend, cchAppend);
475	g_szDeepDir[g_cchDeepDir + cchAppend] = '\0';
476	return &g_szDeepDir[0];
477	}
478
479
480	/**
481	* Prepares the test area.
482	* @returns VBox status code.
483	*/
484	static int fsPrepTestArea(void)
485	{
486	/* The empty subdir and associated globals: */
487	static char s_szEmpty[] = "empty";
488	memcpy(g_szEmptyDir, g_szDir, g_cchDir);
489	memcpy(&g_szEmptyDir[g_cchDir], s_szEmpty, sizeof(s_szEmpty));
490	g_cchEmptyDir = g_cchDir + sizeof(s_szEmpty) - 1;
491	RTTESTI_CHECK_RC_RET(RTDirCreate(g_szEmptyDir, 0755, 0), VINF_SUCCESS, rcCheck);
492	g_szEmptyDir[g_cchEmptyDir++] = RTPATH_SLASH;
493	g_szEmptyDir[g_cchEmptyDir] = '\0';
494	RTTestIPrintf(RTTESTLVL_ALWAYS, "Empty dir: %s\n", g_szEmptyDir);
495
496	/* Deep directory: */
497	memcpy(g_szDeepDir, g_szDir, g_cchDir);
498	g_cchDeepDir = g_cchDir;
499	do
500	{
501	static char const s_szSub[] = "d" RTPATH_SLASH_STR;
502	memcpy(&g_szDeepDir[g_cchDeepDir], s_szSub, sizeof(s_szSub));
503	g_cchDeepDir += sizeof(s_szSub) - 1;
504	RTTESTI_CHECK_RC_RET( RTDirCreate(g_szDeepDir, 0755, 0), VINF_SUCCESS, rcCheck);
505	} while (g_cchDeepDir < 176);
506	RTTestIPrintf(RTTESTLVL_ALWAYS, "Deep dir: %s\n", g_szDeepDir);
507
508	/* Create known file in both deep and shallow dirs: */
509	RTFILE hKnownFile;
510	RTTESTI_CHECK_RC_RET(RTFileOpen(&hKnownFile, InDir(RT_STR_TUPLE("known-file")),
511	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE),
512	VINF_SUCCESS, rcCheck);
513	RTTESTI_CHECK_RC_RET(RTFileClose(hKnownFile), VINF_SUCCESS, rcCheck);
514
515	RTTESTI_CHECK_RC_RET(RTFileOpen(&hKnownFile, InDeepDir(RT_STR_TUPLE("known-file")),
516	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE),
517	VINF_SUCCESS, rcCheck);
518	RTTESTI_CHECK_RC_RET(RTFileClose(hKnownFile), VINF_SUCCESS, rcCheck);
519
520	return VINF_SUCCESS;
521	}
522
523
524	/**
525	* Create a name list entry.
526	* @returns Pointer to the entry, NULL if out of memory.
527	* @param pchName The name.
528	* @param cchName The name length.
529	*/
530	PFSPERFNAMEENTRY fsPerfCreateNameEntry(const char *pchName, size_t cchName)
531	{
532	PFSPERFNAMEENTRY pEntry = (PFSPERFNAMEENTRY)RTMemAllocVar(RT_UOFFSETOF_DYN(FSPERFNAMEENTRY, szName[cchName + 1]));
533	if (pEntry)
534	{
535	RTListInit(&pEntry->Entry);
536	pEntry->cchName = (uint16_t)cchName;
537	memcpy(pEntry->szName, pchName, cchName);
538	pEntry->szName[cchName] = '\0';
539	}
540	return pEntry;
541	}
542
543
544	static int fsPerfManyTreeRecursiveDirCreator(size_t cchDir, uint32_t iDepth)
545	{
546	PFSPERFNAMEENTRY pEntry = fsPerfCreateNameEntry(g_szDir, cchDir);
547	RTTESTI_CHECK_RET(pEntry, VERR_NO_MEMORY);
548	RTListAppend(&g_ManyTreeHead, &pEntry->Entry);
549
550	RTTESTI_CHECK_RC_RET(RTDirCreate(g_szDir, 0755, RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL),
551	VINF_SUCCESS, rcCheck);
552
553	if (iDepth < g_cManyTreeDepth)
554	for (uint32_t i = 0; i < g_cManyTreeSubdirsPerDir; i++)
555	{
556	size_t cchSubDir = RTStrPrintf(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, "d%02u" RTPATH_SLASH_STR, i);
557	RTTESTI_CHECK_RC_RET(fsPerfManyTreeRecursiveDirCreator(cchDir + cchSubDir, iDepth + 1), VINF_SUCCESS, rcCheck);
558	}
559
560	return VINF_SUCCESS;
561	}
562
563
564	void fsPerfManyFiles(void)
565	{
566	RTTestISub("manyfiles");
567
568	/*
569	* Create a sub-directory with like 10000 files in it.
570	*
571	* This does push the directory organization of the underlying file system,
572	* which is something we might not want to profile with shared folders. It
573	* is however useful for directory enumeration.
574	*/
575	RTTESTI_CHECK_RC_RETV(RTDirCreate(InDir(RT_STR_TUPLE("manyfiles")), 0755,
576	RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL),
577	VINF_SUCCESS);
578
579	size_t offFilename = strlen(g_szDir);
580	g_szDir[offFilename++] = RTPATH_SLASH;
581
582	fsPerfYield();
583	RTFILE hFile;
584	uint64_t const nsStart = RTTimeNanoTS();
585	for (uint32_t i = 0; i < g_cManyFiles; i++)
586	{
587	RTStrFormatU32(&g_szDir[offFilename], sizeof(g_szDir) - offFilename, i, 10, 5, 5, RTSTR_F_ZEROPAD);
588	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile, g_szDir, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
589	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
590	}
591	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
592	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Creating %u empty files in single directory", g_cManyFiles);
593	RTTestIValueF(cNsElapsed / g_cManyFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Create empty file (single dir)");
594
595	/*
596	* Create a bunch of directories with exacly 32 files in each, hoping to
597	* avoid any directory organization artifacts.
598	*/
599	/* Create the directories first, building a list of them for simplifying iteration: */
600	RTListInit(&g_ManyTreeHead);
601	InDir(RT_STR_TUPLE("manytree" RTPATH_SLASH_STR));
602	RTTESTI_CHECK_RC_RETV(fsPerfManyTreeRecursiveDirCreator(strlen(g_szDir), 0), VINF_SUCCESS);
603
604	/* Create the zero byte files: */
605	fsPerfYield();
606	uint64_t const nsStart2 = RTTimeNanoTS();
607	uint32_t cFiles = 0;
608	PFSPERFNAMEENTRY pCur;
609	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry)
610	{
611	char szPath[RTPATH_MAX];
612	memcpy(szPath, pCur->szName, pCur->cchName);
613	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++)
614	{
615	RTStrFormatU32(&szPath[pCur->cchName], sizeof(szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD);
616	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile, szPath, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
617	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
618	cFiles++;
619	}
620	}
621	uint64_t const cNsElapsed2 = RTTimeNanoTS() - nsStart2;
622	RTTestIValueF(cNsElapsed2, RTTESTUNIT_NS, "Creating %u empty files in tree", cFiles);
623	RTTestIValueF(cNsElapsed2 / cFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Create empty file (tree)");
624	RTTESTI_CHECK(g_cManyTreeFiles == cFiles);
625	}
626
627
628	DECL_FORCE_INLINE(int) fsPerfOpenExistingOnceReadonly(const char *pszFile)
629	{
630	RTFILE hFile;
631	RTTESTI_CHECK_RC_RET(RTFileOpen(&hFile, pszFile, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS, rcCheck);
632	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
633	return VINF_SUCCESS;
634	}
635
636
637	DECL_FORCE_INLINE(int) fsPerfOpenExistingOnceWriteonly(const char *pszFile)
638	{
639	RTFILE hFile;
640	RTTESTI_CHECK_RC_RET(RTFileOpen(&hFile, pszFile, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS, rcCheck);
641	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
642	return VINF_SUCCESS;
643	}
644
645
646	void fsPerfOpen(void)
647	{
648	RTTestISub("open");
649
650	/* Opening non-existing files. */
651	RTFILE hFile;
652	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InEmptyDir(RT_STR_TUPLE("no-such-file")),
653	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VERR_FILE_NOT_FOUND);
654	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
655	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), FSPERF_VERR_PATH_NOT_FOUND);
656	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
657	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VERR_PATH_NOT_FOUND);
658
659	/*
660	* Create file1 and then try exclusivly creating it again.
661	* Then profile opening it for reading.
662	*/
663	RTFILE hFile1;
664	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file1")),
665	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
666	RTTESTI_CHECK_RC(RTFileOpen(&hFile, g_szDir, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VERR_ALREADY_EXISTS);
667	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
668
669	PROFILE_FN(fsPerfOpenExistingOnceReadonly(g_szDir), g_nsTestRun, "RTFileOpen/Close/Readonly");
670	PROFILE_FN(fsPerfOpenExistingOnceWriteonly(g_szDir), g_nsTestRun, "RTFileOpen/Close/Writeonly");
671
672	/*
673	* Profile opening in the deep directory too.
674	*/
675	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file1")),
676	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
677	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
678	PROFILE_FN(fsPerfOpenExistingOnceReadonly(g_szDeepDir), g_nsTestRun, "RTFileOpen/Close/deep/readonly");
679	PROFILE_FN(fsPerfOpenExistingOnceWriteonly(g_szDeepDir), g_nsTestRun, "RTFileOpen/Close/deep/writeonly");
680
681	/* Manytree: */
682	char szPath[RTPATH_MAX];
683	PROFILE_MANYTREE_FN(szPath, fsPerfOpenExistingOnceReadonly(szPath), 1, g_nsTestRun, "RTFileOpen/Close/manytree/readonly");
684	}
685
686
687	void fsPerfFStat(void)
688	{
689	RTTestISub("fstat");
690	RTFILE hFile1;
691	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file2")),
692	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
693	RTFSOBJINFO ObjInfo = {0};
694	PROFILE_FN(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_NOTHING), g_nsTestRun, "RTFileQueryInfo/NOTHING");
695	PROFILE_FN(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_UNIX), g_nsTestRun, "RTFileQueryInfo/UNIX");
696
697	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
698	}
699
700
701	void fsPerfFChMod(void)
702	{
703	RTTestISub("fchmod");
704	RTFILE hFile1;
705	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file4")),
706	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
707	RTFSOBJINFO ObjInfo = {0};
708	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
709	RTFMODE const fEvenMode = (ObjInfo.Attr.fMode & ~RTFS_UNIX_ALL_ACCESS_PERMS) \| RTFS_DOS_READONLY \| 0400;
710	RTFMODE const fOddMode = (ObjInfo.Attr.fMode & ~(RTFS_UNIX_ALL_ACCESS_PERMS \| RTFS_DOS_READONLY)) \| 0640;
711	PROFILE_FN(RTFileSetMode(hFile1, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTFileSetMode");
712
713	RTFileSetMode(hFile1, ObjInfo.Attr.fMode);
714	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
715	}
716
717
718	void fsPerfFUtimes(void)
719	{
720	RTTestISub("futimes");
721	RTFILE hFile1;
722	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file5")),
723	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
724	RTTIMESPEC Time1;
725	RTTimeNow(&Time1);
726	RTTIMESPEC Time2 = Time1;
727	RTTimeSpecSubSeconds(&Time2, 3636);
728
729	RTFSOBJINFO ObjInfo0 = {0};
730	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo0, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
731
732	/* Modify modification time: */
733	RTTESTI_CHECK_RC(RTFileSetTimes(hFile1, NULL, &Time2, NULL, NULL), VINF_SUCCESS);
734	RTFSOBJINFO ObjInfo1 = {0};
735	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo1, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
736	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo1.ModificationTime) >> 2) == (RTTimeSpecGetSeconds(&Time2) >> 2));
737	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo1.AccessTime) == RTTimeSpecGetNano(&ObjInfo0.AccessTime));
738
739	/* Modify access time: */
740	RTTESTI_CHECK_RC(RTFileSetTimes(hFile1, &Time1, NULL, NULL, NULL), VINF_SUCCESS);
741	RTFSOBJINFO ObjInfo2 = {0};
742	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo2, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
743	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo2.AccessTime) >> 2) == (RTTimeSpecGetSeconds(&Time1) >> 2));
744	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo2.ModificationTime) == RTTimeSpecGetNano(&ObjInfo1.ModificationTime));
745
746	/* Benchmark it: */
747	PROFILE_FN(RTFileSetTimes(hFile1, NULL, iIteration & 1 ? &Time1 : &Time2, NULL, NULL), g_nsTestRun, "RTFileSetTimes");
748
749	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
750	}
751
752
753	void fsPerfStat(void)
754	{
755	RTTestISub("stat");
756	RTFSOBJINFO ObjInfo;
757
758	/* Non-existing files. */
759	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InEmptyDir(RT_STR_TUPLE("no-such-file")),
760	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VERR_FILE_NOT_FOUND);
761	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
762	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), FSPERF_VERR_PATH_NOT_FOUND);
763	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
764	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VERR_PATH_NOT_FOUND);
765
766	/* Shallow: */
767	RTFILE hFile1;
768	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file3")),
769	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
770	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
771
772	PROFILE_FN(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), g_nsTestRun,
773	"RTPathQueryInfoEx/NOTHING");
774	PROFILE_FN(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK), g_nsTestRun,
775	"RTPathQueryInfoEx/UNIX");
776
777
778	/* Deep: */
779	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file3")),
780	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
781	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
782
783	PROFILE_FN(RTPathQueryInfoEx(g_szDeepDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), g_nsTestRun,
784	"RTPathQueryInfoEx/deep/NOTHING");
785	PROFILE_FN(RTPathQueryInfoEx(g_szDeepDir, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK), g_nsTestRun,
786	"RTPathQueryInfoEx/deep/UNIX");
787
788	/* Manytree: */
789	char szPath[RTPATH_MAX];
790	PROFILE_MANYTREE_FN(szPath, RTPathQueryInfoEx(szPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK),
791	1, g_nsTestRun, "RTPathQueryInfoEx/manytree/NOTHING");
792	PROFILE_MANYTREE_FN(szPath, RTPathQueryInfoEx(szPath, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK),
793	1, g_nsTestRun, "RTPathQueryInfoEx/manytree/UNIX");
794	}
795
796
797	void fsPerfChmod(void)
798	{
799	RTTestISub("chmod");
800
801	/* Non-existing files. */
802	RTTESTI_CHECK_RC(RTPathSetMode(InEmptyDir(RT_STR_TUPLE("no-such-file")), 0665),
803	VERR_FILE_NOT_FOUND);
804	RTTESTI_CHECK_RC(RTPathSetMode(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), 0665),
805	FSPERF_VERR_PATH_NOT_FOUND);
806	RTTESTI_CHECK_RC(RTPathSetMode(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), 0665), VERR_PATH_NOT_FOUND);
807
808	/* Shallow: */
809	RTFILE hFile1;
810	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file14")),
811	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
812	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
813
814	RTFSOBJINFO ObjInfo;
815	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
816	RTFMODE const fEvenMode = (ObjInfo.Attr.fMode & ~RTFS_UNIX_ALL_ACCESS_PERMS) \| RTFS_DOS_READONLY \| 0400;
817	RTFMODE const fOddMode = (ObjInfo.Attr.fMode & ~(RTFS_UNIX_ALL_ACCESS_PERMS \| RTFS_DOS_READONLY)) \| 0640;
818	PROFILE_FN(RTPathSetMode(g_szDir, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTPathSetMode");
819	RTPathSetMode(g_szDir, ObjInfo.Attr.fMode);
820
821	/* Deep: */
822	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file14")),
823	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
824	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
825
826	PROFILE_FN(RTPathSetMode(g_szDeepDir, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTPathSetMode/deep");
827	RTPathSetMode(g_szDeepDir, ObjInfo.Attr.fMode);
828
829	/* Manytree: */
830	char szPath[RTPATH_MAX];
831	PROFILE_MANYTREE_FN(szPath, RTPathSetMode(szPath, iIteration & 1 ? fOddMode : fEvenMode), 1, g_nsTestRun,
832	"RTPathSetMode/manytree");
833	DO_MANYTREE_FN(szPath, RTPathSetMode(szPath, ObjInfo.Attr.fMode));
834	}
835
836
837	void fsPerfUtimes(void)
838	{
839	RTTestISub("utimes");
840
841	RTTIMESPEC Time1;
842	RTTimeNow(&Time1);
843	RTTIMESPEC Time2 = Time1;
844	RTTimeSpecSubSeconds(&Time2, 3636);
845
846	/* Non-existing files. */
847	RTTESTI_CHECK_RC(RTPathSetTimesEx(InEmptyDir(RT_STR_TUPLE("no-such-file")), NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
848	VERR_FILE_NOT_FOUND);
849	RTTESTI_CHECK_RC(RTPathSetTimesEx(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
850	NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
851	FSPERF_VERR_PATH_NOT_FOUND);
852	RTTESTI_CHECK_RC(RTPathSetTimesEx(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
853	NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
854	VERR_PATH_NOT_FOUND);
855
856	/* Shallow: */
857	RTFILE hFile1;
858	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file15")),
859	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
860	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
861
862	RTFSOBJINFO ObjInfo0 = {0};
863	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo0, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
864
865	/* Modify modification time: */
866	RTTESTI_CHECK_RC(RTPathSetTimesEx(g_szDir, NULL, &Time2, NULL, NULL, RTPATH_F_ON_LINK), VINF_SUCCESS);
867	RTFSOBJINFO ObjInfo1;
868	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo1, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
869	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo1.ModificationTime) >> 2) == (RTTimeSpecGetSeconds(&Time2) >> 2));
870	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo1.AccessTime) == RTTimeSpecGetNano(&ObjInfo0.AccessTime));
871
872	/* Modify access time: */
873	RTTESTI_CHECK_RC(RTPathSetTimesEx(g_szDir, &Time1, NULL, NULL, NULL, RTPATH_F_ON_LINK), VINF_SUCCESS);
874	RTFSOBJINFO ObjInfo2 = {0};
875	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo2, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
876	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo2.AccessTime) >> 2) == (RTTimeSpecGetSeconds(&Time1) >> 2));
877	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo2.ModificationTime) == RTTimeSpecGetNano(&ObjInfo1.ModificationTime));
878
879	/* Profile shallow: */
880	PROFILE_FN(RTPathSetTimesEx(g_szDir, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
881	NULL, NULL, RTPATH_F_ON_LINK),
882	g_nsTestRun, "RTPathSetTimesEx");
883
884	/* Deep: */
885	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file15")),
886	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
887	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
888
889	PROFILE_FN(RTPathSetTimesEx(g_szDeepDir, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
890	NULL, NULL, RTPATH_F_ON_LINK),
891	g_nsTestRun, "RTPathSetTimesEx/deep");
892
893	/* Manytree: */
894	char szPath[RTPATH_MAX];
895	PROFILE_MANYTREE_FN(szPath, RTPathSetTimesEx(szPath, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
896	NULL, NULL, RTPATH_F_ON_LINK),
897	1, g_nsTestRun, "RTPathSetTimesEx/manytree");
898	}
899
900
901	DECL_FORCE_INLINE(int) fsPerfRenameMany(const char *pszFile, uint32_t iIteration)
902	{
903	char szRenamed[RTPATH_MAX];
904	strcat(strcpy(szRenamed, pszFile), "-renamed");
905	if (!(iIteration & 1))
906	return RTPathRename(pszFile, szRenamed, 0);
907	return RTPathRename(szRenamed, pszFile, 0);
908	}
909
910
911	void fsPerfRename(void)
912	{
913	RTTestISub("rename");
914	char szPath[RTPATH_MAX];
915
916	/* Non-existing files. */
917	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("other-no-such-file")));
918	RTTESTI_CHECK_RC(RTPathRename(InEmptyDir(RT_STR_TUPLE("no-such-file")), szPath, 0), VERR_FILE_NOT_FOUND);
919	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "other-no-such-file")));
920	RTTESTI_CHECK_RC(RTPathRename(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), szPath, 0),
921	FSPERF_VERR_PATH_NOT_FOUND);
922	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("other-no-such-file")));
923	RTTESTI_CHECK_RC(RTPathRename(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), szPath, 0), VERR_PATH_NOT_FOUND);
924
925	RTFILE hFile1;
926	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file16")),
927	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
928	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
929	strcat(strcpy(szPath, g_szDir), "-no-such-dir" RTPATH_SLASH_STR "file16");
930	RTTESTI_CHECK_RC(RTPathRename(szPath, g_szDir, 0), FSPERF_VERR_PATH_NOT_FOUND);
931	RTTESTI_CHECK_RC(RTPathRename(g_szDir, szPath, 0), FSPERF_VERR_PATH_NOT_FOUND);
932
933	/* Shallow: */
934	strcat(strcpy(szPath, g_szDir), "-other");
935	PROFILE_FN(RTPathRename(iIteration & 1 ? szPath : g_szDir, iIteration & 1 ? g_szDir : szPath, 0), g_nsTestRun, "RTPathRename");
936
937	/* Deep: */
938	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file15")),
939	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
940	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
941
942	strcat(strcpy(szPath, g_szDeepDir), "-other");
943	PROFILE_FN(RTPathRename(iIteration & 1 ? szPath : g_szDeepDir, iIteration & 1 ? g_szDeepDir : szPath, 0),
944	g_nsTestRun, "RTPathRename/deep");
945
946	/* Manytree: */
947	PROFILE_MANYTREE_FN(szPath, fsPerfRenameMany(szPath, iIteration), 2, g_nsTestRun, "RTPathRename/manytree");
948	}
949
950
951	DECL_FORCE_INLINE(int) fsPerfEnumEmpty(void)
952	{
953	RTDIR hDir;
954	g_szEmptyDir[g_cchEmptyDir] = '\0';
955	RTTESTI_CHECK_RC_RET(RTDirOpen(&hDir, g_szEmptyDir), VINF_SUCCESS, rcCheck);
956
957	RTDIRENTRY Entry;
958	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
959	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
960	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
961
962	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
963	return VINF_SUCCESS;
964	}
965
966
967	DECL_FORCE_INLINE(int) fsPerfEnumManyFiles(void)
968	{
969	RTDIR hDir;
970	RTTESTI_CHECK_RC_RET(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("manyfiles"))), VINF_SUCCESS, rcCheck);
971	uint32_t cLeft = g_cManyFiles + 2;
972	for (;;)
973	{
974	RTDIRENTRY Entry;
975	if (cLeft > 0)
976	RTTESTI_CHECK_RC_BREAK(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
977	else
978	{
979	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
980	break;
981	}
982	cLeft--;
983	}
984	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
985	return VINF_SUCCESS;
986	}
987
988
989	void vsPerfDirEnum(void)
990	{
991	RTTestISub("dir enum");
992	RTDIR hDir;
993
994	/* Non-existing files. */
995	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InEmptyDir(RT_STR_TUPLE("no-such-file"))), VERR_FILE_NOT_FOUND);
996	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
997	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
998
999	/*
1000	* The empty directory.
1001	*/
1002	g_szEmptyDir[g_cchEmptyDir] = '\0';
1003	RTTESTI_CHECK_RC_RETV(RTDirOpen(&hDir, g_szEmptyDir), VINF_SUCCESS);
1004
1005	uint32_t fDots = 0;
1006	RTDIRENTRY Entry;
1007	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1008	RTTESTI_CHECK(RTDirEntryIsStdDotLink(&Entry));
1009	fDots \|= RT_BIT_32(Entry.cbName - 1);
1010
1011	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1012	RTTESTI_CHECK(RTDirEntryIsStdDotLink(&Entry));
1013	fDots \|= RT_BIT_32(Entry.cbName - 1);
1014	RTTESTI_CHECK(fDots == 3);
1015
1016	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
1017
1018	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1019
1020	/*
1021	* The directory with many files in it.
1022	*/
1023	if (g_fManyFiles)
1024	{
1025	fDots = 0;
1026	uint32_t const cBitmap = RT_ALIGN_32(g_cManyFiles, 64);
1027	void *pvBitmap = alloca(cBitmap / 8);
1028	RT_BZERO(pvBitmap, cBitmap / 8);
1029	for (uint32_t i = g_cManyFiles; i < cBitmap; i++)
1030	ASMBitSet(pvBitmap, i);
1031
1032	uint32_t cFiles = 0;
1033	RTTESTI_CHECK_RC_RETV(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("manyfiles"))), VINF_SUCCESS);
1034	for (;;)
1035	{
1036	int rc = RTDirRead(hDir, &Entry, NULL);
1037	if (rc == VINF_SUCCESS)
1038	{
1039	if (Entry.szName[0] == '.')
1040	{
1041	if (Entry.szName[1] == '.')
1042	{
1043	RTTESTI_CHECK(!(fDots & 2));
1044	fDots \|= 2;
1045	}
1046	else
1047	{
1048	RTTESTI_CHECK(Entry.szName[1] == '\0');
1049	RTTESTI_CHECK(!(fDots & 1));
1050	fDots \|= 1;
1051	}
1052	}
1053	else
1054	{
1055	uint32_t iFile = UINT32_MAX;
1056	RTTESTI_CHECK_RC(RTStrToUInt32Full(Entry.szName, 10, &iFile), VINF_SUCCESS);
1057	if ( iFile < g_cManyFiles
1058	&& !ASMBitTest(pvBitmap, iFile))
1059	{
1060	ASMBitSet(pvBitmap, iFile);
1061	cFiles++;
1062	}
1063	else
1064	RTTestFailed(g_hTest, "line %u: iFile=%u g_cManyFiles=%u\n", __LINE__, iFile, g_cManyFiles);
1065	}
1066	}
1067	else if (rc == VERR_NO_MORE_FILES)
1068	break;
1069	else
1070	{
1071	RTTestFailed(g_hTest, "RTDirRead failed enumerating manyfiles: %Rrc\n", rc);
1072	RTDirClose(hDir);
1073	return;
1074	}
1075	}
1076	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1077	RTTESTI_CHECK(fDots == 3);
1078	RTTESTI_CHECK(cFiles == g_cManyFiles);
1079	RTTESTI_CHECK(ASMMemIsAllU8(pvBitmap, cBitmap / 8, 0xff));
1080	}
1081
1082	/*
1083	* Profile.
1084	*/
1085	PROFILE_FN(fsPerfEnumEmpty(),g_nsTestRun, "RTDirOpen/Read/Close empty");
1086	if (g_fManyFiles)
1087	PROFILE_FN(fsPerfEnumManyFiles(), g_nsTestRun, "RTDirOpen/Read/Close manyfiles");
1088	}
1089
1090
1091	void fsPerfMkRmDir(void)
1092	{
1093	RTTestISub("mkdir/rmdir");
1094
1095	/* Non-existing directories: */
1096	RTTESTI_CHECK_RC(RTDirRemove(InEmptyDir(RT_STR_TUPLE("no-such-dir"))), VERR_FILE_NOT_FOUND);
1097	RTTESTI_CHECK_RC(RTDirRemove(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
1098	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
1099	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), 0755, 0), FSPERF_VERR_PATH_NOT_FOUND);
1100	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), 0755, 0), VERR_PATH_NOT_FOUND);
1101
1102	/** @todo check what happens if non-final path component isn't a directory. unix
1103	* should return ENOTDIR and IPRT translates that to VERR_PATH_NOT_FOUND.
1104	* Curious what happens on windows. */
1105
1106	/* Already existing directories and files: */
1107	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE(".")), 0755, 0), VERR_ALREADY_EXISTS);
1108	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE("..")), 0755, 0), VERR_ALREADY_EXISTS);
1109
1110	/* Remove directory with subdirectories: */
1111	#if defined(RT_OS_WINDOWS)
1112	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("."))), VERR_DIR_NOT_EMPTY);
1113	#else
1114	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("."))), VERR_INVALID_PARAMETER); /* EINVAL for '.' */
1115	#endif
1116	#if defined(RT_OS_WINDOWS)
1117	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE(".."))), VERR_SHARING_VIOLATION); /* weird */
1118	#else
1119	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE(".."))), VERR_DIR_NOT_EMPTY);
1120	#endif
1121	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE(""))), VERR_DIR_NOT_EMPTY);
1122
1123	/* Create a directory and remove it: */
1124	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("subdir-1")), 0755, 0), VINF_SUCCESS);
1125	RTTESTI_CHECK_RC(RTDirRemove(g_szDir), VINF_SUCCESS);
1126
1127	/* Create a file and try remove it or create a directory with the same name: */
1128	RTFILE hFile1;
1129	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file18")),
1130	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1131	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1132	RTTESTI_CHECK_RC(RTDirRemove(g_szDir), VERR_NOT_A_DIRECTORY);
1133	RTTESTI_CHECK_RC(RTDirCreate(g_szDir, 0755, 0), VERR_ALREADY_EXISTS);
1134	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("file18" RTPATH_SLASH_STR "subdir")), 0755, 0), VERR_PATH_NOT_FOUND);
1135
1136	/*
1137	* Profile alternately creating and removing a bunch of directories.
1138	*/
1139	RTTESTI_CHECK_RC_RETV(RTDirCreate(InDir(RT_STR_TUPLE("subdir-2")), 0755, 0), VINF_SUCCESS);
1140	size_t cchDir = strlen(g_szDir);
1141	g_szDir[cchDir++] = RTPATH_SLASH;
1142	g_szDir[cchDir++] = 's';
1143
1144	uint32_t cCreated = 0;
1145	uint64_t nsCreate = 0;
1146	uint64_t nsRemove = 0;
1147	for (;;)
1148	{
1149	/* Create a bunch: */
1150	uint64_t nsStart = RTTimeNanoTS();
1151	for (uint32_t i = 0; i < 998; i++)
1152	{
1153	RTStrFormatU32(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, i, 10, 3, 3, RTSTR_F_ZEROPAD);
1154	RTTESTI_CHECK_RC_RETV(RTDirCreate(g_szDir, 0755, 0), VINF_SUCCESS);
1155	}
1156	nsCreate += RTTimeNanoTS() - nsStart;
1157	cCreated += 998;
1158
1159	/* Remove the bunch: */
1160	nsStart = RTTimeNanoTS();
1161	for (uint32_t i = 0; i < 998; i++)
1162	{
1163	RTStrFormatU32(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, i, 10, 3, 3, RTSTR_F_ZEROPAD);
1164	RTTESTI_CHECK_RC_RETV(RTDirRemove(g_szDir), VINF_SUCCESS);
1165	}
1166	nsRemove = RTTimeNanoTS() - nsStart;
1167
1168	/* Check if we got time for another round: */
1169	if ( ( nsRemove >= g_nsTestRun
1170	&& nsCreate >= g_nsTestRun)
1171	\|\| nsCreate + nsRemove >= g_nsTestRun * 3)
1172	break;
1173	}
1174	RTTestIValue("RTDirCreate", nsCreate / cCreated, RTTESTUNIT_NS_PER_OCCURRENCE);
1175	RTTestIValue("RTDirRemove", nsRemove / cCreated, RTTESTUNIT_NS_PER_OCCURRENCE);
1176	}
1177
1178
1179	void fsPerfStatVfs(void)
1180	{
1181	RTTestISub("statvfs");
1182
1183	g_szEmptyDir[g_cchEmptyDir] = '\0';
1184	RTFOFF cbTotal;
1185	RTFOFF cbFree;
1186	uint32_t cbBlock;
1187	uint32_t cbSector;
1188	RTTESTI_CHECK_RC(RTFsQuerySizes(g_szEmptyDir, &cbTotal, &cbFree, &cbBlock, &cbSector), VINF_SUCCESS);
1189
1190	uint32_t uSerial;
1191	RTTESTI_CHECK_RC(RTFsQuerySerial(g_szEmptyDir, &uSerial), VINF_SUCCESS);
1192
1193	RTFSPROPERTIES Props;
1194	RTTESTI_CHECK_RC(RTFsQueryProperties(g_szEmptyDir, &Props), VINF_SUCCESS);
1195
1196	RTFSTYPE enmType;
1197	RTTESTI_CHECK_RC(RTFsQueryType(g_szEmptyDir, &enmType), VINF_SUCCESS);
1198
1199	}
1200
1201
1202	void fsPerfRm(void)
1203	{
1204	RTTestISub("rm");
1205
1206	/* Non-existing files. */
1207	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("no-such-file"))), VERR_FILE_NOT_FOUND);
1208	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
1209	RTTESTI_CHECK_RC(RTFileDelete(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
1210
1211	/* Directories: */
1212	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("."))), VERR_ACCESS_DENIED);
1213	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(".."))), VERR_ACCESS_DENIED);
1214	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(""))), VERR_ACCESS_DENIED);
1215
1216	/* Shallow: */
1217	RTFILE hFile1;
1218	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file19")),
1219	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1220	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1221	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
1222	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VERR_FILE_NOT_FOUND);
1223
1224	if (g_fManyFiles)
1225	{
1226	/*
1227	* Profile the deletion of the manyfiles content.
1228	*/
1229	{
1230	InDir(RT_STR_TUPLE("manyfiles" RTPATH_SLASH_STR));
1231	size_t const offFilename = strlen(g_szDir);
1232	fsPerfYield();
1233	uint64_t const nsStart = RTTimeNanoTS();
1234	for (uint32_t i = 0; i < g_cManyFiles; i++)
1235	{
1236	RTStrFormatU32(&g_szDir[offFilename], sizeof(g_szDir) - offFilename, i, 10, 5, 5, RTSTR_F_ZEROPAD);
1237	RTTESTI_CHECK_RC_RETV(RTFileDelete(g_szDir), VINF_SUCCESS);
1238	}
1239	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
1240	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Deleted %u empty files from a single directory", g_cManyFiles);
1241	RTTestIValueF(cNsElapsed / g_cManyFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Delete file (single dir)");
1242	}
1243
1244	/*
1245	* Ditto for the manytree.
1246	*/
1247	{
1248	char szPath[RTPATH_MAX];
1249	uint64_t const nsStart = RTTimeNanoTS();
1250	DO_MANYTREE_FN(szPath, RTTESTI_CHECK_RC_RETV(RTFileDelete(szPath), VINF_SUCCESS));
1251	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
1252	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Deleted %u empty files in tree", g_cManyTreeFiles);
1253	RTTestIValueF(cNsElapsed / g_cManyTreeFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Delete file (tree)");
1254	}
1255	}
1256	}
1257
1258
1259	void fsPerfChSize(void)
1260	{
1261	RTTestISub("chsize");
1262
1263	/*
1264	* We need some free space to perform this test.
1265	*/
1266	g_szDir[g_cchDir] = '\0';
1267	RTFOFF cbFree = 0;
1268	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
1269	if (cbFree < _1M)
1270	{
1271	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 1MB", cbFree);
1272	return;
1273	}
1274
1275	/*
1276	* Create a file and play around with it's size.
1277	* We let the current file position follow the end position as we make changes.
1278	*/
1279	RTFILE hFile1;
1280	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file20")),
1281	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
1282	uint64_t cbFile = UINT64_MAX;
1283	RTTESTI_CHECK_RC(RTFileGetSize(hFile1, &cbFile), VINF_SUCCESS);
1284	RTTESTI_CHECK(cbFile == 0);
1285
1286	uint8_t abBuf[4096];
1287	static uint64_t const s_acbChanges[] =
1288	{
1289	1023, 1024, 1024, 1025, 8192, 11111, _1M, _8M, _8M,
1290	_4M, _2M + 1, _1M - 1, 65537, 65536, 32768, 8000, 7999, 7998, 1024, 1, 0
1291	};
1292	uint64_t cbOld = 0;
1293	for (unsigned i = 0; i < RT_ELEMENTS(s_acbChanges); i++)
1294	{
1295	uint64_t cbNew = s_acbChanges[i];
1296	if (cbNew + _64K >= (uint64_t)cbFree)
1297	continue;
1298
1299	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, cbNew), VINF_SUCCESS);
1300	RTTESTI_CHECK_RC(RTFileGetSize(hFile1, &cbFile), VINF_SUCCESS);
1301	RTTESTI_CHECK_MSG(cbFile == cbNew, ("cbFile=%#RX64 cbNew=%#RX64\n", cbFile, cbNew));
1302
1303	if (cbNew > cbOld)
1304	{
1305	/* Check that the extension is all zeroed: */
1306	uint64_t cbLeft = cbNew - cbOld;
1307	while (cbLeft > 0)
1308	{
1309	memset(abBuf, 0xff, sizeof(abBuf));
1310	size_t cbToRead = sizeof(abBuf);
1311	if (cbToRead > cbLeft)
1312	cbToRead = (size_t)cbLeft;
1313	RTTESTI_CHECK_RC(RTFileRead(hFile1, abBuf, cbToRead, NULL), VINF_SUCCESS);
1314	RTTESTI_CHECK(ASMMemIsZero(abBuf, cbToRead));
1315	cbLeft -= cbToRead;
1316	}
1317	}
1318	else
1319	{
1320	/* Check that reading fails with EOF because current position is now beyond the end: */
1321	RTTESTI_CHECK_RC(RTFileRead(hFile1, abBuf, 1, NULL), VERR_EOF);
1322
1323	/* Keep current position at the end of the file: */
1324	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbNew, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1325	}
1326	cbOld = cbNew;
1327	}
1328
1329	/*
1330	* Profile just the file setting operation itself, keeping the changes within
1331	* an allocation unit to avoid needing to adjust the actual (host) FS allocation.
1332	* ASSUMES allocation unit >= 512 and power of two.
1333	*/
1334	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, _64K), VINF_SUCCESS);
1335	PROFILE_FN(RTFileSetSize(hFile1, _64K - (iIteration & 255) - 128), g_nsTestRun, "RTFileSetSize/noalloc");
1336
1337	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, 0), VINF_SUCCESS);
1338	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1339	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
1340	}
1341
1342
1343	int fsPerfIoPrepFile(RTFILE hFile1, uint64_t cbFile, uint8_t **ppbFree)
1344	{
1345	/*
1346	* Seek to the end - 4K and write the last 4K.
1347	* This should have the effect of filling the whole file with zeros.
1348	*/
1349	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, cbFile - _4K, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1350	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, g_abRTZero4K, _4K, NULL), VINF_SUCCESS, rcCheck);
1351
1352	/*
1353	* Check that the space we searched across actually is zero filled.
1354	*/
1355	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1356	size_t cbBuf = _1M;
1357	uint8_t pbBuf = ppbFree = (uint8_t *)RTMemAlloc(cbBuf);
1358	RTTESTI_CHECK_RET(pbBuf != NULL, VERR_NO_MEMORY);
1359	uint64_t cbLeft = cbFile;
1360	while (cbLeft > 0)
1361	{
1362	size_t cbToRead = cbBuf;
1363	if (cbToRead > cbLeft)
1364	cbToRead = (size_t)cbLeft;
1365	pbBuf[cbToRead] = 0xff;
1366
1367	RTTESTI_CHECK_RC_RET(RTFileRead(hFile1, pbBuf, cbToRead, NULL), VINF_SUCCESS, rcCheck);
1368	RTTESTI_CHECK_RET(ASMMemIsZero(pbBuf, cbToRead), VERR_MISMATCH);
1369
1370	cbLeft -= cbToRead;
1371	}
1372
1373	/*
1374	* Fill the file with 0xf6 and insert offset markers with 1KB intervals.
1375	*/
1376	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1377	memset(pbBuf, 0xf6, cbBuf);
1378	cbLeft = cbFile;
1379	uint64_t off = 0;
1380	while (cbLeft > 0)
1381	{
1382	Assert(!(off & (_1K - 1)));
1383	Assert(!(cbBuf & (_1K - 1)));
1384	for (size_t offBuf = 0; offBuf < cbBuf; offBuf += _1K, off += _1K)
1385	(uint64_t )&pbBuf[offBuf] = off;
1386
1387	size_t cbToWrite = cbBuf;
1388	if (cbToWrite > cbLeft)
1389	cbToWrite = (size_t)cbLeft;
1390
1391	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBuf, cbToWrite, NULL), VINF_SUCCESS, rcCheck);
1392
1393	cbLeft -= cbToWrite;
1394	}
1395
1396	return VINF_SUCCESS;
1397	}
1398
1399
1400	/**
1401	* Checks the content read from the file fsPerfIoPrepFile() prepared.
1402	*/
1403	bool fsPerfCheckReadBuf(unsigned uLineNo, uint64_t off, uint8_t const *pbBuf, size_t cbBuf, uint8_t bFiller = 0xf6)
1404	{
1405	uint32_t cMismatches = 0;
1406	size_t offBuf = 0;
1407	uint32_t offBlock = (uint32_t)(off & (_1K - 1));
1408	while (offBuf < cbBuf)
1409	{
1410	/*
1411	* Check the offset marker:
1412	*/
1413	if (offBlock < sizeof(uint64_t))
1414	{
1415	RTUINT64U uMarker;
1416	uMarker.u = off + offBuf - offBlock;
1417	unsigned offMarker = offBlock & (sizeof(uint64_t) - 1);
1418	while (offMarker < sizeof(uint64_t) && offBuf < cbBuf)
1419	{
1420	if (uMarker.au8[offMarker] != pbBuf[offBuf])
1421	{
1422	RTTestIFailed("%u: Mismatch at buffer/file offset %#zx/%#RX64: %#x, expected %#x",
1423	uLineNo, offBuf, off + offBuf, pbBuf[offBuf], uMarker.au8[offMarker]);
1424	if (cMismatches++ > 32)
1425	return false;
1426	}
1427	offMarker++;
1428	offBuf++;
1429	}
1430	offBlock = sizeof(uint64_t);
1431	}
1432
1433	/*
1434	* Check the filling:
1435	*/
1436	size_t cbFilling = RT_MIN(_1K - offBlock, cbBuf - offBuf);
1437	if ( cbFilling == 0
1438	\|\| ASMMemIsAllU8(&pbBuf[offBuf], cbFilling, bFiller))
1439	offBuf += cbFilling;
1440	else
1441	{
1442	/* Some mismatch, locate it/them: */
1443	while (cbFilling > 0 && offBuf < cbBuf)
1444	{
1445	if (pbBuf[offBuf] != bFiller)
1446	{
1447	RTTestIFailed("%u: Mismatch at buffer/file offset %#zx/%#RX64: %#x, expected %#04x",
1448	uLineNo, offBuf, off + offBuf, pbBuf[offBuf], bFiller);
1449	if (cMismatches++ > 32)
1450	return false;
1451	}
1452	offBuf++;
1453	cbFilling--;
1454	}
1455	}
1456	offBlock = 0;
1457	}
1458	return cMismatches == 0;
1459	}
1460
1461
1462	/**
1463	* Sets up write buffer with offset markers and fillers.
1464	*/
1465	void fsPerfFillWriteBuf(uint64_t off, uint8_t *pbBuf, size_t cbBuf, uint8_t bFiller = 0xf6)
1466	{
1467	uint32_t offBlock = (uint32_t)(off & (_1K - 1));
1468	while (cbBuf > 0)
1469	{
1470	/* The marker. */
1471	if (offBlock < sizeof(uint64_t))
1472	{
1473	RTUINT64U uMarker;
1474	uMarker.u = off + offBlock;
1475	if (cbBuf > sizeof(uMarker) - offBlock)
1476	{
1477	memcpy(pbBuf, &uMarker.au8[offBlock], sizeof(uMarker) - offBlock);
1478	pbBuf += sizeof(uMarker) - offBlock;
1479	cbBuf -= sizeof(uMarker) - offBlock;
1480	off += sizeof(uMarker) - offBlock;
1481	}
1482	else
1483	{
1484	memcpy(pbBuf, &uMarker.au8[offBlock], cbBuf);
1485	return;
1486	}
1487	offBlock = sizeof(uint64_t);
1488	}
1489
1490	/* Do the filling. */
1491	size_t cbFilling = RT_MIN(_1K - offBlock, cbBuf);
1492	memset(pbBuf, bFiller, cbFilling);
1493	pbBuf += cbFilling;
1494	cbBuf -= cbFilling;
1495	off += cbFilling;
1496
1497	offBlock = 0;
1498	}
1499	}
1500
1501
1502
1503	void fsPerfIoSeek(RTFILE hFile1, uint64_t cbFile)
1504	{
1505	/*
1506	* Do a bunch of search tests, most which are random.
1507	*/
1508	struct
1509	{
1510	int rc;
1511	uint32_t uMethod;
1512	int64_t offSeek;
1513	uint64_t offActual;
1514
1515	} aSeeks[9 + 64] =
1516	{
1517	{ VINF_SUCCESS, RTFILE_SEEK_BEGIN, 0, 0 },
1518	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 0, 0 },
1519	{ VINF_SUCCESS, RTFILE_SEEK_END, 0, cbFile },
1520	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, -4096, cbFile - 4096 },
1521	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 4096 - (int64_t)cbFile, 0 },
1522	{ VINF_SUCCESS, RTFILE_SEEK_END, -(int64_t)cbFile/2, cbFile / 2 + (cbFile & 1) },
1523	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, -(int64_t)cbFile/2, 0 },
1524	#if defined(RT_OS_WINDOWS)
1525	{ VERR_NEGATIVE_SEEK, RTFILE_SEEK_CURRENT, -1, 0 },
1526	#else
1527	{ VERR_INVALID_PARAMETER, RTFILE_SEEK_CURRENT, -1, 0 },
1528	#endif
1529	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 0, 0 },
1530	};
1531
1532	uint64_t offActual = 0;
1533	for (unsigned i = 9; i < RT_ELEMENTS(aSeeks); i++)
1534	{
1535	switch (RTRandU32Ex(RTFILE_SEEK_BEGIN, RTFILE_SEEK_END))
1536	{
1537	default: AssertFailedBreak();
1538	case RTFILE_SEEK_BEGIN:
1539	aSeeks[i].uMethod = RTFILE_SEEK_BEGIN;
1540	aSeeks[i].rc = VINF_SUCCESS;
1541	aSeeks[i].offSeek = RTRandU64Ex(0, cbFile + cbFile / 8);
1542	aSeeks[i].offActual = offActual = aSeeks[i].offSeek;
1543	break;
1544
1545	case RTFILE_SEEK_CURRENT:
1546	aSeeks[i].uMethod = RTFILE_SEEK_CURRENT;
1547	aSeeks[i].rc = VINF_SUCCESS;
1548	aSeeks[i].offSeek = (int64_t)RTRandU64Ex(0, cbFile + cbFile / 8) - (int64_t)offActual;
1549	aSeeks[i].offActual = offActual += aSeeks[i].offSeek;
1550	break;
1551
1552	case RTFILE_SEEK_END:
1553	aSeeks[i].uMethod = RTFILE_SEEK_END;
1554	aSeeks[i].rc = VINF_SUCCESS;
1555	aSeeks[i].offSeek = -(int64_t)RTRandU64Ex(0, cbFile);
1556	aSeeks[i].offActual = offActual = cbFile + aSeeks[i].offSeek;
1557	break;
1558	}
1559	}
1560
1561	for (unsigned iDoReadCheck = 0; iDoReadCheck < 2; iDoReadCheck++)
1562	{
1563	for (uint32_t i = 0; i < RT_ELEMENTS(aSeeks); i++)
1564	{
1565	offActual = UINT64_MAX;
1566	int rc = RTFileSeek(hFile1, aSeeks[i].offSeek, aSeeks[i].uMethod, &offActual);
1567	if (rc != aSeeks[i].rc)
1568	RTTestIFailed("Seek #%u: Expected %Rrc, got %Rrc", i, aSeeks[i].rc, rc);
1569	if (RT_SUCCESS(rc) && offActual != aSeeks[i].offActual)
1570	RTTestIFailed("Seek #%u: offActual %#RX64, expected %#RX64", i, offActual, aSeeks[i].offActual);
1571	if (RT_SUCCESS(rc))
1572	{
1573	uint64_t offTell = RTFileTell(hFile1);
1574	if (offTell != offActual)
1575	RTTestIFailed("Seek #%u: offActual %#RX64, RTFileTell %#RX64", i, offActual, offTell);
1576	}
1577
1578	if (RT_SUCCESS(rc) && offActual + _2K <= cbFile && iDoReadCheck)
1579	{
1580	uint8_t abBuf[_2K];
1581	RTTESTI_CHECK_RC(rc = RTFileRead(hFile1, abBuf, sizeof(abBuf), NULL), VINF_SUCCESS);
1582	if (RT_SUCCESS(rc))
1583	{
1584	size_t offMarker = (size_t)(RT_ALIGN_64(offActual, _1K) - offActual);
1585	uint64_t uMarker = (uint64_t )&abBuf[offMarker]; /** @todo potentially unaligned access */
1586	if (uMarker != offActual + offMarker)
1587	RTTestIFailed("Seek #%u: Invalid marker value (@ %#RX64): %#RX64, expected %#RX64",
1588	i, offActual, uMarker, offActual + offMarker);
1589
1590	RTTESTI_CHECK_RC(RTFileSeek(hFile1, -(int64_t)sizeof(abBuf), RTFILE_SEEK_CURRENT, NULL), VINF_SUCCESS);
1591	}
1592	}
1593	}
1594	}
1595
1596
1597	/*
1598	* Profile seeking relative to the beginning of the file and relative
1599	* to the end. The latter might be more expensive in a SF context.
1600	*/
1601	PROFILE_FN(RTFileSeek(hFile1, iIteration < cbFile ? iIteration : iIteration % cbFile, RTFILE_SEEK_BEGIN, NULL),
1602	g_nsTestRun, "RTFileSeek/BEGIN");
1603	PROFILE_FN(RTFileSeek(hFile1, iIteration < cbFile ? -(int64_t)iIteration : -(int64_t)(iIteration % cbFile), RTFILE_SEEK_END, NULL),
1604	g_nsTestRun, "RTFileSeek/END");
1605
1606	}
1607
1608
1609	/** For fsPerfIoRead and fsPerfIoWrite. */
1610	#define PROFILE_IO_FN(a_szOperation, a_fnCall) \
1611	do \
1612	{ \
1613	RTTESTI_CHECK_RC_RETV(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS); \
1614	uint64_t offActual = 0; \
1615	uint32_t cSeeks = 0; \
1616	\
1617	/* Estimate how many iterations we need to fill up the given timeslot: */ \
1618	fsPerfYield(); \
1619	uint64_t nsStart = RTTimeNanoTS(); \
1620	uint64_t ns; \
1621	do \
1622	ns = RTTimeNanoTS(); \
1623	while (ns == nsStart); \
1624	nsStart = ns; \
1625	\
1626	uint64_t iIteration = 0; \
1627	do \
1628	{ \
1629	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
1630	iIteration++; \
1631	ns = RTTimeNanoTS() - nsStart; \
1632	} while (ns < RT_NS_10MS); \
1633	ns /= iIteration; \
1634	if (ns > g_nsPerNanoTSCall + 32) \
1635	ns -= g_nsPerNanoTSCall; \
1636	uint64_t cIterations = g_nsTestRun / ns; \
1637	\
1638	/* Do the actual profiling: */ \
1639	cSeeks = 0; \
1640	iIteration = 0; \
1641	fsPerfYield(); \
1642	nsStart = RTTimeNanoTS(); \
1643	for (uint32_t iAdjust = 0; iAdjust < 4; iAdjust++) \
1644	{ \
1645	for (; iIteration < cIterations; iIteration++)\
1646	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
1647	ns = RTTimeNanoTS() - nsStart;\
1648	if (ns >= g_nsTestRun - (g_nsTestRun / 10)) \
1649	break; \
1650	cIterations += cIterations / 4; \
1651	if (cIterations & 1) \
1652	cIterations++; \
1653	nsStart += g_nsPerNanoTSCall; \
1654	} \
1655	RTTestIValueF(ns / iIteration, \
1656	RTTESTUNIT_NS_PER_OCCURRENCE, a_szOperation "/seq/%RU32 latency", cbBlock); \
1657	RTTestIValueF((uint64_t)iIteration * cbBlock / ((double)ns / RT_NS_1SEC), \
1658	RTTESTUNIT_BYTES_PER_SEC, a_szOperation "/seq/%RU32 throughput", cbBlock); \
1659	RTTestIValueF(iIteration, \
1660	RTTESTUNIT_CALLS, a_szOperation "/seq/%RU32 calls", cbBlock); \
1661	RTTestIValueF((uint64_t)iIteration * cbBlock, \
1662	RTTESTUNIT_BYTES, a_szOperation "/seq/%RU32 bytes", cbBlock); \
1663	RTTestIValueF(cSeeks, \
1664	RTTESTUNIT_OCCURRENCES, a_szOperation "/seq/%RU32 seeks", cbBlock); \
1665	if (g_fShowDuration) \
1666	RTTestIValueF(ns, RTTESTUNIT_NS, a_szOperation "/seq/%RU32 duration", cbBlock); \
1667	} while (0)
1668
1669
1670	/**
1671	* One RTFileRead profiling iteration.
1672	*/
1673	DECL_FORCE_INLINE(int) fsPerfIoReadWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
1674	uint64_t poffActual, uint32_t pcSeeks)
1675	{
1676	/* Do we need to seek back to the start? */
1677	if (*poffActual + cbBlock <= cbFile)
1678	{ /* likely */ }
1679	else
1680	{
1681	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1682	*pcSeeks += 1;
1683	*poffActual = 0;
1684	}
1685
1686	size_t cbActuallyRead = 0;
1687	RTTESTI_CHECK_RC_RET(RTFileRead(hFile1, pbBlock, cbBlock, &cbActuallyRead), VINF_SUCCESS, rcCheck);
1688	if (cbActuallyRead == cbBlock)
1689	{
1690	*poffActual += cbActuallyRead;
1691	return VINF_SUCCESS;
1692	}
1693	RTTestIFailed("RTFileRead at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyRead, cbBlock);
1694	*poffActual += cbActuallyRead;
1695	return VERR_READ_ERROR;
1696	}
1697
1698
1699	void fsPerfIoReadBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
1700	{
1701	RTTestISubF("IO - Sequential read %RU32", cbBlock);
1702
1703	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
1704	if (pbBuf)
1705	{
1706	memset(pbBuf, 0xf7, cbBlock);
1707	PROFILE_IO_FN("RTFileRead", fsPerfIoReadWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
1708	RTMemPageFree(pbBuf, cbBlock);
1709	}
1710	else
1711	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
1712	}
1713
1714
1715	void fsPerfRead(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
1716	{
1717	RTTestISubF("IO - RTFileRead");
1718
1719	/*
1720	* Allocate a big buffer we can play around with. Min size is 1MB.
1721	*/
1722	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
1723	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
1724	while (!pbBuf)
1725	{
1726	cbBuf /= 2;
1727	RTTESTI_CHECK_RETV(cbBuf >= _1M);
1728	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
1729	}
1730
1731	#if 1
1732	/*
1733	* Start at the beginning and read the full buffer in random small chunks, thereby
1734	* checking that unaligned buffer addresses, size and file offsets work fine.
1735	*/
1736	struct
1737	{
1738	uint64_t offFile;
1739	uint32_t cbMax;
1740	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
1741	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++)
1742	{
1743	memset(pbBuf, 0x55, cbBuf);
1744	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1745	for (size_t offBuf = 0; offBuf < cbBuf; )
1746	{
1747	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
1748	uint32_t const cbToRead = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, aRuns[i].cbMax)
1749	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
1750	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
1751	size_t cbActual = 0;
1752	RTTESTI_CHECK_RC(RTFileRead(hFile1, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
1753	if (cbActual == cbToRead)
1754	offBuf += cbActual;
1755	else
1756	{
1757	RTTestIFailed("Attempting to read %#x bytes at %#zx, only got %#x bytes back!\n", cbToRead, offBuf, cbActual);
1758	if (cbActual)
1759	offBuf += cbActual;
1760	else
1761	pbBuf[offBuf++] = 0x11;
1762	}
1763	}
1764	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf);
1765	}
1766	#endif
1767
1768	/*
1769	* Test reading beyond the end of the file.
1770	*/
1771	size_t const acbMax[] = { cbBuf, _64K, _16K, _4K, 256 };
1772	uint32_t const aoffFromEos[] =
1773	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 63, 64, 127, 128, 255, 254, 256, 1023, 1024, 2048,
1774	4092, 4093, 4094, 4095, 4096, 4097, 4098, 4099, 4100, 8192, 16384, 32767, 32768, 32769, 65535, 65536, _1M - 1
1775	};
1776	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
1777	{
1778	size_t const cbMaxRead = acbMax[iMax];
1779	for (uint32_t iOffFromEos = 0; iOffFromEos < RT_ELEMENTS(aoffFromEos); iOffFromEos++)
1780	{
1781	uint32_t off = aoffFromEos[iOffFromEos];
1782	if (off >= cbMaxRead)
1783	continue;
1784	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1785	size_t cbActual = ~(size_t)0;
1786	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
1787	RTTESTI_CHECK(cbActual == off);
1788
1789	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1790	cbActual = ~(size_t)0;
1791	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, off, &cbActual), VINF_SUCCESS);
1792	RTTESTI_CHECK_MSG(cbActual == off, ("%#zx vs %#zx", cbActual, off));
1793
1794	cbActual = ~(size_t)0;
1795	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, 1, &cbActual), VINF_SUCCESS);
1796	RTTESTI_CHECK(cbActual == 0);
1797
1798	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
1799	}
1800	}
1801
1802	/*
1803	* Test reading beyond end of the file.
1804	*/
1805	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
1806	{
1807	size_t const cbMaxRead = acbMax[iMax];
1808	for (uint32_t off = 0; off < 256; off++)
1809	{
1810	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile + off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1811	size_t cbActual = ~(size_t)0;
1812	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
1813	RTTESTI_CHECK(cbActual == 0);
1814
1815	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
1816	}
1817	}
1818
1819	/*
1820	* Do uncached access, must be page aligned.
1821	*/
1822	uint32_t cbPage = PAGE_SIZE;
1823	memset(pbBuf, 0x66, cbBuf);
1824	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1825	for (size_t offBuf = 0; offBuf < cbBuf; )
1826	{
1827	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
1828	uint32_t const cPagesToRead = RTRandU32Ex(1, cPagesLeft);
1829	size_t const cbToRead = cPagesToRead * (size_t)cbPage;
1830	size_t cbActual = 0;
1831	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
1832	if (cbActual == cbToRead)
1833	offBuf += cbActual;
1834	else
1835	{
1836	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x bytes back!\n", cbToRead, offBuf, cbActual);
1837	if (cbActual)
1838	offBuf += cbActual;
1839	else
1840	{
1841	memset(&pbBuf[offBuf], 0x11, cbPage);
1842	offBuf += cbPage;
1843	}
1844	}
1845	}
1846	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf);
1847
1848	/*
1849	* Check reading zero bytes at the end of the file.
1850	* Requires native call because RTFileWrite doesn't call kernel on zero byte reads.
1851	*/
1852	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
1853	#ifdef RT_OS_WINDOWS
1854	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
1855	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
1856	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
1857	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
1858	RTTESTI_CHECK(Ios.Information == 0);
1859
1860	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
1861	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 1, NULL, NULL);
1862	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x", rcNt));
1863	RTTESTI_CHECK(Ios.Status == STATUS_END_OF_FILE);
1864	RTTESTI_CHECK(Ios.Information == 0);
1865	#endif
1866
1867	/*
1868	* Other OS specific stuff.
1869	*/
1870	#ifdef RT_OS_WINDOWS
1871	/* Check that reading at an offset modifies the position: */
1872	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
1873	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
1874
1875	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
1876	LARGE_INTEGER offNt;
1877	offNt.QuadPart = cbFile / 2;
1878	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
1879	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
1880	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
1881	RTTESTI_CHECK(Ios.Information == _4K);
1882	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
1883	fsPerfCheckReadBuf(__LINE__, cbFile / 2, pbBuf, _4K);
1884	#endif
1885
1886	RTMemPageFree(pbBuf, cbBuf);
1887	}
1888
1889
1890	/**
1891	* One RTFileWrite profiling iteration.
1892	*/
1893	DECL_FORCE_INLINE(int) fsPerfIoWriteWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
1894	uint64_t poffActual, uint32_t pcSeeks)
1895	{
1896	/* Do we need to seek back to the start? */
1897	if (*poffActual + cbBlock <= cbFile)
1898	{ /* likely */ }
1899	else
1900	{
1901	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1902	*pcSeeks += 1;
1903	*poffActual = 0;
1904	}
1905
1906	size_t cbActuallyWritten = 0;
1907	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBlock, cbBlock, &cbActuallyWritten), VINF_SUCCESS, rcCheck);
1908	if (cbActuallyWritten == cbBlock)
1909	{
1910	*poffActual += cbActuallyWritten;
1911	return VINF_SUCCESS;
1912	}
1913	RTTestIFailed("RTFileWrite at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyWritten, cbBlock);
1914	*poffActual += cbActuallyWritten;
1915	return VERR_WRITE_ERROR;
1916	}
1917
1918
1919	void fsPerfIoWriteBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
1920	{
1921	RTTestISubF("IO - Sequential write %RU32", cbBlock);
1922
1923	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
1924	if (pbBuf)
1925	{
1926	memset(pbBuf, 0xf7, cbBlock);
1927	PROFILE_IO_FN("RTFileWrite", fsPerfIoWriteWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
1928	RTMemPageFree(pbBuf, cbBlock);
1929	}
1930	else
1931	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
1932	}
1933
1934
1935	void fsPerfWrite(RTFILE hFile1, RTFILE hFileNoCache, RTFILE hFileWriteThru, uint64_t cbFile)
1936	{
1937	RTTestISubF("IO - RTFileWrite");
1938
1939	/*
1940	* Allocate a big buffer we can play around with. Min size is 1MB.
1941	*/
1942	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
1943	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
1944	while (!pbBuf)
1945	{
1946	cbBuf /= 2;
1947	RTTESTI_CHECK_RETV(cbBuf >= _1M);
1948	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
1949	}
1950
1951	/*
1952	* Start at the beginning and write out the full buffer in random small chunks, thereby
1953	* checking that unaligned buffer addresses, size and file offsets work fine.
1954	*/
1955	struct
1956	{
1957	uint64_t offFile;
1958	uint32_t cbMax;
1959	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
1960	uint8_t bFiller = 0x88;
1961	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++, bFiller)
1962	{
1963	fsPerfFillWriteBuf(aRuns[i].offFile, pbBuf, cbBuf, bFiller);
1964	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
1965
1966	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1967	for (size_t offBuf = 0; offBuf < cbBuf; )
1968	{
1969	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
1970	uint32_t const cbToWrite = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, aRuns[i].cbMax)
1971	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
1972	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
1973	size_t cbActual = 0;
1974	RTTESTI_CHECK_RC(RTFileWrite(hFile1, &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
1975	if (cbActual == cbToWrite)
1976	offBuf += cbActual;
1977	else
1978	{
1979	RTTestIFailed("Attempting to write %#x bytes at %#zx, only got %#x written!\n", cbToWrite, offBuf, cbActual);
1980	if (cbActual)
1981	offBuf += cbActual;
1982	else
1983	pbBuf[offBuf++] = 0x11;
1984	}
1985	}
1986
1987	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, aRuns[i].offFile, pbBuf, cbBuf, NULL), VINF_SUCCESS);
1988	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
1989	}
1990
1991
1992	/*
1993	* Do uncached and write-thru accesses, must be page aligned.
1994	*/
1995	RTFILE ahFiles[2] = { hFileWriteThru, hFileNoCache };
1996	for (unsigned iFile = 0; iFile < RT_ELEMENTS(ahFiles); iFile++, bFiller++)
1997	{
1998	fsPerfFillWriteBuf(0, pbBuf, cbBuf, bFiller);
1999	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
2000	RTTESTI_CHECK_RC(RTFileSeek(ahFiles[iFile], 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2001
2002	uint32_t cbPage = PAGE_SIZE;
2003	for (size_t offBuf = 0; offBuf < cbBuf; )
2004	{
2005	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
2006	uint32_t const cPagesToWrite = RTRandU32Ex(1, cPagesLeft);
2007	size_t const cbToWrite = cPagesToWrite * (size_t)cbPage;
2008	size_t cbActual = 0;
2009	RTTESTI_CHECK_RC(RTFileWrite(ahFiles[iFile], &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
2010	if (cbActual == cbToWrite)
2011	{
2012	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, offBuf, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
2013	fsPerfCheckReadBuf(__LINE__, offBuf, pbBuf, cbToWrite, bFiller);
2014	offBuf += cbActual;
2015	}
2016	else
2017	{
2018	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x written!\n", cbToWrite, offBuf, cbActual);
2019	if (cbActual)
2020	offBuf += cbActual;
2021	else
2022	{
2023	memset(&pbBuf[offBuf], 0x11, cbPage);
2024	offBuf += cbPage;
2025	}
2026	}
2027	}
2028
2029	RTTESTI_CHECK_RC(RTFileReadAt(ahFiles[iFile], 0, pbBuf, cbBuf, NULL), VINF_SUCCESS);
2030	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
2031	}
2032
2033	/*
2034	* Check the behavior of writing zero bytes to the file _4K from the end
2035	* using native API. In the olden days zero sized write have been known
2036	* to be used to truncate a file.
2037	*/
2038	RTTESTI_CHECK_RC(RTFileSeek(hFile1, -_4K, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
2039	#ifdef RT_OS_WINDOWS
2040	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2041	NTSTATUS rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
2042	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
2043	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
2044	RTTESTI_CHECK(Ios.Information == 0);
2045
2046	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, _4K, NULL), VINF_SUCCESS);
2047	fsPerfCheckReadBuf(__LINE__, cbFile - _4K, pbBuf, _4K, pbBuf[0x8]);
2048	#endif
2049
2050	/*
2051	* Other OS specific stuff.
2052	*/
2053	#ifdef RT_OS_WINDOWS
2054	/* Check that reading at an offset modifies the position: */
2055	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, cbFile / 2, pbBuf, _4K, NULL), VINF_SUCCESS);
2056	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
2057	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
2058
2059	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
2060	LARGE_INTEGER offNt;
2061	offNt.QuadPart = cbFile / 2;
2062	rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
2063	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
2064	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
2065	RTTESTI_CHECK(Ios.Information == _4K);
2066	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
2067	#endif
2068
2069	RT_NOREF(hFileNoCache, hFileWriteThru);
2070	RTMemPageFree(pbBuf, cbBuf);
2071	}
2072
2073
2074	/**
2075	* Worker for testing RTFileFlush.
2076	*/
2077	DECL_FORCE_INLINE(int) fsPerfFSyncWorker(RTFILE hFile1, uint64_t cbFile, uint8_t pbBuf, size_t cbBuf, uint64_t poffFile)
2078	{
2079	if (*poffFile + cbBuf <= cbFile)
2080	{ /* likely */ }
2081	else
2082	{
2083	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2084	*poffFile = 0;
2085	}
2086
2087	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBuf, cbBuf, NULL), VINF_SUCCESS, rcCheck);
2088	RTTESTI_CHECK_RC_RET(RTFileFlush(hFile1), VINF_SUCCESS, rcCheck);
2089
2090	*poffFile += cbBuf;
2091	return VINF_SUCCESS;
2092	}
2093
2094
2095	void fsPerfFSync(RTFILE hFile1, uint64_t cbFile)
2096	{
2097	RTTestISub("fsync");
2098
2099	RTTESTI_CHECK_RC(RTFileFlush(hFile1), VINF_SUCCESS);
2100
2101	PROFILE_FN(RTFileFlush(hFile1), g_nsTestRun, "RTFileFlush");
2102
2103	size_t cbBuf = PAGE_SIZE;
2104	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
2105	RTTESTI_CHECK_RETV(pbBuf != NULL);
2106	memset(pbBuf, 0xf4, cbBuf);
2107
2108	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2109	uint64_t offFile = 0;
2110	PROFILE_FN(fsPerfFSyncWorker(hFile1, cbFile, pbBuf, cbBuf, &offFile), g_nsTestRun, "RTFileWrite[Page]/RTFileFlush");
2111
2112	RTMemPageFree(pbBuf, cbBuf);
2113	}
2114
2115
2116	void fsPerfMMap(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
2117	{
2118	RTTestISub("mmap");
2119	#if defined(RT_OS_WINDOWS)
2120	static const char * const s_apszStates[] = { "readonly", "writecopy", "readwrite" };
2121	enum { kMMap_ReadOnly = 0, kMMap_WriteCopy, kMMap_ReadWrite, kMMap_End };
2122	for (int enmState = kMMap_ReadOnly; enmState < kMMap_End; enmState++)
2123	{
2124	/*
2125	* Do the mapping.
2126	*/
2127	size_t cbMapping = (size_t)cbFile;
2128	if (cbMapping != cbFile)
2129	cbMapping = _256M;
2130	uint8_t *pbMapping;
2131
2132	# ifdef RT_OS_WINDOWS
2133	HANDLE hSection;
2134	for (;; cbMapping /= 2)
2135	{
2136	hSection = CreateFileMapping((HANDLE)RTFileToNative(hFile1), NULL,
2137	enmState == kMMap_ReadOnly ? PAGE_READONLY
2138	: enmState == kMMap_WriteCopy ? PAGE_WRITECOPY : PAGE_READWRITE,
2139	(uint32_t)(cbMapping >> 32), (uint32_t)cbMapping, NULL);
2140	DWORD dwErr1 = GetLastError();
2141	DWORD dwErr2 = 0;
2142	if (hSection != NULL)
2143	{
2144	pbMapping = (uint8_t *)MapViewOfFile(hSection,
2145	enmState == kMMap_ReadOnly ? FILE_MAP_READ
2146	: enmState == kMMap_WriteCopy ? FILE_MAP_COPY
2147	: FILE_MAP_WRITE,
2148	0, 0, cbMapping);
2149	if (pbMapping)
2150	break;
2151	dwErr2 = GetLastError();
2152	CloseHandle(hSection);
2153	}
2154	if (cbMapping <= _2M)
2155	{
2156	RTTestIFailed("%u: CreateFileMapping or MapViewOfFile failed: %u, %u", enmState, dwErr1, dwErr2);
2157	return;
2158	}
2159	}
2160	# else
2161	for (;; cbMapping /= 2)
2162	{
2163	pbMapping = (uint8_t *)mmap(NULL, cbMapping,
2164	enmState == kMMap_ReadOnly ? PROT_READ : PROT_READ \| PROT_WRITE,
2165	enmState == kMMap_WriteCopy ? MAP_PRIVATE : MAP_SHARED,
2166	(int)RTFileToNative(hFile1), cbMapping);
2167	if ((void *)pbMapping != MAP_FAILED)
2168	break;
2169	RTTESTI_CHECK_MSG_RETV(cbMapping > _2M, ("errno=%d", errno));
2170	}
2171	# endif
2172
2173	/*
2174	* Time page-ins just for fun.
2175	*/
2176	size_t const cPages = cbMapping >> PAGE_SHIFT;
2177	size_t uDummy = 0;
2178	uint64_t ns = RTTimeNanoTS();
2179	for (size_t iPage = 0; iPage < cPages; iPage++)
2180	uDummy += ASMAtomicReadU8(&pbMapping[iPage << PAGE_SHIFT]);
2181	ns = RTTimeNanoTS() - ns;
2182	RTTestIValueF(ns / cPages, RTTESTUNIT_NS_PER_OCCURRENCE, "page-in %s", s_apszStates[enmState]);
2183
2184	/* Check the content. */
2185	fsPerfCheckReadBuf(__LINE__, 0, pbMapping, cbMapping);
2186
2187	if (enmState != kMMap_ReadOnly)
2188	{
2189	/* Write stuff to the first two megabytes. In the COW case, we'll detect
2190	corruption of shared data during content checking of the RW iterations. */
2191	fsPerfFillWriteBuf(0, pbMapping, _2M, 0xf7);
2192	if (enmState == kMMap_ReadWrite)
2193	{
2194	/* For RW we can try read back from the file handle and check if we get
2195	a match there first. */
2196	uint8_t abBuf[_4K];
2197	for (uint32_t off = 0; off < _2M; off += sizeof(abBuf))
2198	{
2199	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, off, abBuf, sizeof(abBuf), NULL), VINF_SUCCESS);
2200	fsPerfCheckReadBuf(__LINE__, off, abBuf, sizeof(abBuf), 0xf7);
2201	}
2202	# ifdef RT_OS_WINDOWS
2203	RTTESTI_CHECK(FlushViewOfFile(pbMapping, _2M));
2204	# else
2205	RTTESTI_CHECK(msync(pbMapping, _2M, MS_SYNC) == 0);
2206	# endif
2207
2208	/*
2209	* Time modifying and flushing a few different number of pages.
2210	*/
2211	static size_t const s_acbFlush[] = { PAGE_SIZE, PAGE_SIZE * 2, PAGE_SIZE * 3, PAGE_SIZE * 8, PAGE_SIZE * 16, _2M };
2212	for (unsigned iFlushSize = 0 ; iFlushSize < RT_ELEMENTS(s_acbFlush); iFlushSize++)
2213	{
2214	size_t const cbFlush = s_acbFlush[iFlushSize];
2215	if (cbFlush > cbMapping)
2216	continue;
2217
2218	size_t const cFlushes = cbMapping / cbFlush;
2219	uint8_t *pbCur = pbMapping;
2220	ns = RTTimeNanoTS();
2221	for (size_t iFlush = 0; iFlush < cFlushes; iFlush++, pbCur += cbFlush)
2222	{
2223	for (size_t offFlush = 0; offFlush < cbFlush; offFlush += PAGE_SIZE)
2224	(size_t volatile )&pbCur[offFlush + 8] = cbFlush;
2225	# ifdef RT_OS_WINDOWS
2226	RTTESTI_CHECK(FlushViewOfFile(pbCur, cbFlush));
2227	# else
2228	RTTESTI_CHECK(msync(pbCur, cbFlush, MS_SYNC) == 0);
2229	# endif
2230	}
2231	ns = RTTimeNanoTS() - ns;
2232	RTTestIValueF(ns / cPages, RTTESTUNIT_NS_PER_OCCURRENCE, "touch/flush/%zu", cbFlush);
2233
2234	/*
2235	* Check that all the changes made it thru to the file:
2236	*/
2237	size_t cbBuf = _2M;
2238	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(_2M);
2239	if (!pbBuf)
2240	{
2241	cbBuf = _4K;
2242	pbBuf = (uint8_t *)RTMemPageAlloc(_2M);
2243	}
2244	if (pbBuf)
2245	{
2246	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2247	size_t const cbToCheck = cFlushes * cbFlush;
2248	unsigned cErrors = 0;
2249	for (size_t offBuf = 0; cErrors < 32 && offBuf < cbToCheck; offBuf += cbBuf)
2250	{
2251	size_t cbToRead = RT_MIN(cbBuf, cbToCheck - offBuf);
2252	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, pbBuf, cbToRead, NULL), VINF_SUCCESS);
2253
2254	for (size_t offFlush = 0; offFlush < cbToRead; offFlush += PAGE_SIZE)
2255	if ((size_t volatile )&pbBuf[offFlush + 8] != cbFlush)
2256	{
2257	RTTestIFailed("Flush issue at offset #%zx: %#zx, expected %#zx (cbFlush=%#zx)",
2258	offBuf, (size_t volatile )&pbBuf[offFlush + 8], cbFlush, cbFlush);
2259	if (++cErrors > 32)
2260	break;
2261	}
2262	}
2263	RTMemPageFree(pbBuf, cbBuf);
2264	}
2265	}
2266	}
2267	}
2268
2269	/*
2270	* Unmap it.
2271	*/
2272	# ifdef RT_OS_WINDOWS
2273	RTTESTI_CHECK(UnmapViewOfFile(pbMapping));
2274	RTTESTI_CHECK(CloseHandle(hSection));
2275	# else
2276	RTTESTI_CHECK(munmap(pbMapping, cbMapping) == 0);
2277	# endif
2278	}
2279
2280	RT_NOREF(hFileNoCache);
2281	#else
2282	RTTestSkipped(g_hTest, "not supported/implemented");
2283	RT_NOREF(hFile1, hFileNoCache, cbFile);
2284	#endif
2285	}
2286
2287
2288	/**
2289	* This does the read, write and seek tests.
2290	*/
2291	void fsPerfIo(void)
2292	{
2293	RTTestISub("I/O");
2294
2295	/*
2296	* Determin the size of the test file.
2297	*/
2298	g_szDir[g_cchDir] = '\0';
2299	RTFOFF cbFree = 0;
2300	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
2301	uint64_t cbFile = g_cbIoFile;
2302	if (cbFile + _16M < (uint64_t)cbFree)
2303	cbFile = RT_ALIGN_64(cbFile, _64K);
2304	else
2305	{
2306	if (cbFree < _32M)
2307	{
2308	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 32MB", cbFree);
2309	return;
2310	}
2311	cbFile = cbFree - (cbFree > _128M ? _64M : _16M);
2312	cbFile = RT_ALIGN_64(cbFile, _64K);
2313	RTTestIPrintf(RTTESTLVL_ALWAYS, "Adjusted file size to %'RU64 bytes, due to %'RU64 bytes free.\n", cbFile, cbFree);
2314	}
2315	if (cbFile < _64K)
2316	{
2317	RTTestSkipped(g_hTest, "Specified test file size too small: %'RU64 bytes, requires >= 64KB", cbFile);
2318	return;
2319	}
2320
2321	/*
2322	* Create a cbFile sized test file.
2323	*/
2324	RTFILE hFile1;
2325	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file21")),
2326	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
2327	RTFILE hFileNoCache;
2328	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileNoCache, g_szDir,
2329	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_NO_CACHE),
2330	VINF_SUCCESS);
2331	RTFILE hFileWriteThru;
2332	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileWriteThru, g_szDir,
2333	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_WRITE_THROUGH),
2334	VINF_SUCCESS);
2335
2336	uint8_t *pbFree = NULL;
2337	int rc = fsPerfIoPrepFile(hFile1, cbFile, &pbFree);
2338	RTMemFree(pbFree);
2339	if (RT_SUCCESS(rc))
2340	{
2341	/*
2342	* Do the testing & profiling.
2343	*/
2344	if (g_fSeek)
2345	fsPerfIoSeek(hFile1, cbFile);
2346	if (g_fRead)
2347	{
2348	fsPerfRead(hFile1, hFileNoCache, cbFile);
2349	for (unsigned i = 0; i < g_cIoBlocks; i++)
2350	fsPerfIoReadBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
2351	}
2352	if (g_fMMap)
2353	fsPerfMMap(hFile1, hFileNoCache, cbFile);
2354	if (g_fWrite)
2355	{
2356	/* This is destructive to the file content. */
2357	fsPerfWrite(hFile1, hFileNoCache, hFileWriteThru, cbFile);
2358	for (unsigned i = 0; i < g_cIoBlocks; i++)
2359	fsPerfIoWriteBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
2360	}
2361	if (g_fFSync)
2362	fsPerfFSync(hFile1, cbFile);
2363	}
2364
2365	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, 0), VINF_SUCCESS);
2366	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
2367	RTTESTI_CHECK_RC(RTFileClose(hFileNoCache), VINF_SUCCESS);
2368	RTTESTI_CHECK_RC(RTFileClose(hFileWriteThru), VINF_SUCCESS);
2369	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
2370	}
2371
2372
2373	static void Usage(PRTSTREAM pStrm)
2374	{
2375	char szExec[RTPATH_MAX];
2376	RTStrmPrintf(pStrm, "usage: %s <-d <testdir>> [options]\n",
2377	RTPathFilename(RTProcGetExecutablePath(szExec, sizeof(szExec))));
2378	RTStrmPrintf(pStrm, "\n");
2379	RTStrmPrintf(pStrm, "options: \n");
2380
2381	for (unsigned i = 0; i < RT_ELEMENTS(g_aCmdOptions); i++)
2382	{
2383	char szHelp[80];
2384	const char *pszHelp;
2385	switch (g_aCmdOptions[i].iShort)
2386	{
2387	case 'd': pszHelp = "The directory to use for testing. Default: CWD/fstestdir"; break;
2388	case 'e': pszHelp = "Enables all tests. Default: -e"; break;
2389	case 'z': pszHelp = "Disables all tests. Default: -e"; break;
2390	case 's': pszHelp = "Set benchmark duration in seconds. Default: 10 sec"; break;
2391	case 'm': pszHelp = "Set benchmark duration in milliseconds. Default: 10000 ms"; break;
2392	case 'v': pszHelp = "More verbose execution."; break;
2393	case 'q': pszHelp = "Quiet execution."; break;
2394	case 'h': pszHelp = "Displays this help and exit"; break;
2395	case 'V': pszHelp = "Displays the program revision"; break;
2396	default:
2397	if (g_aCmdOptions[i].iShort >= kCmdOpt_First)
2398	{
2399	if (RTStrStartsWith(g_aCmdOptions[i].pszLong, "--no-"))
2400	RTStrPrintf(szHelp, sizeof(szHelp), "Disables the '%s' test.", g_aCmdOptions[i].pszLong + 5);
2401	else
2402	RTStrPrintf(szHelp, sizeof(szHelp), "Enables the '%s' test.", g_aCmdOptions[i].pszLong + 2);
2403	pszHelp = szHelp;
2404	}
2405	else
2406	pszHelp = "Option undocumented";
2407	break;
2408	}
2409	if ((unsigned)g_aCmdOptions[i].iShort < 127U)
2410	{
2411	char szOpt[64];
2412	RTStrPrintf(szOpt, sizeof(szOpt), "%s, -%c", g_aCmdOptions[i].pszLong, g_aCmdOptions[i].iShort);
2413	RTStrmPrintf(pStrm, " %-20s%s\n", szOpt, pszHelp);
2414	}
2415	else
2416	RTStrmPrintf(pStrm, " %-20s%s\n", g_aCmdOptions[i].pszLong, pszHelp);
2417	}
2418	}
2419
2420
2421	int main(int argc, char *argv[])
2422	{
2423	/*
2424	* Init IPRT and globals.
2425	*/
2426	int rc = RTTestInitAndCreate("FsPerf", &g_hTest);
2427	if (rc)
2428	return rc;
2429	RTListInit(&g_ManyTreeHead);
2430
2431	/*
2432	* Default values.
2433	*/
2434	rc = RTPathGetCurrent(g_szDir, sizeof(g_szDir) / 2);
2435	if (RT_SUCCESS(rc))
2436	rc = RTPathAppend(g_szDir, sizeof(g_szDir) / 2, "fstestdir-");
2437	if (RT_SUCCESS(rc))
2438	{
2439	g_cchDir = strlen(g_szDir);
2440	g_cchDir += RTStrPrintf(&g_szDir[g_cchDir], sizeof(g_szDir) - g_cchDir, "%u" RTPATH_SLASH_STR, RTProcSelf());
2441	}
2442	else
2443	{
2444	RTTestFailed(g_hTest, "RTPathGetCurrent (or RTPathAppend) failed: %Rrc\n", rc);
2445	return RTTestSummaryAndDestroy(g_hTest);
2446	}
2447
2448	RTGETOPTUNION ValueUnion;
2449	RTGETOPTSTATE GetState;
2450	RTGetOptInit(&GetState, argc, argv, g_aCmdOptions, RT_ELEMENTS(g_aCmdOptions), 1, 0 /* fFlags */);
2451	while ((rc = RTGetOpt(&GetState, &ValueUnion)) != 0)
2452	{
2453	switch (rc)
2454	{
2455	case 'd':
2456	rc = RTPathAbs(ValueUnion.psz, g_szDir, sizeof(g_szDir) / 2);
2457	if (RT_SUCCESS(rc))
2458	break;
2459	RTTestFailed(g_hTest, "RTPathAbs(%s) failed: %Rrc\n", ValueUnion.psz, rc);
2460	return RTTestSummaryAndDestroy(g_hTest);
2461
2462	case 's':
2463	if (ValueUnion.u32 == 0)
2464	g_nsTestRun = RT_NS_1SEC_64 * 10;
2465	else
2466	g_nsTestRun = ValueUnion.u32 * RT_NS_1SEC_64;
2467	break;
2468
2469	case 'm':
2470	if (ValueUnion.u64 == 0)
2471	g_nsTestRun = RT_NS_1SEC_64 * 10;
2472	else
2473	g_nsTestRun = ValueUnion.u64 * RT_NS_1MS;
2474	break;
2475
2476	case 'e':
2477	g_fManyFiles = true;
2478	g_fOpen = true;
2479	g_fFStat = true;
2480	g_fFChMod = true;
2481	g_fFUtimes = true;
2482	g_fStat = true;
2483	g_fChMod = true;
2484	g_fUtimes = true;
2485	g_fRename = true;
2486	g_fDirEnum = true;
2487	g_fMkRmDir = true;
2488	g_fStatVfs = true;
2489	g_fRm = true;
2490	g_fChSize = true;
2491	g_fRead = true;
2492	g_fWrite = true;
2493	g_fSeek = true;
2494	g_fFSync = true;
2495	g_fMMap = true;
2496	break;
2497
2498	case 'z':
2499	g_fManyFiles = false;
2500	g_fOpen = false;
2501	g_fFStat = false;
2502	g_fFChMod = false;
2503	g_fFUtimes = false;
2504	g_fStat = false;
2505	g_fChMod = false;
2506	g_fUtimes = false;
2507	g_fRename = false;
2508	g_fDirEnum = false;
2509	g_fMkRmDir = false;
2510	g_fStatVfs = false;
2511	g_fRm = false;
2512	g_fChSize = false;
2513	g_fRead = false;
2514	g_fWrite = false;
2515	g_fSeek = false;
2516	g_fFSync = false;
2517	g_fMMap = false;
2518	break;
2519
2520	#define CASE_OPT(a_Stem) \
2521	case RT_CONCAT(kCmdOpt_,a_Stem): RT_CONCAT(g_f,a_Stem) = true; break; \
2522	case RT_CONCAT(kCmdOpt_No,a_Stem): RT_CONCAT(g_f,a_Stem) = false; break
2523	CASE_OPT(ManyFiles);
2524	CASE_OPT(Open);
2525	CASE_OPT(FStat);
2526	CASE_OPT(FChMod);
2527	CASE_OPT(FUtimes);
2528	CASE_OPT(Stat);
2529	CASE_OPT(ChMod);
2530	CASE_OPT(Utimes);
2531	CASE_OPT(Rename);
2532	CASE_OPT(DirEnum);
2533	CASE_OPT(MkRmDir);
2534	CASE_OPT(StatVfs);
2535	CASE_OPT(Rm);
2536	CASE_OPT(ChSize);
2537	CASE_OPT(Read);
2538	CASE_OPT(Write);
2539	CASE_OPT(Seek);
2540	CASE_OPT(FSync);
2541	CASE_OPT(MMap);
2542	#undef CASE_OPT
2543
2544	case 'q':
2545	g_uVerbosity = 0;
2546	break;
2547
2548	case 'v':
2549	g_uVerbosity++;
2550	break;
2551
2552	case 'h':
2553	Usage(g_pStdOut);
2554	return RTEXITCODE_SUCCESS;
2555
2556	case 'V':
2557	{
2558	char szRev[] = "$Revision: 76914 $";
2559	szRev[RT_ELEMENTS(szRev) - 2] = '\0';
2560	RTPrintf(RTStrStrip(strchr(szRev, ':') + 1));
2561	return RTEXITCODE_SUCCESS;
2562	}
2563
2564	default:
2565	return RTGetOptPrintError(rc, &ValueUnion);
2566	}
2567	}
2568
2569	/*
2570	* Create the test directory with an 'empty' subdirectory under it,
2571	* execute the tests, and remove directory when done.
2572	*/
2573	RTTestBanner(g_hTest);
2574	if (!RTPathExists(g_szDir))
2575	{
2576	/* The base dir: */
2577	rc = RTDirCreate(g_szDir, 0755,
2578	RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL);
2579	if (RT_SUCCESS(rc))
2580	{
2581	RTTestIPrintf(RTTESTLVL_ALWAYS, "Test dir: %s\n", g_szDir);
2582	rc = fsPrepTestArea();
2583	if (RT_SUCCESS(rc))
2584	{
2585	/* Profile RTTimeNanoTS(). */
2586	fsPerfNanoTS();
2587
2588	/* Do tests: */
2589	if (g_fManyFiles)
2590	fsPerfManyFiles();
2591	if (g_fOpen)
2592	fsPerfOpen();
2593	if (g_fFStat)
2594	fsPerfFStat();
2595	if (g_fFChMod)
2596	fsPerfFChMod();
2597	if (g_fFUtimes)
2598	fsPerfFUtimes();
2599	if (g_fStat)
2600	fsPerfStat();
2601	if (g_fChMod)
2602	fsPerfChmod();
2603	if (g_fUtimes)
2604	fsPerfUtimes();
2605	if (g_fRename)
2606	fsPerfRename();
2607	if (g_fDirEnum)
2608	vsPerfDirEnum();
2609	if (g_fMkRmDir)
2610	fsPerfMkRmDir();
2611	if (g_fStatVfs)
2612	fsPerfStatVfs();
2613	if (g_fRm \|\| g_fManyFiles)
2614	fsPerfRm(); /* deletes manyfiles and manytree */
2615	if (g_fChSize)
2616	fsPerfChSize();
2617	if (g_fRead \|\| g_fWrite \|\| g_fSeek \|\| g_fFSync \|\| g_fMMap)
2618	fsPerfIo();
2619	}
2620
2621	/* Cleanup: */
2622	g_szDir[g_cchDir] = '\0';
2623	rc = RTDirRemoveRecursive(g_szDir, RTDIRRMREC_F_CONTENT_AND_DIR);
2624	if (RT_FAILURE(rc))
2625	RTTestFailed(g_hTest, "RTDirRemoveRecursive(%s,) -> %Rrc\n", g_szDir, rc);
2626	}
2627	else
2628	RTTestFailed(g_hTest, "RTDirCreate(%s) -> %Rrc\n", g_szDir, rc);
2629	}
2630	else
2631	RTTestFailed(g_hTest, "Test directory already exists: %s\n", g_szDir);
2632
2633	return RTTestSummaryAndDestroy(g_hTest);
2634	}

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source: vbox/trunk/src/VBox/ValidationKit/utils/fs/FsPerf.cpp@ 76914

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