Changeset 23811 in vbox

Timestamp:

Oct 15, 2009 5:52:07 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

53556

Message:

AsyncCompletion Stress test: Bugfixes. Correctly calculate the write chance for growing files and adjust the range of start offsets if the file is growing to let it grow more quickly

File:

• trunk/src/VBox/VMM/testcase/tstPDMAsyncCompletionStress.cpp (modified) (6 diffs)

trunk/src/VBox/VMM/testcase/tstPDMAsyncCompletionStress.cpp

@@ -83 +83 @@
 #define SEGMENT_SIZE_MAX (TEST_PATTERN_SIZE)
 /** Maximum number of active tasks. */
-#define TASK_ACTIVE_MAX (512)
+#define TASK_ACTIVE_MAX (1)
 /** Maximum size of a transfer. */
 #define TASK_TRANSFER_SIZE_MAX (_1M)
@@ -168 +168 @@
     {
         size_t cbCompare; 
-        unsigned iSeg = off / pTestFile->cbFileSegment;;
+        unsigned iSeg = off / pTestFile->cbFileSegment;
         PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[iSeg];
         uint8_t *pbTestPattern;
@@ -196 +196 @@
     {
         size_t cbFill; 
-        unsigned iSeg = off / pTestFile->cbFileSegment;;
+        unsigned iSeg = off / pTestFile->cbFileSegment;
         PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[iSeg];
         uint8_t *pbTestPattern;
@@ -228 +228 @@
     {
         offMax =   (pTestFile->cbFileMax - pTestFile->cbFileCurr) < pTestTask->DataSeg.cbSeg
-                 ? pTestFile->cbFileCurr + pTestTask->DataSeg.cbSeg
+                 ? pTestFile->cbFileMax - pTestTask->DataSeg.cbSeg
                  : pTestFile->cbFileCurr;
     }
@@ -234 +234 @@
         offMax = pTestFile->cbFileMax - pTestTask->DataSeg.cbSeg;
 
-    pTestTask->off = RTRandU64Ex(0, offMax) & ~511;
+    uint64_t offMin;
+
+    /*
+     * If we reached the maximum file size write in the whole file
+     * otherwise we will enforce the range for random offsets to let it grow
+     * more quickly.
+     */
+    if (pTestFile->cbFileCurr == pTestFile->cbFileMax)
+        offMin = 0;
+    else
+        offMin = (offMax - pTestTask->DataSeg.cbSeg) < 0 ? 0 : (offMax - pTestTask->DataSeg.cbSeg);
+
+
+    pTestTask->off = RTRandU64Ex(offMin, offMax) & ~511;
 
     /* Set new file size of required */
     if ((uint64_t)pTestTask->off + pTestTask->DataSeg.cbSeg > pTestFile->cbFileCurr)
         pTestFile->cbFileCurr = pTestTask->off + pTestTask->DataSeg.cbSeg; 
+
+    AssertMsg(pTestFile->cbFileCurr <= pTestFile->cbFileMax,
+              ("Current file size (%llu) exceeds final size (%llu)\n",
+              pTestFile->cbFileCurr, pTestFile->cbFileMax));
 
     /* Allocate data buffer. */
@@ -344 +361 @@
          * The minimum chance is 33 percent.
          */
-        iWriteChance = (int)(((float)100.0 / pTestFile->cbFileMax) * (float)pTestFile->cbFileCurr);
+        iWriteChance = 100 - (int)(((float)100.0 / pTestFile->cbFileMax) * (float)pTestFile->cbFileCurr);
         iWriteChance = RT_MAX(33, iWriteChance);
 
-        /* Wait a random amount of time. (1ms - 10s) */
-        RTThreadSleep(RTRandU32Ex(1, 10000));
+        /* Wait a random amount of time. (1ms - 100ms) */
+        RTThreadSleep(RTRandU32Ex(1, 100));
     }