Changeset 77247 in vbox for trunk/src/VBox/Additions/linux

Timestamp:

Feb 11, 2019 1:29:32 AM (6 years ago)

Author:

vboxsync

Message:

linux/vboxsf: Updated kstat->blksize comment with current performance numbers. bugref:9172

File:

• trunk/src/VBox/Additions/linux/sharedfolders/utils.c (modified) (1 diff)

trunk/src/VBox/Additions/linux/sharedfolders/utils.c

@@ -357 +357 @@
 
         /*
-         * FsPerf shows the following numbers for sequential file reads:
-         *   4096 KB = 2254 MB/s
-         *   2048 KB = 2368 MB/s
-         *   1024 KB = 2208 MB/s
-         *    512 KB = 1908 MB/s
-         *    256 KB = 1625 MB/s
-         *    128 KB = 1413 MB/s
-         *     64 KB = 1152 MB/s
-         *     32 KB =  726 MB/s
-         *      4 KB =  145 MB/s
+         * FsPerf shows the following numbers for sequential file access against
+         * a tmpfs folder on an AMD 1950X host running debian buster/sid:
+         *
+         * block size = r128600    ----- r128753 -----
+         *               reads      reads     writes
+         *    4096 KB = 2254 MB/s  4953 MB/s 3668 MB/s
+         *    2048 KB = 2368 MB/s  4908 MB/s 3541 MB/s
+         *    1024 KB = 2208 MB/s  4011 MB/s 3291 MB/s
+         *     512 KB = 1908 MB/s  3399 MB/s 2721 MB/s
+         *     256 KB = 1625 MB/s  2679 MB/s 2251 MB/s
+         *     128 KB = 1413 MB/s  1967 MB/s 1684 MB/s
+         *      64 KB = 1152 MB/s  1409 MB/s 1265 MB/s
+         *      32 KB =  726 MB/s   815 MB/s  783 MB/s
+         *      16 KB =             683 MB/s  475 MB/s
+         *       8 KB =             294 MB/s  286 MB/s
+         *       4 KB =  145 MB/s   156 MB/s  149 MB/s
+         *
          */
         if (S_ISREG(kstat->mode))