Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Fri Oct 24 09:03:41 2025 Auto Mode Machine = Linux oleg133-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg133-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 7319 20935 463774 467002 64 8 4712 29238 1013707 560635 64 16 13719 43451 763021 818885 64 32 16714 69330 809014 718114 64 64 14914 96670 1204796 1679761 128 4 5999 20240 673778 684081 128 8 18934 37702 739689 604036 128 16 30784 60919 350482 940549 128 32 19918 52759 1579934 819893 128 64 14750 101185 1165070 1306873 128 128 30202 144638 1561553 1436229 256 4 14357 25206 523315 567575 256 8 22420 31147 778183 606700 256 16 26984 21872 820398 689708 256 32 23871 84654 1023775 886067 256 64 25058 119853 1430119 1248819 256 128 42688 131815 766517 812944 256 256 49392 167541 1598292 2034350 512 4 19519 17383 648041 328220 512 8 30033 43955 911184 682649 512 16 37179 62797 788992 687237 512 32 44727 101206 1005938 1060063 512 64 72255 147971 1086890 1158418 512 128 66056 164208 1195832 1190529 512 256 73594 99301 1057454 876593 512 512 58641 203171 2167411 3459188 1024 4 18646 23562 640389 650969 1024 8 35238 44876 1000969 876558 1024 16 54856 54844 748016 1062110 1024 32 69721 105101 1715375 1357961 1024 64 76189 135343 1253344 1440391 1024 128 84663 135771 1638796 1253344 1024 256 85690 158756 1319577 1385560 1024 512 111804 181177 1681790 1769073 2048 4 22800 23708 780774 590178 2048 8 37369 45181 931278 872268 2048 16 59207 74974 1436250 1177057 2048 32 79164 116720 1284033 1358134 2048 64 93850 154484 1670606 1306890 2048 128 101723 124421 1593737 1497076 2048 256 113298 171840 1844994 1574169 2048 512 108405 176766 1790388 1926510 4096 4 22657 25397 640494 553211 4096 8 38813 47996 1067218 921676 4096 16 58190 74675 1265383 1082141 4096 32 84086 108091 1264173 1164278 4096 64 94635 143352 1973154 1562686 4096 128 114212 175719 1692630 1350426 4096 256 126677 199552 2008917 1587523 4096 512 124722 195887 1945888 1656241 8192 4 23420 27807 717894 745204 8192 8 39625 40535 909112 806608 8192 16 58352 65226 1516463 1051084 8192 32 78334 105362 1634480 1137295 8192 64