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: Sun Sep 6 19:45:41 2026 Auto Mode Machine = Linux oleg140-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-oleg140-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 11251 22914 852702 560635 64 8 13431 35298 821391 610350 64 16 11216 51994 998622 780776 64 32 12003 78037 1188789 1722886 64 64 6512 74590 1452528 2006158 128 4 12324 21419 656477 558771 128 8 17772 32545 1526043 1377278 128 16 22816 67942 1852520 633247 128 32 24577 83770 1281909 1266785 128 64 26068 123765 1424795 1471662 128 128 24729 119842 1710838 3468030 256 4 12915 19583 773697 556687 256 8 21889 30683 921029 1185399 256 16 19194 47922 1048775 1122215 256 32 25728 86775 1740810 1213534 256 64 47841 107376 1598292 1763685 256 128 39252 150599 2152625 1481420 256 256 54629 172051 2509882 2019049 512 4 17850 20561 960926 522399 512 8 26161 34106 996139 881269 512 16 41843 50772 1021732 1210664 512 32 44498 86488 1674052 1560891 512 64 55792 144108 2347475 1605228 512 128 36681 126353 1672748 1537424 512 256 72347 120558 1778004 2198475 512 512 62523 127653 1977778 2524058 1024 4 18225 20717 1076755 784640 1024 8 25883 41086 902151 755649 1024 16 35514 54165 1741810 986485 1024 32 56564 100069 1370965 1210598 1024 64 77647 119764 1497127 1410588 1024 128 75321 110190 2155236 1703807 1024 256 78927 179970 1903117 2060128 1024 512 61891 123643 2295784 3001782 2048 4 18304 19918 658747 825494 2048 8 28382 33067 1261036 816548 2048 16 49652 55369 1407538 1631886 2048 32 61763 77393 2188069 1207501 2048 64 79367 109775 1861789 1267362 2048 128 84897 149643 1703741 1705432 2048 256 79435 160188 1802788 1921339 2048 512 91826 147817 1919192 1581414 4096 4 19075 20700 687255 671460 4096 8 29703 35714 1323380 781976 4096 16 50237 55565 1490427 1070543 4096 32 74154 82211 2114496 1175672 4096 64 86726 92959 1838440 1402689 4096 128 101398 116327 2477696 1795028 4096 256 103827 170731 1861750 2156702 4096 512 115536 137141 2416362 2076918 8192 4 19365 19984 843850 678820 8192 8 31589 33659 1449912 1102411 8192 16 49082 56430 1587875 1171975 8192 32 67114 84766 1513124 1503392 8192 64 93697 130308 1601568 1536124 8192 128 97999 132201 2145632 1922566 8192 256 98293 141688 2321948 1942127 8192 512 97157 158002 2379185 2068766 16384 4 18198 19168 835233 796186 16384 8 30811 36791 1295278 877881 16384 16 51264 57578 1304251 1060996 16384 32 69143 86584 1850241 1389063 16384 64 82472 103729 1922771 1639699 16384 128 95353 118908 1809607 1740755 16384 256 98272 125080 2377605 2058775 16384 512 105484 139605 2109201 1704191 32768 4 18829 20449 903693 802273 32768 8 32378 35771 1048001 1152471 32768 16 50498 59742 1661821 1145889 32768 32 68788 84906 2082509 1548733 32768 64 82832 110136 1975781 1353934 32768 128 108826 125345 2166754 1798449 32768 256 105731 137943 1959835 1708169 32768 512 97788 114324 2219915 1629199 65536 4 18895 19881 833886 708098 65536 8 31197 34552 1296533 862782 65536 16 49674 51182 1481072 1155916 65536 32