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: Tue Jun 10 21:37:07 2025 Auto Mode Machine = Linux oleg260-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg260-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 7195 15834 284418 169701 64 8 10299 43777 561808 292475 64 16 18924 47613 743988 1087638 64 32 18201 83215 1204796 1638743 64 64 18615 102074 1421755 942521 128 4 12452 15176 188190 225689 128 8 16542 38907 643108 322482 128 16 32167 76327 731625 785122 128 32 38507 118834 1579934 1114289 128 64 48816 152528 2004703 1111981 128 128 43507 123197 1471662 2166499 256 4 25895 35457 502969 532397 256 8 35545 49108 852984 826078 256 16 48165 99339 1286217 944525 256 32 47886 71626 1422540 1600674 256 64 69359 92990 1707589 1766587 256 128 73585 207815 2097948 2170027 256 256 63352 193928 2266207 1208072 512 4 25391 31564 299392 491436 512 8 38980 37146 710192 879825 512 16 57963 74364 1198502 1105351 512 32 60778 105135 949875 1071167 512 64 79601 128385 1101383 1174254 512 128 100628 168472 1402845 1334001 512 256 94992 181439 1736314 1875849 512 512 70923 163209 1182661 1595686 1024 4 27117 24437 341662 425420 1024 8 41175 33798 486472 340875 1024 16 54182 80737 1220575 981750 1024 32 100127 110704 963471 1368780 1024 64 112690 182277 1117955 1342258 1024 128 131788 172220 1602715 1628234 1024 256 133140 187956 1651398 1551198 1024 512 109051 220256 2019445 2170484 2048 4 29067 36611 453802 435754 2048 8 46122 54562 669060 647280 2048 16 63127 68394 888876 1034333 2048 32 82640 118265 951708 1218291 2048 64 89463 152496 1492654 1125839 2048 128 132599 147421 1272054 1330781 2048 256 117856 203356 1629410 1526066 2048 512 132546 220476 2052157 2142232 4096 4 25781 26933 452246 465140 4096 8 42034 53840 720486 769472 4096 16 61385 81929 925051 769059 4096 32 95763 109668 1158390 946611 4096 64 106889 128393 1510343 1181493 4096 128 117525 187169 1416802 1548600 4096 256 136165 202302 1660884 1636987 4096 512 153863 187263 1682188 1681365 8192 4 26904 28701 375176 444827 8192 8 47235 55118 465372 742836 8192 16 67917 73991 702871 780640 8192 32 74165 103561 1102128 1500372 8192 64 126279 146823 1692614 1659986 8192 128 132808 194538 1556231 1658304 8192 256 171047 221590 1608842 1513924 8192 512 152216 212647 1890514 1640724 16384 4 32371 30983 415151 413778 16384 8 46121 49953 505305 673906 16384 16 78103 87436 864865 1150390 16384 32 103921 124284 1196186 1341213 16384 64 110689 150459 1347155 1497913 16384 128 146160 193655 1499547 1599846 16384 256 167286 217805 1582530 1660981 16384 512 175024 210957 1860108 1947676 32768 4 28762 31617 490216 533220 32768 8 43655 58598 815652 831040 32768 16 82615 77471 588757 718406 32768 32 90729 126391 724026 765660 32768 64 116924 180951 845779 1052584 32768 128 141252 165253 1565153 961610 32768 256 158274 180143