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 Sep 4 07:25:25 2026 Auto Mode Machine = Linux oleg259-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-oleg259-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 3112 1375 21497 388021 64 8 4345 16563 720041 450541 64 16 2315 16735 799377 666414 64 32 2587 57031 1087638 863676 64 64 7765 75470 107382 1204796 128 4 5427 9417 558771 535368 128 8 7673 8924 748976 637004 128 16 9849 50232 1133103 1009524 128 32 5370 91681 1152564 1165070 128 64 16727 100091 1185654 336005 128 128 10748 163241 1000121 2066432 256 4 7232 16484 661657 485678 256 8 13513 22678 587448 320347 256 16 13415 39005 1123389 1016025 256 32 20312 37691 1376935 1080434 256 64 14669 101903 528987 633922 256 128 9390 57105 1083705 1437779 256 256 11991 106757 306625 1361224 512 4 4833 12901 628874 552932 512 8 16981 16481 823167 941133 512 16 8240 34951 673655 621413 512 32 9823 34860 1182661 895230 512 64 7324 67042 683736 715874 512 128 38470 68012 1282994 825699 512 256 40767 76417 856319 1674052 512 512 29119 72892 2014892 1312798 1024 4 8601 4825 285478 142719 1024 8 7890 10924 502405 155790 1024 16 20896 19655 885778 225459 1024 32 18217 19020 683606 1031252 1024 64 25178 57547 1153071 607680 1024 128 48233 58148 760197 1105865 1024 256 41847 113225 1316341 1357961 1024 512 53186 125738 1022902 1108434 2048 4 9416 11252 381456 248999 2048 8 17020 19894 557577 642824 2048 16 21057 31811 314686 676116 2048 32 28418 38325 376672 847651 2048 64 39225 50847 1483118 1045410 2048 128 31114 58767 1612586 333877 2048 256 55893 70914 988393 988962 2048 512 55127 67893 337962 954776 4096 4 8451 8753 287761 475504 4096 8 9446 19532 715565 226247 4096 16 16227 22954 571427 432973 4096 32 24131 36010 1331070 686568 4096 64 31761 37245 1422668 536254 4096 128 16469 54346 381666 664089 4096 256 20621 33951 899808 478897 4096 512 35992 29039 704012 226764 8192 4 1940 8261 230183 369226 8192 8 13739 11734 218196 418496 8192 16 21990 23640 855468 551832 8192 32 26747 22943 323282 319813 8192 64 24560 39104 600371 276664 8192 128 37243 47664 1017258 819126 8192 256 32051 49802 846553 465189 8192 512 36037 78707 1071137 605118 16384 4 8998 5914 465971 354877 16384 8 9290 14989 676607 561751 16384 16 18720 21821 822910 560559 16384 32 26278 32903 847072 757859 16384 64 32814 35667 828017 356545 16384 128 31437 52122 713495 605757 16384 256 46372 45544 1191313 673734 16384 512 41969 53884 1180406 612234 32768 4 5881 7754 353862 180710 32768 8 9585 8917 602440 424214 32768 16 12000 16624 648306 493843 32768 32 18165 31293 871285 766646 32768 64 30859 42997 1044529 965494 32768 128 36632 56911 1216825 856590 32768 256