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 Sep 8 01:45:35 2026 Auto Mode Machine = Linux oleg654-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-oleg654-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 3173 10088 353760 438043 64 8 6455 30532 720041 727850 64 16 5285 11745 983980 333540 64 32 6127 64779 1083249 1279447 64 64 6294 71510 1484662 1648808 128 4 8860 9705 640042 332467 128 8 5901 14420 831319 735635 128 16 7132 41871 606767 955616 128 32 16406 53822 1487977 1185654 128 64 12342 67977 1196221 1521718 128 128 18140 111782 1421023 680612 256 4 8300 8875 433869 345943 256 8 16609 16974 812329 699139 256 16 13985 41091 1243036 525621 256 32 11868 67740 1040643 1147398 256 64 8402 22463 1361224 1195962 256 128 13781 71289 1552085 1629830 256 256 16661 152006 1766587 2034350 512 4 3378 10146 291745 536628 512 8 16237 18981 825699 854615 512 16 19057 35970 153899 417326 512 32 22599 59094 593259 579804 512 64 10162 96786 1538526 1289930 512 128 18802 126696 1734911 731480 512 256 22583 76830 478515 1679288 512 512 30333 116839 543006 240592 1024 4 12405 9713 318008 180826 1024 8 17519 24144 893517 446935 1024 16 14197 24123 1178380 333206 1024 32 16326 52829 996094 842843 1024 64 25776 51924 695112 510163 1024 128 36552 52434 440066 482103 1024 256 40684 91518 1532928 1050164 1024 512 22259 111839 716567 561668 2048 4 4663 10612 354753 191868 2048 8 17729 15784 673255 434893 2048 16 23507 38222 1213986 545815 2048 32 27665 38408 754045 531101 2048 64 26302 37790 1291368 568726 2048 128 25225 64528 1633127 1398828 2048 256 47833 65970 1414491 800940 2048 512 37040 47809 443584 1596106 4096 4 10299 9533 150776 220881 4096 8 14195 12616 301931 521063 4096 16 15005 29759 812409 390542 4096 32 27139 43850 527090 651102 4096 64 32586 42824 421397 706443 4096 128 42751 47015 625363 246735 4096 256 35280 51822 540437 961767 4096 512 28913 99802 1121854 944477 8192 4 7319 10138 499873 248665 8192 8 12507 13418 484357 359329 8192 16 24178 20514 518670 626638 8192 32 26014 38082 644227 228763 8192 64 29699 41964 611624 707313 8192 128 36118 49930 501259 669600 8192 256 35642 54386 1251046 720740 8192 512 44866 62098 992000 647224 16384 4 8890 7893 635880 443134 16384 8 11894 12355 610982 291670 16384 16 19446 24842 494385 668569 16384 32 30485 42007 897556 710897 16384 64 35572 46424 894915 602401 16384 128 48797 59127 704505 690288 16384 256 45898 67217 726953 749085 16384 512 47000 63016 889079 542157 32768 4 8616 8252 325399 248137 32768 8 11490 9972 384132 316801 32768 16 17896 21442 350070 545824 32768 32 25314 39358 592292 606757 32768 64 37575 39818 659449 690069 32768 128 40760 59285 1384373 517963 32768 256 28507 59319 660019 588495 32768 512 38722 57067 725100 701355 65536 4