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: Mon Sep 14 19:31:13 2026 Auto Mode Machine = Linux oleg244-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-oleg244-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 3225 9689 811459 226183 64 8 3221 30131 735831 703068 64 16 5151 38674 1087638 877797 64 32 5850 49961 1232453 1105556 64 64 9660 89246 1304314 390278 128 4 6478 7925 659704 584313 128 8 9974 15912 983630 809997 128 16 7036 39493 969421 776042 128 32 14823 49706 1155043 1076312 128 64 10910 96234 1030846 1391557 128 128 20066 88829 222601 1967960 256 4 5779 13054 648079 559005 256 8 12938 21224 930608 842278 256 16 10493 31219 1243036 920240 256 32 24705 40384 1067543 1195962 256 64 23289 53951 1540948 1015065 256 128 31932 35006 1306564 1662639 256 256 13107 34128 1532153 1814348 512 4 10391 9456 184510 323864 512 8 16538 15788 601568 548694 512 16 25315 40470 1140576 1011625 512 32 20743 29861 1302447 946526 512 64 19137 57411 294748 621233 512 128 21541 102564 1506154 1273861 512 256 31653 78697 1759070 1055894 512 512 32576 107450 1575781 2207515 1024 4 11019 9343 250730 174920 1024 8 6385 15552 430107 764119 1024 16 26044 30683 707129 921705 1024 32 28561 41351 781072 865605 1024 64 16219 77352 686776 722109 1024 128 15774 32812 968686 1444266 1024 256 14791 41014 910181 112936 1024 512 24140 44504 956178 569487 2048 4 3949 6474 132530 227476 2048 8 12842 15539 223139 699916 2048 16 18708 36637 381371 883937 2048 32 18916 13121 282872 263617 2048 64 24040 73203 1176251 203216 2048 128 30004 38167 1337828 916376 2048 256 23364 49012 200018 1400653 2048 512 37683 34966 531003 1362658 4096 4 4862 6510 267450 337172 4096 8 15210 18739 480303 357475 4096 16 19611 22729 769334 490002 4096 32 23337 27150 425868 519676 4096 64 39592 29809 282815 290909 4096 128 45809 65876 825962 606723 4096 256 33806 34494 597855 790140 4096 512 41792 80578 878010 809805 8192 4 6564 7812 293588 320311 8192 8 11859 10748 552648 257116 8192 16 18952 24881 606132 575976 8192 32 34587 41675 973976 634109 8192 64 39032 43800 749495 695529 8192 128 40257 50151 1466246 910220 8192 256 34133 58405 815781 1230570 8192 512 36371 67812 636576 585725 16384 4 10601 8163 689588 397765 16384 8 12363 12710 166326 453109 16384 16 18516 17947 479891 439698 16384 32 27584 34827 659528 571387 16384 64 27182 48403 1415238 1358097 16384 128 39333 41755 805509 1037685 16384 256 31826 49206 1203034 979736 16384 512 43940 58747 988473 1069933 32768 4 7273 8224 388412 310250 32768 8 12430 14272 691541 655492 32768 16 26496 29908 554328 434884 32768 32 30273 31566 1430794 706068 32768 64 27564 41811 359369 549382 32768 128 25454 38968 1107656 567311 32768 256 33424 64703 595740 627825 32768 512 35211 43438 803295 743862 65536 4