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 7 23:52:33 2026 Auto Mode Machine = Linux oleg351-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-oleg351-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 3675 503814 592827 64 8 2623 12658 913649 735831 64 16 4097 24288 889431 754443 64 32 3728 27222 1083249 969761 64 64 5444 58130 1163036 1734015 128 4 3915 9906 566435 204148 128 8 4053 8429 723735 786271 128 16 7591 24512 1142750 895074 128 32 8602 49998 715059 606767 128 64 7600 26524 1455701 1162547 128 128 5575 32388 1471662 2066432 256 4 4405 3700 253731 361552 256 8 10801 16585 924200 792543 256 16 13375 31356 1224606 454820 256 32 14311 32715 1231629 1202660 256 64 8765 22040 1128110 757326 256 128 12122 98087 1543163 1445521 256 256 6999 26680 1128110 2000242 512 4 4413 5888 496091 395353 512 8 13440 19548 301705 293781 512 16 6192 31626 1276891 861818 512 32 21537 41127 1245780 738777 512 64 18233 39303 613951 1137555 512 128 10266 31634 1373241 1276891 512 256 9825 36358 1216149 715159 512 512 11801 31011 1689859 2132967 1024 4 3253 4226 301341 140930 1024 8 7531 12151 586439 247166 1024 16 6274 13734 155009 869284 1024 32 26219 37801 563880 554131 1024 64 17961 22614 617998 579476 1024 128 12734 31560 333672 565067 1024 256 13315 53626 495165 378551 1024 512 26063 79992 920717 331406 2048 4 5836 7439 267425 330105 2048 8 8556 11293 247642 762140 2048 16 11723 25864 324825 319449 2048 32 31117 27643 1381950 374406 2048 64 30657 49066 1159735 409028 2048 128 20975 43081 1663811 1106407 2048 256 21519 33769 1621719 1265868 2048 512 21432 62423 429629 413896 4096 4 5478 6149 167298 211320 4096 8 6925 15374 620037 234983 4096 16 15620 18860 467481 272070 4096 32 22392 23523 637311 520258 4096 64 26009 35932 504743 667210 4096 128 22942 45033 464662 361196 4096 256 45453 55711 1481431 901602 4096 512 41885 67867 636814 640901 8192 4 6271 1997 248650 267457 8192 8 10225 7412 352603 420942 8192 16 16201 16142 380195 306450 8192 32 19505 17834 730843 535700 8192 64 29720 43956 713467 499510 8192 128 27621 60997 1160848 914167 8192 256 31541 43925 823741 597781 8192 512 26929 35559 525291 262270 16384 4 6764 6533 372177 442800 16384 8 11483 10841 374328 431726 16384 16 23134 17000 336365 544352 16384 32 25327 53117 453513 302192 16384 64 30292 26597 593561 379064 16384 128 29429 20377 320770 366729 16384 256 18591 25167 426654 672528 16384 512 27034 43400 654129 446138 32768 4 4814 5232 234211 235182 32768 8 12395 12649 330242 642535 32768 16 13379 18249 709755 549919 32768 32 18257 23397 603806 500794 32768 64