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 Aug 7 07:18:00 2026 Auto Mode Machine = Linux oleg202-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-oleg202-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 5028 10661 220788 280847 64 8 3979 21249 242312 424198 64 16 7833 32554 842003 695778 64 32 5549 52115 380864 889431 64 64 2388 68815 1452528 1460430 128 4 2978 5152 262810 165813 128 8 2759 5302 726674 636249 128 16 5722 19053 441213 727658 128 32 2804 4532 1332828 789741 128 64 6006 83770 401307 1278855 128 128 5175 19385 776042 1975201 256 4 2995 3939 570288 98383 256 8 7928 6631 853662 805021 256 16 12453 12239 879535 302905 256 32 5395 8204 1212164 889002 256 64 14446 51687 174853 492360 256 128 7478 53556 1280084 1304976 256 256 7063 23887 1224606 2030503 512 4 4711 4144 600895 582478 512 8 9731 7511 668413 190467 512 16 7366 27143 744153 349025 512 32 26629 33849 1279935 530006 512 64 14828 83278 717308 920558 512 128 37833 73850 1375881 93532 512 256 8754 84965 1078159 616950 512 512 33085 100826 1026126 2065273 1024 4 4049 6413 583808 307138 1024 8 10697 12064 334087 110775 1024 16 19851 11535 988529 513272 1024 32 15135 19135 322328 497574 1024 64 13312 17966 1288307 1040496 1024 128 24383 62630 925678 554131 1024 256 63653 78557 789544 1383774 1024 512 24308 115005 1510819 596373 2048 4 5912 8307 200611 344150 2048 8 14371 7992 286916 490774 2048 16 13784 14726 559867 122524 2048 32 25103 24583 556963 1135362 2048 64 24478 33165 801538 809851 2048 128 25145 14267 543673 236222 2048 256 33675 56996 206703 384099 2048 512 31230 59853 1629101 1465907 4096 4 8085 3995 105174 139843 4096 8 6501 11595 421438 214832 4096 16 10142 14445 333552 234807 4096 32 14122 20371 450704 396399 4096 64 26816 40430 1199392 550834 4096 128 18471 35768 976916 589102 4096 256 35007 32483 606723 405101 4096 512 29468 35708 421573 432984 8192 4 4391 4126 170591 264086 8192 8 12093 6300 407155 250680 8192 16 14266 12818 749577 723868 8192 32 19072 41234 1044375 537426 8192 64 66696 45451 697195 728179 8192 128 24668 25104 403705 440663 8192 256 68379 37644 771594 714832 8192 512 20060 73344 679881 1025792 16384 4 4693 4436 317944 321382 16384 8 18386 20455 678933 1022659 16384 16 17006 14037 570055 351717 16384 32 18688 30280 617959 647491 16384 64 28887 34421 930429 493554 16384 128 45244 53130 1023863 630472 16384 256 29043 47350 930744 633319 16384 512 25602 37446 761976 610249 32768 4