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 16:48:56 2026 Auto Mode Machine = Linux oleg402-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-oleg402-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 1596 4591 587635 133033 64 8 1366 23927 877797 674790 64 16 3990 30287 1049372 855419 64 32 5120 58986 1279447 1033216 64 64 5997 42441 1255511 1780008 128 4 1717 7729 637004 576161 128 8 2375 5329 895074 684081 128 16 3515 22881 1057236 940549 128 32 5575 47777 1281909 1059322 128 64 4913 78377 306117 1346196 128 128 5801 22527 573699 2004703 256 4 3348 4547 375853 208299 256 8 4931 8231 721210 697776 256 16 7302 8999 1248819 1099237 256 32 9796 52565 1306564 1076103 256 64 7665 30335 353110 1437779 256 128 8928 59231 1489641 1356067 256 256 8616 83632 1802167 2114473 512 4 6744 11084 416275 567695 512 8 7412 19508 793657 746481 512 16 11897 29796 688338 924123 512 32 21463 51472 824748 702295 512 64 17111 66399 984720 1105920 512 128 26558 46026 1422357 915847 512 256 18570 73964 1008300 1610042 512 512 27577 89617 1201856 593423 1024 4 8169 6802 73158 584126 1024 8 6621 9039 894262 135181 1024 16 15303 17544 964336 364666 1024 32 21463 28549 848337 1098792 1024 64 9873 21295 529993 739898 1024 128 29245 62302 1216082 658554 1024 256 31218 45925 1114185 1043783 1024 512 26607 38250 910181 1264041 2048 4 7086 5762 72150 158512 2048 8 11003 14685 835612 283498 2048 16 12793 21886 233575 384031 2048 32 24872 21956 1047067 564317 2048 64 25673 27377 901470 1230155 2048 128 28695 39963 1529327 930875 2048 256 40624 71887 780774 1451540 2048 512 24850 41718 439477 1390225 4096 4 5285 8007 382379 322646 4096 8 10076 10153 341020 167368 4096 16 22148 13182 480021 228940 4096 32 24734 30503 652239 624590 4096 64 18126 22625 318583 494387 4096 128 22405 30385 1597561 468067 4096 256 26044 31016 671697 345242 4096 512 21238 64234 746502 390355 8192 4 8174 6082 228113 113765 8192 8 2572 9824 523084 338510 8192 16 9216 17954 603503 321293 8192 32 19838 41792 628128 636765 8192 64 35249 48395 718795 938564 8192 128 33096 37252 808525 357981 8192 256 37091 38949 579639 551646 8192 512 21907 51068 867411 698073 16384 4 6880 6865 496274 398104 16384 8 9810 15653 426099 311583 16384 16 16842 15109 509026 345478 16384 32 30537 33670 761166 380766 16384 64 32329 35232 518630 363805 16384 128 26645 40461 704570 421496 16384 256 30078 42764 801638 730189 16384 512 33030 43684 377625 325854 32768 4 6865 7600 199123 374105 32768 8 9262 11821 580303 414192 32768 16 16885 16578 621901 522190 32768 32 20837 27165 493687 510493 32768 64 25644 31566 578491 493247 32768 128 29646 38521 1093755 810104 32768 256 30981 38955 1147784 1031182 32768 512