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 Sep 11 09:19:58 2026 Auto Mode Machine = Linux oleg634-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-oleg634-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 1822 4742 659861 481234 64 8 6786 27515 780776 260160 64 16 5787 11015 1070292 789967 64 32 4505 17066 1143223 955947 64 64 5365 22424 1204796 1690338 128 4 4161 10211 508012 524387 128 8 5235 23001 215454 761728 128 16 5322 10639 1017175 695603 128 32 6767 52053 687585 962469 128 64 6860 70448 1067750 1240443 128 128 16137 82521 1373754 1911894 256 4 3151 5602 541253 422432 256 8 7304 8275 316010 643419 256 16 15401 30025 809878 225727 256 32 11483 52805 719277 1052888 256 64 15643 20558 710708 1128110 256 128 8223 88857 1369908 1422540 256 256 23802 84183 1219045 1306564 512 4 11280 9727 102174 516743 512 8 9511 23405 555938 493242 512 16 6132 21866 1165966 368362 512 32 17769 38120 1036527 610982 512 64 19167 60504 505432 792486 512 128 29596 56768 1394645 232743 512 256 18724 76190 1689859 773364 512 512 31499 73456 1674052 1098566 1024 4 8415 7140 227405 212845 1024 8 19289 21614 471466 310963 1024 16 13139 30877 553489 308152 1024 32 28155 27559 815323 482374 1024 64 20901 50309 602734 890369 1024 128 30488 23909 1374474 877454 1024 256 31847 64982 476910 1282920 1024 512 36722 61978 594392 858340 2048 4 7734 6101 240912 192406 2048 8 9806 11686 523399 299678 2048 16 20320 24343 982739 546266 2048 32 23858 30480 247193 649335 2048 64 14182 41462 513389 248847 2048 128 21382 59153 1043759 1174964 2048 256 31371 51773 1491617 524454 2048 512 41552 67769 652244 618345 4096 4 5555 6184 188599 191017 4096 8 12931 9508 294762 348625 4096 16 10937 20354 381479 280163 4096 32 13299 22352 772274 761897 4096 64 16104 29467 372771 401053 4096 128 25263 51201 1362637 772656 4096 256 37341 51376 1077323 910442 4096 512 30131 43771 870536 687117 8192 4 6794 8702 387642 222789 8192 8 7984 15784 360691 300282 8192 16 16386 20382 364734 408987 8192 32 20448 37919 366270 624815 8192 64 29268 37812 401587 760494 8192 128 30186 38437 1007238 557961 8192 256 35953 56372 741281 1114714 8192 512 36364 55640 620561 296062 16384 4 5635 5899 347834 345086 16384 8 12932 13079 526308 501441 16384 16 25417 21271 425326 641005 16384 32 20904 33524 497358 462917 16384 64 25038 33164 837411 402296 16384 128 27745 40866 645393 322914 16384 256 36048 36097 573466 407246 16384 512 34859 57944 1126423 975937 32768 4 6151 6512 248343 239833 32768 8 10646 11418 280013 241742 32768 16 14146 15843 318655 323315 32768 32 18965 29282 919257 761781 32768 64