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: Wed Sep 9 01:15:35 2026 Auto Mode Machine = Linux oleg447-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-oleg447-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 2525 5743 491815 496362 64 8 3676 18697 842003 720041 64 16 1562 20901 1183548 842003 64 32 973 13625 528618 1087638 64 64 3812 65299 1392258 524487 128 4 4917 5594 520321 503723 128 8 5270 14719 707520 666253 128 16 2556 10612 1024942 940549 128 32 4704 29780 495814 992724 128 64 6259 16426 1172704 902598 128 128 7475 60637 1440082 1778862 256 4 7130 4275 544547 532133 256 8 3382 4925 785010 267179 256 16 8720 24767 1195962 937924 256 32 6907 29750 1260547 203329 256 64 11279 68196 1230218 1066483 256 128 12033 55761 524593 1224606 256 256 9109 54238 549283 423933 512 4 3759 8668 96804 245797 512 8 7558 15042 836310 522526 512 16 7021 11160 719954 557092 512 32 9372 33804 1191189 718990 512 64 9635 14525 1361057 667582 512 128 19581 46230 927716 1286067 512 256 10200 37131 695697 1410215 512 512 13653 22951 1227971 1700565 1024 4 3468 6275 229851 145538 1024 8 9644 5371 852716 775152 1024 16 16197 21787 1099636 174091 1024 32 10818 29071 675436 255109 1024 64 16171 35827 838074 652254 1024 128 34550 76355 1015885 275639 1024 256 25107 79127 1027060 781641 1024 512 27102 96514 1617808 1276817 2048 4 4546 13027 190494 197606 2048 8 13435 11685 238200 335520 2048 16 14057 18948 600241 501461 2048 32 14162 19451 235781 246661 2048 64 28891 25185 883483 711569 2048 128 28460 73761 1590196 301710 2048 256 26920 37663 1354493 406185 2048 512 26357 32388 1114735 1305301 4096 4 4472 6494 191098 205818 4096 8 11498 9125 232528 675473 4096 16 10711 12705 674360 401926 4096 32 23687 17686 584392 286915 4096 64 17707 43892 494800 665788 4096 128 39310 53563 634650 606637 4096 256 19923 25724 927949 797957 4096 512 31762 55623 491122 782439 8192 4 1696 4829 168626 128260 8192 8 9352 8694 289072 392903 8192 16 9585 13552 338890 230514 8192 32 11257 16820 329802 373585 8192 64 18463 28669 741489 470424 8192 128 21573 38435 216285 509547 8192 256 33199 22926 484132 332656 8192 512 29992 34059 632731 301955 16384 4 5562 6506 164906 159168 16384 8 7819 8448 202411 224801 16384 16 13373 21450 358976 516766 16384 32 28137 21122 691156 669722 16384 64 36996 45439 191216 355455 16384 128 34164 64851 601821 719675 16384 256 33059 33647 651840 337328 16384 512 26001 42610 489236 221399 32768 4 7437 6390 163587 220921 32768 8 7312 8606 243523 349935 32768 16