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: Sat Aug 15 17:18:34 2026 Auto Mode Machine = Linux oleg211-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-oleg211-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 4472 13408 524487 190541 64 8 2909 12939 610350 420873 64 16 3729 24445 818885 659861 64 32 2905 23818 28156 929467 64 64 4164 59881 1210227 1679761 128 4 4298 6353 254947 613002 128 8 8171 17819 766076 382167 128 16 7593 28901 1040839 579270 128 32 5589 36699 1111981 971174 128 64 7919 63740 831319 735635 128 128 9950 74942 1229084 2066432 256 4 6689 9357 541253 410953 256 8 6146 13573 891956 220308 256 16 6916 20578 815414 340783 256 32 10784 37091 1213534 434571 256 64 13325 52642 1148625 1066483 256 128 12658 62624 1347557 1300235 256 256 14761 73985 1479379 1729594 512 4 6836 9361 274095 311283 512 8 11397 17591 769761 1062161 512 16 9946 22553 1533034 857687 512 32 10889 32761 895230 698412 512 64 7670 21771 555363 1267097 512 128 26930 85387 1254513 461248 512 256 14992 44817 1605228 264344 512 512 17598 68057 449094 1803387 1024 4 5311 6697 166776 391134 1024 8 10588 9807 204436 325701 1024 16 9749 9732 425800 799985 1024 32 12098 23975 1055584 936987 1024 64 25750 48005 1135091 283574 1024 128 19995 45677 623651 1196434 1024 256 25549 67342 819211 748538 1024 512 22365 26281 1018052 1462960 2048 4 4515 5570 173296 238167 2048 8 6205 11330 760184 333877 2048 16 6560 8781 272628 806657 2048 32 22434 28717 1562145 994573 2048 64 13002 13058 859010 571602 2048 128 18415 37942 1322992 1080657 2048 256 34242 50722 374602 375568 2048 512 30808 70936 1604753 1607456 4096 4 3243 4214 153835 171696 4096 8 5864 6686 172281 216009 4096 16 7371 14559 464398 379507 4096 32 24801 38075 801868 424007 4096 64 21826 31944 730504 516908 4096 128 25729 51321 808053 835564 4096 256 22336 75098 452592 542451 4096 512 41032 62177 647593 581898 8192 4 3664 1796 167261 258902 8192 8 5504 6179 211766 189682 8192 16 9185 15110 543238 240355 8192 32 10722 17485 547811 512802 8192 64 27987 31727 742900 540189 8192 128 17863 25925 631522 414473 8192 256 29742 26833 484849 542732 8192 512 26304 43092 932806 576904 16384 4 4550 3791 168242 255632 16384 8 7528 9254 478072 458641 16384 16 10021 9489 391501 300481 16384 32 15278 21939 404422 662919 16384 64 22548 38405 536092 637632 16384 128 23850 29681 520177 353310 16384 256 25992 38291 577732 437690 16384 512 32677 39297 846718 588186 32768 4 5543 5495 326846 296994 32768 8 9499 10892 468958 414586 32768 16