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 4 09:34:39 2026 Auto Mode Machine = Linux oleg327-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-oleg327-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 3583 9011 727850 587635 64 8 3390 20970 673098 809014 64 16 2976 31682 24335 1105556 64 32 8236 69348 1232453 1279447 64 64 7469 83447 404998 821391 128 4 6729 9600 301138 324039 128 8 9301 10554 735635 615814 128 16 7798 19479 985435 650117 128 32 6632 55508 870405 1032829 128 64 11895 23988 1209698 219956 128 128 10365 65306 1487977 1684006 256 4 5770 9244 682691 550409 256 8 11606 24746 897923 686620 256 16 16143 49250 2114473 1008392 256 32 21229 30277 1332507 1089202 256 64 7076 45592 1334162 1212164 256 128 12339 75250 1514860 1455317 256 256 20935 108889 1662639 2015259 512 4 6369 11216 143540 544106 512 8 14487 28221 353797 616950 512 16 16592 28130 1132755 683518 512 32 12656 33695 1365383 243346 512 64 29737 87431 823167 1267097 512 128 18157 64112 1399189 1471074 512 256 27780 110821 1689859 1551867 512 512 45278 105694 1764853 1910902 1024 4 5162 7942 508954 257742 1024 8 14452 18077 219133 445221 1024 16 15401 22511 924880 541554 1024 32 29090 36151 655939 554131 1024 64 28976 90891 1380217 837910 1024 128 44107 113037 245387 311527 1024 256 20983 41668 170870 543817 1024 512 23828 85348 1054547 988529 2048 4 7564 7330 210698 457768 2048 8 5507 13328 521905 634092 2048 16 21237 19102 496361 203558 2048 32 30946 32613 1216221 1000015 2048 64 17700 32238 404654 701115 2048 128 17754 69923 441669 776680 2048 256 36589 100856 1611376 1016944 2048 512 31344 59884 479407 432071 4096 4 5200 6635 305328 198961 4096 8 11363 11754 402039 200784 4096 16 21664 16592 862884 387110 4096 32 23001 30233 510655 557972 4096 64 25604 41831 1042986 639279 4096 128 31325 41026 1639800 924404 4096 256 34768 63548 992952 515744 4096 512 28982 40610 432439 610258 8192 4 2118 8954 222433 133967 8192 8 10728 11110 553209 410090 8192 16 13830 17655 462043 486779 8192 32 24292 27535 503625 360914 8192 64 32916 41003 490686 340442 8192 128 20358 43472 873519 316403 8192 256 32472 58543 615525 1366039 8192 512 35068 63680 707794 556218 16384 4 7120 6990 300938 264578 16384 8 10690 12591 456493 383054 16384 16 14949 20031 872275 667647 16384 32 26900 29252 387028 539586 16384 64 34593 35309 642311 607380 16384 128 37937 58023 517942 562657 16384 256 34337 59075 1037622 1057112 16384 512 34312 47778 499876 497117 32768 4 7811 8250 273828 445380 32768 8 12452 12836 337776 324772 32768 16 18710 20072 399327 370955 32768 32 20974 30117 494269 1040614 32768 64 26693 50751 1413445 455142 32768 128 36161 51002 736011 446139 32768 256