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: Tue Sep 8 01:28:00 2026 Auto Mode Machine = Linux oleg233-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-oleg233-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 1470 8110 333126 188798 64 8 4058 11777 780776 634890 64 16 1912 10534 1105556 681644 64 32 1759 19042 1226821 780776 64 64 1695 6356 1526887 1526887 128 4 1858 3863 368020 515822 128 8 1723 6465 752124 702889 128 16 2249 11984 1085013 643108 128 32 6512 26048 1206978 1102844 128 64 8084 69150 1123617 1436229 128 128 7893 58772 1436229 1885042 256 4 5050 4504 571502 518013 256 8 3723 6048 544547 499925 256 16 3447 13814 904732 690151 256 32 9663 13852 1306564 992545 256 64 4697 35472 172743 517265 256 128 3124 30284 131880 1391207 256 256 7972 80449 1673001 1729594 512 4 1654 1627 85275 136941 512 8 5893 11724 713021 664895 512 16 10472 20430 280540 917804 512 32 9665 15116 962649 248183 512 64 13095 23400 1286838 576535 512 128 10762 44979 1430887 327120 512 256 7504 16839 1199171 389403 512 512 10083 20898 1334001 1809465 1024 4 3618 3134 88031 111813 1024 8 8729 4046 500007 134685 1024 16 10141 8624 680357 722595 1024 32 10849 14063 574592 298888 1024 64 16795 40565 943781 165830 1024 128 11823 16357 662312 269753 1024 256 24608 36988 1635675 1336827 1024 512 23033 61745 1499217 871401 2048 4 8517 7280 320104 340818 2048 8 11895 8328 872978 767040 2048 16 15717 18727 347126 163161 2048 32 30004 37192 680670 719075 2048 64 25244 40079 870324 1149338 2048 128 33015 45830 903461 682889 2048 256 25602 62122 478393 322665 2048 512 38395 44480 503696 1508115 4096 4 6039 4355 206785 285575 4096 8 8098 5874 302016 348237 4096 16 10923 9995 638021 269472 4096 32 21638 25672 197854 647178 4096 64 17598 17373 376332 533954 4096 128 16000 28591 707782 313920 4096 256 16246 25908 266421 423141 4096 512 22763 30661 502147 294656 8192 4 4746 4616 300379 226773 8192 8 11653 16659 312231 234741 8192 16 11369 12817 300945 405684 8192 32 16900 30434 458632 629048 8192 64 22815 21430 467181 277630 8192 128 27751 45647 742033 778182 8192 256 22691 36490 902498 540189 8192 512 24322 41187 910220 824235 16384 4 4870 5226 123279 152938 16384 8 6957 10238 537724 421377 16384 16 13479 17392 395490 300680 16384 32 15308 17966 368528 326250 16384 64 19904 37247 827429 771116 16384 128 33519 42596 520275 868165 16384 256 33588 25371 1047556 586169 16384 512 31239 33073 548562 683212 32768 4 5047 5062 204479 191927 32768 8