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: Thu Jun 5 07:14:01 2025 Auto Mode Machine = Linux oleg221-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg221-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 12926 13799 454354 306151 64 8 18878 20101 548044 441646 64 16 21776 62198 799377 222989 64 32 14821 103212 901377 666414 64 64 26444 126274 1492919 1526887 128 4 13303 24024 293563 312169 128 8 12790 31881 217373 561107 128 16 31394 43819 297632 337695 128 32 23391 97634 723735 148643 128 64 51613 144638 498114 921183 128 128 24931 169960 1827299 1755594 256 4 18292 14501 329489 308829 256 8 26402 48949 585845 456366 256 16 47922 86314 580461 880256 256 32 31211 113625 1208072 1180188 256 64 17684 82419 1292410 1622442 256 128 59244 171010 723153 1084800 256 256 50283 149884 1579483 2097948 512 4 18982 24346 330748 272633 512 8 32717 39494 505432 505908 512 16 31905 70271 606667 533827 512 32 64468 86456 614654 929322 512 64 85937 132611 1038532 1038532 512 128 79587 158863 1282994 1286067 512 256 84195 166991 1803387 1625889 512 512 66520 97339 1640796 2141475 1024 4 21192 26602 190339 355049 1024 8 31230 35427 695225 586759 1024 16 56992 63535 524044 876737 1024 32 36314 52030 957884 913471 1024 64 96358 98242 966941 1089317 1024 128 85985 146727 1475525 1012771 1024 256 94308 137137 1462960 1099918 1024 512 95727 84009 1872419 1821595 2048 4 22527 22606 190549 400616 2048 8 27697 41326 557722 500351 2048 16 39435 67328 609353 677022 2048 32 53270 72675 676383 952130 2048 64 74305 128700 1105837 1125839 2048 128 96864 120371 1031724 899393 2048 256 84266 127181 1166190 1369829 2048 512 91810 166259 1539744 1719429 4096 4 23398 23390 222451 247029 4096 8 33333 41122 524387 405867 4096 16 47779 65044 716102 700767 4096 32 75916 110529 899196 817434 4096 64 93466 78081 772969 881615 4096 128 85513 113730 1328497 831519 4096 256 100136 151586 1285648 1350002 4096 512 104811 109639 1647663 1294073 8192 4 24164 25333 220280 268192 8192 8 34938 45675 536864 446138 8192 16 56749 75489 794099 678646 8192 32 71982 108724 692879 1041715 8192 64 90127 109542 960471 1125596 8192 128 110091 136396 967503 1172975 8192 256 156243 113698 1254151 1391093 8192 512 130670 217786 1642999 1387330 16384 4 22672 22976 285922 298058 16384 8 35817 41328 592318 535407 16384 16 53738 61913 680116 512030 16384 32 70837 95453 727884 792038 16384 64 80513 108246 1070433 998832 16384 128 103236 121517 815973 1197144 16384 256 105154 138610 1125648 956392 16384 512 123265 157328 1193734 1414976 32768 4