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 2 02:17:59 2026 Auto Mode Machine = Linux oleg104-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-oleg104-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 5870 3512 500060 581273 64 8 6312 8903 926260 565358 64 16 3135 42128 703068 743988 64 32 7591 50507 1163036 926260 64 64 5290 43179 1484662 1421755 128 4 4528 5307 370050 559353 128 8 9012 21079 383258 212554 128 16 6381 27124 955616 722760 128 32 5647 9431 1093856 864797 128 64 12433 81792 1065630 1391557 128 128 4503 28107 1421023 637004 256 4 7005 5341 359615 226776 256 8 10048 18195 828628 701422 256 16 18103 35759 532397 865358 256 32 22888 49883 1256123 951219 256 64 16707 76828 1266495 1752173 256 128 20233 90391 1267990 563997 256 256 29588 84541 1598292 2152625 512 4 3892 3433 632020 531186 512 8 6441 10797 664895 499089 512 16 7669 29126 920953 832420 512 32 18610 47783 411568 404132 512 64 30600 35242 702295 1143004 512 128 18941 64329 1619757 403449 512 256 27816 64949 422832 700463 512 512 46289 83281 1463057 2047551 1024 4 5024 4786 573288 502699 1024 8 8443 12160 233627 672791 1024 16 26574 41609 522450 823926 1024 32 18172 53442 360080 997946 1024 64 28819 27917 1068983 879610 1024 128 38917 60094 572677 503406 1024 256 35271 59746 155503 434282 1024 512 21565 36873 1370965 1537317 2048 4 5562 4846 303683 227531 2048 8 6907 12581 107213 284880 2048 16 19769 26453 1004458 799747 2048 32 22195 29707 1118509 539812 2048 64 29999 34644 764514 373933 2048 128 23389 55872 548744 837323 2048 256 29846 64894 1454489 1271112 2048 512 27502 67886 1510502 597111 4096 4 7489 13853 235916 239084 4096 8 6827 8707 286633 214553 4096 16 8733 12517 457035 468271 4096 32 21594 28047 149412 1595 4096 64 15453 24291 713574 361553 4096 128 26067 32450 1325627 417780 4096 256 30601 46095 1198305 447452 4096 512 42406 50808 1458169 382337 8192 4 4655 4878 100913 301753 8192 8 6081 8556 280270 343467 8192 16 13688 12752 368015 310973 8192 32 14356 21985 780197 493817 8192 64 22480 28958 661288 428651 8192 128 27977 40023 1320015 536964 8192 256 39148 23160 910534 451621 8192 512 21135 37047 331456 413550 16384 4 5264 6230 319432 349323 16384 8 9623 10545 340256 258790 16384 16 11426 14985 693556 729833 16384 32 15092 25974 916689 596477 16384 64 27961 35269 886636 849565 16384 128 26399 34509 706635 1041443 16384 256 31574 66127 360723 680506 16384 512 33533 47099 387163 292743 32768 4 5375 7230 285684 148404 32768 8 11054 12754