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 9 12:19:15 2026 Auto Mode Machine = Linux oleg242-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-oleg242-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 3035 7093 546928 470274 64 8 2058 6258 725882 129254 64 16 3466 4727 821391 503814 64 32 3505 55032 1083249 913649 64 64 2789 60379 1460430 1421755 128 4 4082 2708 155353 435487 128 8 3814 8548 688467 604036 128 16 5355 45587 1007629 739689 128 32 8867 48411 1421023 814915 128 64 5364 38671 1220700 1065630 128 128 14206 80192 1598754 1579934 256 4 6434 5713 544547 214199 256 8 10296 5876 831194 28522 256 16 16997 22559 891956 480248 256 32 12948 38431 1089202 856386 256 64 22920 43826 1190657 1062263 256 128 19060 55991 423098 1829808 256 256 17430 45390 271228 2081678 512 4 8324 4745 106756 523418 512 8 8239 17879 694797 630536 512 16 8658 28560 470134 412279 512 32 10346 44248 360086 313876 512 64 23965 54001 607353 720921 512 128 12382 31463 445184 304055 512 256 18244 60562 1458090 759685 512 512 25548 57533 1463057 1683237 1024 4 4105 2774 67954 359297 1024 8 8449 17251 612795 301003 1024 16 22138 18684 1004011 101627 1024 32 25149 12335 907680 666629 1024 64 28324 29668 938625 540941 1024 128 46400 86788 822506 536146 1024 256 38529 61508 540396 1259223 1024 512 49504 100658 964336 586119 2048 4 5315 6088 174002 697302 2048 8 14381 13622 329421 400485 2048 16 20127 22350 603742 878244 2048 32 26017 41210 812071 465029 2048 64 15229 32284 672149 313824 2048 128 39124 39316 379534 517565 2048 256 26360 28952 1430271 208004 2048 512 19888 47960 689577 886583 4096 4 6987 7612 565428 215738 4096 8 12157 1438 512116 550093 4096 16 17438 24889 719099 436715 4096 32 27744 32524 628704 291323 4096 64 28619 36210 692574 464612 4096 128 32324 56887 820009 704271 4096 256 26419 45139 1518621 713336 4096 512 46018 50202 627648 720245 8192 4 9974 9422 391324 287956 8192 8 16159 13206 350746 468487 8192 16 19827 22661 520162 484241 8192 32 19588 31607 637462 406634 8192 64 26433 34137 716069 552800 8192 128 36734 39596 1013866 487007 8192 256 29805 48079 925644 686497 8192 512 34616 48359 891793 612300 16384 4 5633 7608 358136 347952 16384 8 10407 11702 410452 249163 16384 16 15150 15545 284202 661713 16384 32 22563 31287 1039191 668407 16384 64 26270 35512 603772 655464 16384 128 28812 43295 834806 825718 16384 256 34376 43714 855072 782460 16384 512 34755 50030 673464 304529 32768 4 5980 7295 300208 156767 32768 8 10791 18165 441473 317731 32768 16 18298 20780 601789 385442 32768 32 23139 36499 1030572 661111 32768 64