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 21:43:50 2026 Auto Mode Machine = Linux oleg604-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-oleg604-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 2911 11863 576282 418903 64 8 5674 20235 725882 566551 64 16 2247 17191 926260 426897 64 32 1929 25651 205256 929467 64 64 6604 67585 1210227 1599680 128 4 6458 10786 486381 23983 128 8 8253 13739 673778 743788 128 16 9776 11602 426492 731625 128 32 8769 45695 398921 1032829 128 64 9569 34490 1067750 670413 128 128 3703 48652 1487977 1802755 256 4 7418 3691 259119 308829 256 8 5859 8618 800221 472222 256 16 12410 25125 833776 286345 256 32 20163 27346 1093639 973645 256 64 7527 67706 1142514 1123389 256 128 24244 84574 1662639 1053922 256 256 26498 55701 1588832 1952947 512 4 7579 12998 579804 605128 512 8 9629 21396 407971 340178 512 16 26039 11029 585176 857687 512 32 6719 21214 493696 512549 512 64 27239 86342 515626 1350783 512 128 34987 72533 920953 1497750 512 256 22043 98554 751971 1610042 512 512 17671 63993 736750 644927 1024 4 6635 11255 632467 236327 1024 8 10873 21886 570168 587482 1024 16 12519 18404 1044799 445961 1024 32 14049 53349 252588 725647 1024 64 27029 48985 1166221 677781 1024 128 27356 41829 1235319 1393200 1024 256 30599 45414 795098 1071116 1024 512 30650 97070 1815435 1027060 2048 4 6781 5929 376540 369669 2048 8 13701 13257 222152 439207 2048 16 11859 25735 719376 505533 2048 32 24862 33135 239028 213957 2048 64 27920 30801 1520663 585671 2048 128 28297 53615 794128 924662 2048 256 36381 73974 1687011 525673 2048 512 53370 41278 1022513 977594 4096 4 7153 7650 331876 336538 4096 8 11418 13098 521047 498229 4096 16 17667 21521 605568 762742 4096 32 28158 27871 650486 619187 4096 64 31363 28922 1057040 564815 4096 128 37543 61426 1686316 693301 4096 256 55309 58321 695180 346943 4096 512 33414 45956 898255 768337 8192 4 7987 7546 224875 161562 8192 8 11394 29449 627978 521520 8192 16 19956 23996 508311 659321 8192 32 45296 39809 396723 362254 8192 64 37614 43187 417997 435723 8192 128 39178 36825 632976 709753 8192 256 25215 50869 529158 441830 8192 512 33982 41328 982863 640994 16384 4 8688 7043 218395 152356 16384 8 10750 19523 344795 280308 16384 16 18709 17219 793950 751971 16384 32 17344 22315 749053 996283 16384 64 20272 25018 377407 564812 16384 128 25010 34598 765430 707792 16384 256 21889 34342 619737 811483 16384 512 22512 50973 1086099 918638 32768 4 7959 6490 145659 135185 32768 8 9135 16417 820536 562010 32768 16 18908 20728 641516 392872 32768 32 24586 25323 720206 516567 32768 64 25867 27569 673628 287554 32768 128