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 Aug 19 21:59:49 2026 Auto Mode Machine = Linux oleg441-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-oleg441-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 1707 11424 226948 118997 64 8 1325 4977 752329 651849 64 16 3996 22939 913649 889431 64 32 3179 21087 1029254 1226821 64 64 2654 36904 1255511 1492919 128 4 3662 6754 589446 290230 128 8 4498 6593 468962 531131 128 16 4976 21747 985435 859260 128 32 4765 59726 726674 934004 128 64 7824 39145 1266785 319222 128 128 7030 44646 166430 1885042 256 4 3063 3468 532133 329489 256 8 7671 6969 376512 686182 256 16 10639 29823 783292 833776 256 32 10045 19226 748353 955451 256 64 5297 18923 486559 1126926 256 128 3507 44615 1523457 1339154 256 256 13290 58527 1123389 615393 512 4 3593 3646 552932 70126 512 8 4151 7536 664073 515131 512 16 14490 11410 1196499 643960 512 32 9938 15534 110083 463338 512 64 10405 55699 815044 215032 512 128 7333 30735 1595686 1411141 512 256 10668 79147 1429934 1506154 512 512 7498 35578 964378 1344020 1024 4 5121 4978 149661 525647 1024 8 3545 6440 345482 186999 1024 16 18799 27238 598117 498325 1024 32 14423 29746 247522 550227 1024 64 19291 16788 747366 934134 1024 128 17942 32974 1383774 1171629 1024 256 18855 23151 608024 1302766 1024 512 13445 28982 511195 1381993 2048 4 4300 2879 257903 175326 2048 8 4944 13149 335023 205418 2048 16 10337 12799 973826 260499 2048 32 14185 19129 1182403 593973 2048 64 24713 36693 278787 950760 2048 128 26341 42107 582810 632133 2048 256 29648 39240 1098765 330003 2048 512 43477 56585 1109408 1576480 4096 4 6229 6986 256642 153933 4096 8 6975 9867 487914 309553 4096 16 13397 18365 332332 395979 4096 32 23529 24184 1072816 398828 4096 64 26143 40382 649134 500742 4096 128 29450 33275 388098 595348 4096 256 31963 53609 1642465 522457 4096 512 18303 23099 274711 706066 8192 4 5213 5229 292237 159311 8192 8 7570 8125 310878 181094 8192 16 14903 14608 638208 306885 8192 32 13675 16066 389575 374575 8192 64 23956 36243 800314 548870 8192 128 21177 29255 552915 338246 8192 256 34306 47436 550391 874275 8192 512 38580 41170 409025 894929 16384 4 5927 6601 331243 186916 16384 8 12691 10177 397245 499284 16384 16 15547 16599 186103 376178 16384 32 16944 20447 377086 321589 16384 64 20864 26861 471279 303531 16384 128 22293 29708 752456 644582 16384 256 29129 28254 554525 519614 16384 512 32704 43197 600895 495551 32768 4 4155 4408 285594 275516 32768 8 7858 10603 352461 198654 32768 16