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 11 07:55:42 2026 Auto Mode Machine = Linux oleg458-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-oleg458-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 4 900 11896 329852 130892 64 8 5161 16971 780776 621657 64 16 3394 21291 809014 407457 64 32 2070 56337 1330167 1013707 64 64 1715 59483 1648808 1484662 128 4 1747 3015 27959 490828 128 8 2995 9797 790905 601330 128 16 2373 13096 735635 785122 128 32 7094 65940 1009524 914904 128 64 4946 56686 1085013 416888 128 128 2397 32595 419822 1905110 256 4 4714 1885 204296 153659 256 8 4913 11599 495084 566377 256 16 12549 19478 924200 782721 256 32 14635 25036 305839 556398 256 64 6367 54260 439912 1185399 256 128 13919 107204 530031 566377 256 256 18524 77438 1066483 822913 512 4 6928 12656 229805 56444 512 8 14795 23604 146698 242768 512 16 8915 15904 977103 749608 512 32 19612 37440 422832 885996 512 64 5844 39433 1347393 1023680 512 128 23118 41394 1279935 1130370 512 256 13327 54700 1326585 458393 512 512 7859 80769 1030064 104171 1024 4 4790 3430 265764 122724 1024 8 7038 7159 97376 153799 1024 16 9427 15101 399241 283574 1024 32 9767 22977 202891 978172 1024 64 15034 28738 1416169 752472 1024 128 19197 45767 1495042 1347311 1024 256 27971 49209 1514549 494937 1024 512 23914 68156 211649 684478 2048 4 6534 4609 190617 85680 2048 8 6363 9640 285476 300076 2048 16 8878 11455 196963 258711 2048 32 15538 31216 653883 208722 2048 64 21251 24202 1324624 341727 2048 128 32683 27955 293785 230739 2048 256 43610 69563 661079 293795 2048 512 27216 39148 1531781 174717 4096 4 6948 7409 152555 176415 4096 8 6588 8970 366372 253245 4096 16 10233 10217 309693 304150 4096 32 22366 15649 542656 421697 4096 64 32372 48223 1175028 1024758 4096 128 44097 39680 976861 629580 4096 256 41033 22558 702113 514755 4096 512 33310 49941 561951 430607 8192 4 6789 5557 222167 170262 8192 8 9406 10195 472956 395326 8192 16 14300 14742 235281 319762 8192 32 17402 20651 553369 552284 8192 64 25554 23187 741281 393164 8192 128 26566 35245 785800 668025 8192 256 23150 30974 580864 261299 8192 512 33145 44107 467016 224901 16384 4 5414 5291 242122 195941 16384 8 10177 7012 254547 227072 16384 16 14304 12985 653868 333992 16384 32 16724 24336 355031 337855 16384 64 22529 24936 562850 663348 16384 128 24366 26700 985680 584912 16384 256 21130 31053 745307 477345 16384 512 18926 45786 780417 221234 32768 4