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 Jan 16 02:06:02 2026 Auto Mode Machine = Linux oleg428-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-oleg428-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 3059 16364 476959 298990 64 8 3642 32420 571375 388021 64 16 3987 28009 566551 581273 64 32 11847 64717 1599680 952555 64 64 10355 34349 1421755 1119387 128 4 8372 6283 191889 152053 128 8 5943 18675 414314 189318 128 16 19456 43154 702889 515822 128 32 12398 111992 662962 1048974 128 64 20145 69150 1172704 859260 128 128 7151 94606 1421023 1508887 256 4 10580 10618 255969 165603 256 8 8205 30053 217673 136611 256 16 25308 28570 364746 618227 256 32 12489 85077 891956 1052888 256 64 24344 92990 1178892 1036624 256 128 12005 132172 1019886 1881098 256 256 25679 175827 1354356 1642294 512 4 5120 14297 122372 105981 512 8 14184 21065 352404 411253 512 16 33558 58615 895230 436143 512 32 43148 49079 863551 314520 512 64 47818 62332 1222379 956645 512 128 24711 74778 1171691 598217 512 256 37495 100411 1463057 1496706 512 512