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: Mon Sep 14 02:29:15 2026 Auto Mode Machine = Linux oleg328-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-oleg328-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 4665 12134 620221 129816 64 8 5832 25346 852702 620221 64 16 8496 34244 1083249 926260 64 32 4486 35205 1255511 831569 64 64 8343 50669 1679761 1304314 128 4 7064 17889 299792 537512 128 8 6080 11462 992724 481150 128 16 8484 37046 1217930 1102844 128 32 15488 64911 2166499 1032829 128 64 14626 80252 566435 1175271 128 128 18980 94257 1642783 1598754 256 4 10793 15599 842278 547044 256 8 13377 21057 400678 551823 256 16 16985 44607 686182 826078 256 32 28757 25308 408918 797843 256 64 14911 68614 1471270 1062263 256 128 17624 82236 1673001 1437779 256 256 24233 115322 1686137 2639446 512 4 13372 17864 582478 517116 512 8 14613 23575 1446306 1273106 512 16 26454 48211 1137555 939486 512 32 30601 64096 884172 1319250 512 64 29210 86023 1940253 1541840 512 128 48052 82342 2474613 1417662 512 256 40839 64703 1434711 1620980 512 512 37719 128485 1089647 2169601 1024 4 12920 12406 344650 237858 1024 8 23505 29564 933525 808113 1024 16 27276 36060 843505 943781 1024 32 25408 55303 1105865 1045817 1024 64 38221 67239 864212 383383 1024 128 43266 43334 1208894 1610528 1024 256 56600 106845 1868347 1623311 1024 512 27281 76053 1047091 1244266 2048 4 15186 14697 665793 627286 2048 8 25819 31989 913938 888876 2048 16 36984 43073 1089981 955200 2048 32 41331 75161 711098 422093 2048 64 49631 102977 1289623 1330781 2048 128 61993 107153 1693997 1169684 2048 256 40870 91380 1738569 867774 2048 512 68851 93992 1034831 1877250 4096 4 15544 18746 453548 678488 4096 8