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: Tue Aug 5 11:00:16 2025 Auto Mode Machine = Linux oleg149-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-oleg149-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 3662 13943 253048 243411 64 8 6246 28245 369844 378715 64 16 5452 28661 215644 460591 64 32 7229 49574 877797 760859 64 64 6008 79399 1049372 1526887 128 4 7992 12264 259131 230238 128 8 11596 23323 181264 228183 128 16 9992 46211 561107 526444 128 32 14101 76884 864797 707520 128 64 14545 83718 1152564 1142750 128 128 7438 49591 1048974 1749872 256 4 7562 15749 253431 240597 256 8 14628 27142 405827 371561 256 16 19128 43925 894929 207133 256 32 12882 67244 184307 1044693 256 64 21826 66804 1525622 807442 256 128 21328 40200 1099237 1117543 256 256 25487 79946 1327564 1868008 512 4 11169 14154 270334 201569 512 8 16009 21228 216309 415309 512 16 21295 53691 664073 572081 512 32 14480 34179 893368 659788 512 64 43738 90972 451549 962649 512 128 24767 92052 1140576 974885 512 256 35553 62347 1471074 1514652 512 512 45767 119825 1273861 2032051 1024 4 11934 15721 288527 155076 1024 8 20920 30905 145351 327041 1024 16 21924 36697 756315 546447 1024 32 32793 38901 859026 672369 1024 64 38656 53452 1104443 938625 1024 128 31969 89198 1333507 1120288 1024 256 57677 86253 1602715 1265531 1024 512 35685 121919 1472995 668809 2048 4 13384 17398 155587 221957 2048 8 17812 21904 273540 225352 2048 16 28233 34555 526640 368148 2048 32 33337 38873 834557 722158 2048 64 42100 39619 794055 917943 2048 128 35036 82487 1088186 721855 2048 256