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: Sat Feb 28 14:01:14 2026 Auto Mode Machine = Linux oleg309-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-oleg309-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 11242 21404 621657 470274 64 8 16124 42495 1255511 789967 64 16 10624 52719 942521 926260 64 32 15069 84206 1780008 1017549 64 64 21163 96984 1518251 2923952 128 4 13877 24366 513847 579270 128 8 24647 37239 1142750 739689 128 16 23831 63274 1755594 864797 128 32 31730 99923 1065630 1067750 128 64 23678 102892 1391557 1102844 128 128 22939 127377 1508887 2035099 256 4 14376 21955 921029 511109 256 8 27974 38208 934659 794889 256 16 34791 71445 1292410 1019886 256 32 35300 102850 1292410 1729594 256 64 49602 122603 1398455 1881098 256 128 38823 173189 2441400 2015259 256 256 46368 178783 1686137 1911233 512 4 19649 24497 927315 570107 512 8 32003 42619 1467055 833713 512 16 46114 68891 1153441 1051242 512 32 64215 83133 1759070 1165966 512 64 36951 102933 1399189 1429934 512 128