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 Aug 7 10:53:18 2026 Auto Mode Machine = Linux oleg155-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-oleg155-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 4744 14266 633392 65780 64 8 5946 27419 969761 551422 64 16 9603 41052 1083249 735831 64 32 6101 56634 1421755 913649 64 64 5575 50355 1279447 1638743 128 4 4808 8037 1231904 609522 128 8 11657 27520 1040839 649331 128 16 7469 45229 985435 978253 128 32 11217 73697 1185654 1000121 128 64 11961 56265 1220700 2326073 128 128 10451 73515 1521718 1642783 256 4 10389 17746 161009 649647 256 8 12045 21652 917096 789628 256 16 15337 33433 1588832 1007446 256 32 19591 35446 1790149 1610276 256 64 12245 57294 454627 1398455 256 128 21785 39119 1600674 1153561 256 256 15030 75250 1694118 2205688 512 4 6691 9996 820650 1007827 512 8 11971 18081 279154 631277 512 16 16124 38066 704368 849208 512 32 14116 64071 927315 884172 512 64 28746 33812 1174254 1496706 512 128 37429 102933 1506154 1434711 512 256 31570 114083 1605228 715159 512 512 26902 83294 1718254 1729323 1024 4 9297 14249 872995 223815 1024 8 18008 28252 1349004 623651 1024 16 23049 20268 1351126 799390 1024 32 28266 21069 1267398 1657133 1024 64 35754 51861 1418039 991495 1024 128 55809 93015 330972 587482 1024 256 49070 97403 1236742 1793451 1024 512 41737 113112 395674 1570483 2048 4