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 Jul 14 12:23:05 2025 Auto Mode Machine = Linux oleg408-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-oleg408-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 14999 21760 413101 268756 64 8 21255 34170 380864 621657 64 16 22898 76568 674790 496362 64 32 23970 91684 1452528 504762 64 64 37164 88132 799377 1285575 128 4 15872 23374 303350 226929 128 8 28608 37494 566435 670413 128 16 34925 63274 1015251 595328 128 32 41897 105005 1663139 1421023 128 64 49250 158191 1939522 1833539 128 128 51282 198121 2166499 2166499 256 4 20282 25638 394496 454820 256 8 33298 49951 828628 582035 256 16 61186 79578 713067 958864 256 32 70874 113830 987979 775373 256 64 91360 116891 1775350 1471270 256 128 105054 221627 1855098 2325094 256 256 81735 199365 2582316 3078337 512 4 23065 27581 516122 278720 512 8 44218 47132 508544 743123 512 16 63499 78539 1084694 1024169 512 32 74799 151532 1815584 1296159 512 64 75050 154954 1179413 1111070 512 128 109919 225651 2107844 1255246 512 256 136976 246050 1961520 1917728 512 512 146537 236381 2811557 1862832 1024 4 21211 29210 432054 475643 1024 8 39716 40281 772364 741047 1024 16 64937 71238 727244 976172 1024 32 92153 110119 1268896 854752 1024 64 122886 174508 1683768 1577404 1024 128 125986 185641 1446698 1648862 1024 256 131401 258455 1777125 1432225 1024 512 163475 202527 2120127 2160657 2048 4 24742 28212 343613 332520 2048 8