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: Thu May 1 15:52:52 2025 Auto Mode Machine = Linux oleg315-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg315-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 3973 10256 312204 299323 64 8 6373 26946 294723 491815 64 16 11764 44385 695778 679917 64 32 5356 76831 1066042 639427 64 64 7061 88161 71187 1492919 128 4 6054 20952 148849 104494 128 8 16182 39519 566435 401307 128 16 13796 38836 707520 627328 128 32 20921 86316 864797 831319 128 64 17089 93845 1421023 785122 128 128 30390 112982 1885042 1827299 256 4 6770 14829 322754 348752 256 8 19600 40726 534251 500157 256 16 28712 59339 671589 810490 256 32 31687 93909 1023775 1123389 256 64 29186 27318 1262029 1202660 256 128 12863 114133 1683493 1272498 256 256 27432 71751 2081678 1829808 512 4 15894 22183 182596 353622 512 8 28740 32124 179783 518740 512 16 26662 69209 588544 315629 512 32 31017 76247 1089094 366977 512 64 42380 89107 1413929 1293037 512 128 34067 51214 1380303 240484 512 256 43210 101326 185226 1619757 512 512 48701 117484 2544997 1497750 1024 4 15404 13561 325800 328215 1024 8 27851 29862 605880 518728 1024 16 33383 48655 813933 771116 1024 32 46528 92153 267635 800582 1024 64 40193 117783 1147832 1172909 1024 128 72748 122914 1301187 1352402 1024 256 51393 149142 1572783 1514549 1024 512 76940 157487 1659694 368609 2048 4 18074 16737 252001 348182 2048 8 25752 30119 353221 321061 2048 16 35706 27052 335127 750421 2048 32 22629 76415 1063794 1041228 2048 64 67121 45333 867774 681102 2048 128 78848 61936 1319537 277885 2048 256 60764 123411 1414491 1014902 2048 512 37752 100946 1615011 1284801 4096 4 12992 20391 237203 177209 4096 8 28661 18537 218035 469346 4096 16 17261 28978 681637 707899 4096 32 64600 45428 882203 585229 4096 64