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: Sun Aug 16 22:47:41 2026 Auto Mode Machine = Linux oleg117-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-oleg117-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 8648 17467 1119387 969761 64 8 12561 34318 1210227 1049372 64 16 14041 62692 1066042 1049372 64 32 16584 66185 1304314 1101022 64 64 19535 77385 1991276 735831 128 4 12634 18393 735635 978253 128 8 19118 39467 1663139 702889 128 16 27164 52847 2326073 2058509 128 32 30793 83328 2238774 1319723 128 64 28706 109973 971174 2511022 128 128 34952 102167 1663139 2843510 256 4 16256 16957 1128110 992545 256 8 26893 29910 1778290 831194 256 16 31722 54816 2285501 917880 256 32 25341 98573 1829808 1718521 256 64 47743 94496 2613746 1967260 256 128 49853 131283 1652404 2187712 256 256 58675 121907 2613746 2639446 512 4 13042 20695 930933 910797 512 8 28127 37940 907717 859060 512 16 39071 59273 2081286 1163439 512 32 59674 89167 2722449 2285029 512 64 72530 123405 2350044 2638816 512 128 72153 157108 1952602 2337255 512 256 59862 191897 2521095 2722449 512 512 78743 143944 2613128 3684733 1024 4 20236 22420 691865 1011817 1024 8 31714 36038 1400926 823768 1024 16 43470 66518 1439908 1673273 1024 32 60098 105983 1657133 1872419 1024 64 67582 127029 1506051 2236023 1024 128 76733 125291 2579861 2114908 1024 256 92544 162769 2798378 2510493 1024 512 93371 184604 2490116 3074849 2048 4 19792 20596 1130283 763630 2048 8 32782 34185 1444461 1363523 2048 16 47069 61856 1877250 1699359 2048 32 58089 87141 1812296 1476490 2048 64 75569 132805 2137434 2153510 2048 128 88512 151841 1844994 1681397 2048 256 109331 166220 2518447 2338157 2048 512 115282 192100 2544558 1696674 4096 4 19582 20475 953652 840551 4096 8 34252 39937 1139338 1181087 4096 16 51115 69295 1826129 1643565 4096 32 73878 90955 2223699 1746666 4096 64 95391 130586 1710323 1803508 4096 128 96159 169746 1815515 2053091 4096 256 113629 151044 2379876 1728912 4096 512 120088 150638 2424889 1977696 8192 4 19855 20923 954574 859513 8192 8 34176 35125 1433160 1210753 8192 16 52039 57987 1940701 1349833 8192 32 77658 102643 1993624 1879758 8192 64 90271 122559 2252387 2140019 8192 128 105353 149825 2139486 2264859 8192 256 116243 156357 2371631 1987398 8192 512 130825 143845 2496020 2463627 16384 4 18745 20163 959745 983015 16384 8 32027 33501 1141580 1123035 16384 16 48058 58372 1394758 1370010 16384 32 72419 79367 1913562 1751537 16384 64 87970 124652 1830040 1689069 16384 128 110838 125883 2051033 1834926 16384 256 105607 153506 1803196 1695905 16384 512 110391 147823 2660987 2113807 32768 4 18476 18748 863723 782219 32768 8 30284 34394 1288246 1153923 32768 16 53596 56603 1459325 1670039 32768 32 71883 83507 1925702 1597202 32768 64 88634 108579 2266742 1705964 32768 128 108290 128821 1847550 1732828 32768 256 106776 142064 2427615 2033517 32768 512 107491 133156 2039976 1935383 65536 4 18754 19757 901955 878783 65536 8 31426 36265 1400945 1141283 65536 16 49510 57227 1632526 1588092 65536 32 71633 82776 1904947 1576326 65536 64 86910 109532 2252861 1858905 65536 128 103691 130854 1867925 1713405