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 Aug 15 20:09:58 2026 Auto Mode Machine = Linux oleg347-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-oleg347-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 6807 19838 615952 679917 64 8 8743 34727 929467 727850 64 16 11539 50195 1083249 639427 64 32 13122 79493 1330167 1105556 64 64 14215 78060 1933893 1780008 128 4 10615 16575 419822 881842 128 8 16339 29358 1082825 1000121 128 16 19530 50730 1022989 876086 128 32 25366 76056 2326073 841746 128 64 23058 105791 1391557 1373754 128 128 25749 146294 1436229 2248149 256 4 12293 17949 506767 802614 256 8 17400 33053 1084800 746272 256 16 32441 58327 1070737 921029 256 32 29875 98465 1911233 1191979 256 64 45876 112518 1463250 1114064 256 128 37350 159218 1280084 1286217 256 256 42223 158023 1766587 2305128 512 4 16677 17948 596058 652372 512 8 21676 35174 859060 847532 512 16 26063 52744 1190529 784094 512 32 34550 78190 824748 1369738 512 64 43378 122399 1193175 1071167 512 128 48233 162542 1556366 1358474 512 256 32070 147504 1992458 1506154 512 512 54970 197600 1938502 2452009 1024 4 15966 14910 775712 567306 1024 8 26989 35550 931096 850521 1024 16 36241 57095 1229309 1088213 1024 32 44103 89660 1356245 1321200 1024 64 67913 114170 1349428 1150600 1024 128 48160 93116 1796451 1261072 1024 256 63955 145701 1992279 1081363 1024 512 51294 176640 1625154 1664841 2048 4 17181 19942 737472 685177 2048 8 29739 34501 1013943 1060511 2048 16 48372 52203 1250389 1211077 2048 32 51294 82972 1689666 1149954 2048 64 82834 93799 1813827 1380173 2048 128 90739 121048 1529599 1240458 2048 256 73302 146776 1978880 1297023 2048 512 72534 156073 2327387 1602358 4096 4 17415 17549 596403 520116 4096 8 28858 31887 960584 903167 4096 16 43795 49602 1410868 1119150 4096 32 61410 85826 1482965 1228203 4096 64 71983 104431 1622149 1293781 4096 128 77827 126478 1707434 1483990 4096 256 73539 126438 1866807 1674646 4096 512 93532 133676 2075915 1521580 8192 4 17327 17958 706266 638504 8192 8 28257 33434 1106137 938590 8192 16 46856 58401 1137935 1062492 8192 32 68239 80036 1787074 1311550 8192 64 81631 109182 1698135 1471017 8192 128 78324 95017 1196586 1448140 8192 256 97824 154359 2151274 1471269 8192 512 102824 161622 1882332 1690449 16384 4 16512 18108 685899 675071 16384 8 29625 31373 1052143 883274 16384 16 42899 51491 1149024 1074702 16384 32 62755 80263 1603766 1329561 16384 64 74376 108704 1903807 1419360 16384 128 83726 115707 1760737 1279006 16384 256 103461 130889 1242536 1657256 16384 512 107345 146254 1934136 1834289 32768 4 17280 18519 750783 713961 32768 8 29487 32344 976574 809646 32768 16