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 May 9 07:55:24 2025 Auto Mode Machine = Linux oleg155-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-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 16537 19827 306151 467002 64 8 17287 33280 831569 829001 64 16 17080 68604 1232453 809014 64 32 27386 108819 1562436 1638743 64 64 30376 162019 1330167 1210227 128 4 19382 24064 468962 546819 128 8 26975 31700 516318 895074 128 16 33506 87313 1254941 1278855 128 32 30874 134157 1603529 992724 128 64 40519 107014 1727352 1827299 128 128 50855 151666 1561553 2211113 256 4 19852 29854 377041 266119 256 8 30472 45204 826078 802014 256 16 46929 68066 1219045 755195 256 32 61140 89167 1652404 1325925 256 64 67051 176057 1032636 1202660 256 128 63573 198151 1422540 1662639 256 256 75851 113421 2187712 2049885 512 4 24429 30283 460457 440617 512 8 40436 52448 893368 826016 512 16 53798 71139 774759 1130370 512 32 76350 129813 907717 1600443 512 64 78347 117697 1270846 1861217 512 128 98554 172505 1635797 1417662 512 256 99338 205386 2099600 2124526 512 512 114895 236929 2370799 1842059 1024 4 23706 29865 313048 420341 1024 8 45643 41159 374132 801927 1024 16 70493 80973 1235319 1060013 1024 32 66514 95319 1561348 1372717 1024 64 110678 133875 1607514 1800216 1024 128 103663 160879 1825466 1784509 1024 256 75039 168200 1695065 2201637 1024 512 94283 182564 1673273 2146618 2048 4 29414 28671 448260 314490 2048 8 40415 51702 620982 693530 2048 16 64920 83211 634233 677931 2048 32 87252 115062 1180291 1359854 2048 64 113557 162994 1783696 1350023 2048 128 143436 184437 1496033 1873565 2048 256 143137 223458 1709505 2117935 2048 512 131198 216306 991817 1513696 4096 4 32008 31152 476453 480182 4096 8 41931 54979 753509 646253 4096 16 74353 87598 890434 1156752 4096 32 102749 115896 1311559 1112699 4096 64 130925 144280 1182795 1268092 4096 128 163252 195232 1598156 1400745 4096 256 154958 244202 1734148 1999099 4096 512 150063 217894 1974968 1881528 8192 4 30206 30727 552284 483077 8192 8 48855 47777 653577 691832 8192 16 76065 80606 688864 1166603 8192 32 102014 119758 1190491 1480014 8192 64 126279 145096 1208794 1546565 8192 128 141531 136219 1417316 1448872 8192 256 153526 191213 1474742 1638065 8192 512 145361 206753 1583923 1331834 16384 4 24732 30562 534009 414585 16384 8 48950 51414 638557 644504 16384 16 77807 82134 1124745 986387 16384 32 96044 107811 1124487 1104942 16384 64 133483 154519 1296623 1369328 16384 128 120825 171003 1501185 1263601 16384 256 143258 186353 1737235 1557282 16384 512 158741 197922 1884129 1618459 32768 4 31203 32370 470918 433210 32768 8 53233 56358 777155 764336 32768 16 75948 90889 1053536 1114248 32768 32 106072 127720 1299907 1485733 32768 64 133480 158020 1440995 1535085 32768 128 163222 192307 1632431 1654121 32768 256 165778 210103 1471134 1644148 32768 512