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: Wed May 21 07:58:18 2025 Auto Mode Machine = Linux oleg150-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-oleg150-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 25590 35030 666414 866463 64 8 32389 62502 592827 983980 64 16 37382 101456 1330167 1204796 64 32 49111 113464 2067979 1304314 64 64 37581 134702 1336792 2662899 128 4 25321 43258 677178 836500 128 8 42287 57169 1000121 1254941 128 16 56764 103387 1196221 1421023 128 32 56312 116665 1111981 1878447 128 64 88464 166275 1346196 2248149 128 128 69338 167311 1967960 1778862 256 4 31769 30498 850282 1066483 256 8 54607 54516 947860 1044693 256 16 64563 90171 1817419 1173737 256 32 80401 144557 1639786 2310087 256 64 96206 187004 1942349 1673001 256 128 107333 221856 1600674 1752173 256 256 127935 268582 2114473 2699161 512 4 32094 29566 807383 790153 512 8 49254 65732 984720 1216149 512 16 85279 91753 1164070 1185272 512 32 113300 152338 1924603 793657 512 64 135063 208214 1619757 1614885 512 128 148104 232617 1746197 1459080 512 256 157500 269215 1848401 2265742 512 512 173733 269486 2572435 2196227 1024 4 32141 31131 971534 864212 1024 8 57454 64703 1139005 1497127 1024 16 89652 100828 1354535 1495042 1024 32 126781 111508 1665486 1762539 1024 64 129915 253468 1665486 1831694 1024 128 211005 274670 1635675 1549519 1024 256 224704 249145 2028027 2328140 1024 512 221552 331816 1875690 1969440 2048 4 34894 40821 1026668 784124 2048 8 65337 70913 1151804 1154436 2048 16 86651 112121 1402711 1524712 2048 32 114708 148870 1635926 1684365 2048 64 154813 220787 1596106 1506793 2048 128 153614 218479 1884251 1747411 2048 256 178241 208747 1889224 1759581 2048 512 188965 249665 1870302 1992189 4096 4 34934 35537 903784 888316 4096 8 57478 66459 1129303 1233760 4096 16 77413 93663 1292126 1457180 4096 32 125606 146526 1416802 1613314 4096 64 147725 198007 1801994 1768603 4096 128 168648 222826 1756488 1586936 4096 256 180005 240898 1934712 1723881 4096 512 191195 298086 1864376 1856920 8192 4 31766 37104 831777 918591 8192 8 56882 61483 1195919 1230922 8192 16 84677 101889 1400562 1390586 8192 32 118984 149270 1421950 1511128 8192 64 147388 192268 1482185 1639081 8192 128 187117 259199 1566091 1741514 8192 256 200685 284265 1690116 1874630 8192 512 215216 274494 1875039 2119557 16384 4 33666 37044 964838 1078192 16384 8 58560 66820 1214536 1238572 16384 16 94523 103015 1337350 1254215 16384 32 124572 138653 1469689 1463929 16384 64 150586 185402 1548021 1624581 16384 128 155504 224063 1641853 1628817 16384 256 189202 242406 1897185 1846116 16384 512 189544 266962 2006126 2061431 32768 4 33647 36850 922032 864592 32768 8 61399 63170 1218043 1335333 32768 16 91118 105629 1534588 1744640 32768 32 138321 154290 1694125 1612909 32768 64 149099 185697 1778274 1741876 32768 128 160441 235485 1644738 1916839 32768 256 195725 253510 1838628 1653444 32768 512 209513 237764 1992452 1950019 65536 4 33459 37297 794482 927667 65536 8 54284 64117 1281674 1255667 65536 16