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 14 17:16:02 2025 Auto Mode Machine = Linux oleg356-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-oleg356-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 9815 27338 620221 703068 64 8 13047 28880 926260 792299 64 16 10437 66811 1304314 1279447 64 32 14489 97407 1421755 1279447 64 64 18093 98624 1780008 1933893 128 4 18296 27820 731625 706589 128 8 19704 38646 948860 1142750 128 16 25152 71546 1231904 927549 128 32 27515 94108 1048974 1319723 128 64 36497 122606 1278855 1579934 128 128 23854 118102 1967960 1642783 256 4 20243 27777 719277 761623 256 8 30074 44091 996229 1219045 256 16 30588 76462 1325925 731528 256 32 47824 103137 1407621 1112909 256 64 53113 125425 1622442 1471270 256 128 42328 143975 1497953 1881098 256 256 49969 153747 2081678 1956506 512 4 21548 26810 669247 608730 512 8 35310 48826 1120344 973559 512 16 48402 51581 1171691 1169140 512 32 57762 102771 1125040 1426135 512 64 55502 115444 1339827 1399189 512 128 74885 140396 1667552 1387437 512 256 81946 171691 1556366 1945526 512 512 74516 176430 1848401 2207515 1024 4 25340 29028 769320 770010 1024 8 40026 48297 1002839 1011817 1024 16 57196 72628 928479 1219189 1024 32 75661 104758 1383774 1406431 1024 64 82189 131703 1454537 1495042 1024 128 97813 145914 1605111 1633188 1024 256 104618 182626 1675884 1865101 1024 512 92137 172941 2073055 1858644 2048 4 25172 28163 810768 743150 2048 8 42448 49719 1132070 1039087 2048 16 61157 75532 1262704 1232272 2048 32 86530 108941 1448358 1317109 2048 64 97208 133498 1368956 1468162 2048 128 100412 160200 1618968 1443248 2048 256 121607 168751 1701042 1350023 2048 512 124649 183464 1988500 1785550 4096 4 25837 28216 782439 784690 4096 8 45000 48239 1049998 1008101 4096 16 65333 74117 1256407 1342512 4096 32 94874 103413 1310359 1342512 4096 64 105206 133220 1450903 1257602 4096 128 116794 155416 1347355 1507031 4096 256 111419 170044 1699495 1498095 4096 512 114021 183840 1830214 1807683 8192 4 25663 27499 801565 782435 8192 8 42871 48175 1100610 1070703 8192 16 65796 75823 1211479 1278987 8192 32 86439 108496 1448872 1439223 8192 64 104561 134814 1487833 1534341 8192 128 114831 158572 1658304 1555949 8192 256 107383 163017 1718863 1607562 8192 512 118564 179538 1560685 1715944 16384 4