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: Tue Jun 3 16:19:46 2025 Auto Mode Machine = Linux oleg346-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-oleg346-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 17694 34651 889431 752329 64 8 20433 48342 1279447 1392258 64 16 19655 75919 1330167 1879725 64 32 28006 99243 2133730 1484662 64 64 23213 103570 1049372 1768283 128 4 22907 33674 901083 836500 128 8 28388 65377 1040839 1684006 128 16 38988 86903 1206978 1557024 128 32 45781 148478 1504659 1939522 128 64 43655 137068 1997245 1710838 128 128 40506 186815 1363288 1778862 256 4 21372 32177 817898 885337 256 8 37597 51424 962301 1304976 256 16 55422 94888 1600674 1662639 256 32 63584 116853 1479379 1384034 256 64 66858 191165 1334162 2000242 256 128 84962 189045 2065659 1778290 256 256 78646 196339 2247235 2097948 512 4 28995 29814 984720 946526 512 8 40378 49579 1042566 1276891 512 16 49192 83226 1438555 1358474 512 32 84794 139132 1438555 1910902 512 64 91038 167984 1459080 1430887 512 128 93654 185643 1662389 1875849 512 256 104344 169925 1889050 2132967 512 512 117401 257282 2524058 2265742 1024 4 31979 34852 968031 803728 1024 8 47772 53043 1037480 1071116 1024 16 71869 103561 1503942 1490373 1024 32 95363 136900 1397280 1707193 1024 64 115549 175463 1514549 1892218 1024 128 112266 211129 1707193 1896395 1024 256 135003 215256 1718120 2056183 1024 512 139774 231724 2546213 1786736 2048 4 32372 33165 831165 844484 2048 8 46636 51618 1247303 1225591 2048 16 75010 84040 1501525 1397008 2048 32 96118 125598 1466157 1635926 2048 64 132487 176352 1648801 1586379 2048 128 127443 164868 1575323 1558461 2048 256 156659 218474 1853753 1807720 2048 512 154799 187578 2021729 2211731 4096 4 32503 34388 1037757 1038572 4096 8 47672 59437 1020678 1178737 4096 16 76430 70581 1539303 1420786 4096 32 103568 127093 1415751 1583280 4096 64 141789 167828 1665715 1739944 4096 128 144362 197932 1796530 1717505 4096 256 155517 217549 1726133 1767147 4096 512 153718 234109 1923018 1897111 8192 4 31122 35069 753010 873919 8192 8 52862 59097 1174498 1196461 8192 16 68374 87690 1322555 1257409 8192 32 100212 117296 1585750 1531195 8192 64 127816 166968 1781700 1598141 8192 128 146303 190994 1771686 1757998 8192 256 159800 204258 1900658 1827761 8192 512 147354 221017 1979725 1903396 16384 4 30263 33207 833703 936822 16384 8 48529 57620 1233813 1324181 16384 16 80467 90009 1311345 1459204 16384 32 108845 125713 1663877 1643306 16384 64 130423 168599 1415967 1755295 16384 128 132440 197948 1984517 2027972 16384 256 157047 199649 1837821 1927085 16384 512 161353 189248 1695362 1704529 32768 4 30746 33962 929534 904722 32768 8 50262 55627 1125581 1046135 32768 16 78707 90183 1447734 1270867 32768 32 107928 119779 1460255 1441690 32768 64 123974 150629 1531510 1494830 32768 128 145143 183750 1638405 1624520 32768 256 158805 183073 1675087 1839145 32768 512 150121 208822 1681008 2023577 65536 4 29637 32250 916932 960165 65536 8 52579 51279 1134800 1253274 65536 16 80696 87640 1253342 1305059