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 Apr 1 07:58:58 2025 Auto Mode Machine = Linux oleg421-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-oleg421-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 16435 19962 385790 507625 64 8 21985 58244 418250 400168 64 16 17509 59417 1017549 720041 64 32 29783 124517 1310683 1188789 64 64 29919 135313 1336792 1638743 128 4 18353 26643 455436 366763 128 8 30931 49363 627328 695603 128 16 29163 83173 757430 1306873 128 32 42850 119735 983630 1579934 128 64 38049 108375 1040839 2035099 128 128 49803 152571 1885042 1885042 256 4 23719 33354 366864 393772 256 8 39591 52329 703260 546765 256 16 50802 88128 1230218 1153561 256 32 60880 119453 1128110 1683493 256 64 66875 161518 1778290 1471270 256 128 83992 155236 1662639 1696795 256 256 81922 205115 1981783 2699161 512 4 27274 31213 377824 557092 512 8 40648 43419 807687 737762 512 16 61583 63712 929322 1034530 512 32 57579 138299 1030064 1945526 512 64 88396 158710 1510391 1672748 512 128 103814 202462 2081286 2032051 512 256 123285 245544 2016784 2235086 512 512 125343 227347 2497638 2782414 1024 4 29394 31808 514071 508231 1024 8 42159 52542 672369 790707 1024 16 72670 79998 1166221 1114185 1024 32 100322 120442 1503942 1662907 1024 64 126063 148904 1428415 1738286 1024 128 105949 160153 1607514 1558516 1024 256 110094 166990 1731977 2060128 1024 512 145371 166260 2019445 2129589 2048 4 30912 29929 456139 469169 2048 8 44081 54475 594672 831487 2048 16 72214 85475 639617 1189279 2048 32 89362 126858 1384623 1257160 2048 64 121941 150014 1408461 1637174 2048 128 120033 162025 1448358 820213 2048 256 137688 156742 1667687 1861789 2048 512 156337 188079 1939560 1915768 4096 4 30604 31788 492192 413735 4096 8 51125 53957 764609 799368 4096 16 68614 90525 1012617 776077 4096 32 95566 121032 834914 988666 4096 64 145661 176740 1243853 1081052 4096 128 144893 192012 1198723 1101075 4096 256 159731 211734 1237849 1200146 4096 512 190087 201623 1246923 1278092 8192 4 29525 32350 484993 463582 8192 8 50017 54833 730843 805681 8192 16 75964 81893 1104786 1028217 8192 32 103938 117242 1248591 1304479 8192 64 130427 142675 1243125 1384200 8192 128 133398 167173 1681432 1509468 8192 256 141061 201932 1551803 1567806 8192 512 149604 194044 1707756 1756829 16384 4 25822 29172 456656 444131 16384 8 44959 50281 744597 730352 16384 16 74480 83940 708070 967868 16384 32 98011 115007 1151855 1241481 16384 64 119477 139363 1496380 1272941 16384 128 130916 170995 1455310 1567870 16384 256 167515 181086 1696952 1740976 16384 512 131031 190958 1922341 1705036 32768 4 26750 29159 454428 478609 32768 8 46873 51818 676886 717731 32768 16 73099 77535 1032709 1010232 32768 32 101072 120138 1288403 1303161 32768 64