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 07:54:45 2025 Auto Mode Machine = Linux oleg309-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-oleg309-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 16802 28661 278516 503814 64 8 22082 44629 842003 863676 64 16 33825 62986 1232453 1285575 64 32 41826 133297 1066042 1722886 64 64 45261 131921 1204796 1124074 128 4 24629 36334 398625 544601 128 8 34278 60836 592046 656477 128 16 36985 76056 870405 1294270 128 32 56686 160604 1185654 1024942 128 64 78872 138661 1778862 1067750 128 128 68857 155713 2175277 1749872 256 4 28858 31249 359615 531080 256 8 34065 62711 868157 545931 256 16 67976 80274 859127 1058076 256 32 65341 172494 1011241 1274008 256 64 85763 135320 1718521 1868008 256 128 125308 265593 1981783 2152625 256 256 122254 221673 1304976 1600674 512 4 27574 36127 518239 555938 512 8 36959 56819 495633 705294 512 16 73238 94217 863203 819085 512 32 105218 155380 967855 924521 512 64 125828 238032 1249404 1999881 512 128 144225 283167 2016784 1361920 512 256 158126 290404 1650887 1625889 512 512 126793 285690 1614885 1789859 1024 4 30563 29313 349502 329045 1024 8 47984 55914 849008 878890 1024 16 71433 79485 876737 834491 1024 32 95503 109694 1018777 1013967 1024 64 120089 149162 1537868 1572783 1024 128 128885 231051 1216082 1227552 1024 256 145825 214407 1695065 1609925 1024 512 182595 280097 1871603 1803239 2048 4 27014 34214 345715 355487 2048 8 44453 48499 501227 546857 2048 16 72253 82551 1097501 538121 2048 32 111219 148738 964640 680616 2048 64 130214 134949 1251847 1517976 2048 128 158489 171912 1784066 1658350 2048 256 185220 275417 1474462 1787035 2048 512 204289 247314 1894641 1685687 4096 4 29820 30587 450609 405111 4096 8 53077 59789 554192 708395 4096 16 97417 97698 917149 769472 4096 32 108102 135329 1282864 971557 4096 64 116775 149849 1182795 1010116 4096 128 194206 190991 1136550 1847535 4096 256 177046 215714 1134598 1297788 4096 512 205715 219885 1535177 1162624 8192 4 27857 30952 425229 396512 8192 8 48114 57543 645947 669443 8192 16 75439 76971 981291 953118 8192 32 120766 155104 1488607 1182298 8192 64 165930 164600 1299496 1357405 8192 128 176490 217872 1367127 1435435 8192 256 186669 207172 1404628 1367399 8192 512 173251 220730 1730463 1467311 16384 4 26590 32973 401657 439130 16384 8 54199 58881 794529 756940 16384 16 88729 95905 831463 1073728 16384 32 101245 116467 1161256 977853 16384 64 143428 182840 1442116 1268710 16384 128 191791 239269 1795141 1537802 16384 256 200661 248234 1723164 1581000 16384 512 227098 202134 1530064 1412417 32768 4 28652 31446 437589 461689 32768 8 52824 55221 724232 686972 32768 16 78621 91873 986188 866833 32768 32 113013 139706 1270773 1273280 32768 64 148612 157577 1367785 1338780 32768 128 188374 230343 1583164 1446957 32768 256 190888 206299 1638991 1496866 32768 512 214069 281412 1627000 1734205 65536 4