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 16 08:52:52 2025 Auto Mode Machine = Linux oleg455-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-oleg455-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 13082 26844 780776 852702 64 8 21526 48560 983980 926260 64 16 24825 80086 1163036 1049372 64 32 12828 103570 1279447 271200 64 64 15499 137391 1722886 2067979 128 4 11533 26430 673778 707520 128 8 21812 48758 571257 558771 128 16 29230 54170 1637771 1332828 128 32 45587 115015 1504659 1487977 128 64 51712 151838 1684006 1802755 128 128 55606 175573 1802755 1663139 256 4 22630 31667 746272 577962 256 8 25349 55591 1570244 316849 256 16 47494 72644 1325925 1168627 256 32 37389 129807 1489641 1332507 256 64 98727 113577 809878 891956 256 128 83828 193473 1514860 2148318 256 256 70898 166554 855703 1985448 512 4 21572 28130 714207 680055 512 8 41240 53635 1034530 1213400 512 16 66989 87821 1110496 1476130 512 32 87193 120959 1296159 1372364 512 64 69113 64184 1795846 1605228 512 128 99013 208639 1605228 1700565 512 256 69509 199676 1815584 1897396 512 512 84557 171403 249887 2091421 1024 4 26677 27519 843505 708646 1024 8 45501 53724 878351 808874 1024 16 76491 84314 1171629 1066594 1024 32 82183 125441 1404591 1372717 1024 64 117538 152678 688207 1630707 1024 128 129754 181953 1643814 1523683 1024 256 73600 272543 1855433 1689730 1024 512 135237 164578 1790460 1865101 2048 4 26031 30931 934317 773672 2048 8 46880 54881 754641 1061690 2048 16 71859 85938 1152577 1005399 2048 32 89393 131501 1391351 942415 2048 64 77108 196131 1479797 1364390 2048 128 142250 149118 955625 407399 2048 256 89544 150300 1802788 1681397 2048 512 98783 167058 1647536 1911931 4096 4 27590 31519 848019 832688 4096 8 46845 57277 1087071 1140321 4096 16 66309 86044 1247285 927348 4096 32 90134 114628 1414818 1441287 4096 64 110045 157532 1648928 1346405 4096 128 117775 155233 1523199 1544562 4096 256 142281 223679 1688969 1621536 4096 512 114609 186335 1821289 1931015 8192 4 29480 31038 585596 654997 8192 8 45333 47346 795736 804003 8192 16 68995 75519 1311350 1500306 8192 32 93937 124807 1474932 1511128 8192 64 117544 164746 1629906 1575642 8192 128 136834 182905 1503392 1741161 8192 256 132526 190840 1571750 1455316 8192 512 169870 176077 1648597 1194340 16384 4 26825 29214 555857 665855 16384 8 43453 54018 1046089 1087199 16384 16 74577 77654 901655 1074013 16384 32 71162 98352 1206836 1345915 16384 64 104206 148638 1427675 1362729 16384 128 111407 133230 880614 1186377 16384 256 122290 175709 1482307 1510025 16384 512 100101 138031 1196248 1624274 32768 4 20440 26478 556570 635089 32768 8 40359 47274 833514 1093729 32768 16 74612 84146 1260308 1258566 32768 32 105775 106834 1389945 1413445 32768 64 115302 126612 1242287 941634 32768 128 126626 136957 1439093 1575921 32768 256 127565 140937 1535376 1247406 32768 512 124516 188202 1275360 1638971 65536 4 28157 29418 769572 678657 65536 8 44880 53366 1069943 1072443 65536 16