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 Oct 24 11:02:33 2025 Auto Mode Machine = Linux oleg245-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 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-oleg245-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 8043 12453 653436 456673 64 8 7816 36364 811459 809014 64 16 16532 61954 1070292 877797 64 32 20559 83891 1304314 1119387 64 64 14615 103371 1279447 1599680 128 4 6435 20078 615109 479432 128 8 11616 35379 518312 816154 128 16 23813 61246 1185654 935631 128 32 20671 85274 1254941 1217930 128 64 22622 52013 2058509 1196221 128 128 33298 135306 1377278 1618028 256 4 12478 16099 256030 576411 256 8 11686 41510 894929 757326 256 16 32586 62562 1076103 921029 256 32 31624 95487 1361224 1168627 256 64 30958 123138 1248819 1243036 256 128 48219 147132 1514860 1570244 256 256 40289 148331 1123389 1766587 512 4 15243 21896 630536 562638 512 8 28153 36206 736750 723105 512 16 23696 21011 649806 1030064 512 32 27998 64444 1118011 1044594 512 64 37152 97357 1336492 284932 512 128 38653 154909 977103 1528669 512 256 34210 121382 1590957 1689859 512 512 62181 176242 1679288 2081286 1024 4 12028 16344 472347 562698 1024 8 25935 33145 858340 800582 1024 16 21726 54303 1137798 993100 1024 32 66649 69432 1287921 1062372 1024 64 53722 84635 1179674 1099918 1024 128 57781 104447 1454537 1456510 1024 256 53243 102195 1291406 1446698 1024 512 58958 147209 1732676 1670669 2048 4 14452 16844 439499 564800 2048 8 28482 28379 751012 746638 2048 16 44394 43459 523782 1019963 2048 32 54472 63486 1401796 947300 2048 64 45777 89273 1013345 1180454 2048 128 60645 61486 1603555 907374 2048 256 35991 93772 1458688 1416124 2048 512 48181 86739 1478778 1447382 4096 4 12759 12556 381335 368810 4096 8 22685 25253 522187 397013 4096 16 31975 37756 321330 848396 4096 32 35240 67026 1346933 1179708 4096 64 52769 63519 1420316 1245025 4096 128 65492 94644 826161 1125603 4096 256 66227 156318 1026533 1460152 4096 512 86144 123417 1731177 1525498 8192 4 12191 14184 336359 540691 8192 8 16272 18757 818794 783685 8192 16 22437 30800 288045 926592 8192 32 29797 40717 459036 1111505 8192 64 52514 52757 1275426 1149585 8192 128 67654 92510 1500372 1362410 8192 256 51662 100036 916117 1000493 8192 512 66059 105435 1618390 869915 16384 4 4052 17866 362670 526901 16384 8 23934 24356 362638 778489 16384 16 35424 49554 1155671 1100642 16384 32 49133 70859 1257014 1148793 16384 64 50379 80833 668270 1084813 16384 128 57836 90261 1558589 1294571 16384 256 68891 121538 1569948 1422710 16384 512 94830 136537 1011535 1131337 32768 4 15818 19052 240170 445854 32768 8 24277 28333 937779 512575 32768 16 34602 38515 918158 966125 32768 32 34895 48349 602906 574544 32768 64 51196 71557 1387294 1006172 32768 128 63669 71951 1288403 786350 32768 256 48133 76876 1498988 1286992 32768 512 68026 92562 1684717 528831 65536 4 12404 15466 312037 460457 65536 8 22085 32012 596589 714336 65536 16 36491 42104 761551 944105 65536 32 39321 40726 430179 529233 65536 64 40530 71506 1082666 649945 65536 128 34591 56952