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: Thu Oct 23 10:01:04 2025 Auto Mode Machine = Linux oleg321-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-oleg321-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 4685 14314 587635 557144 64 8 5064 37319 831569 809014 64 16 11267 54330 1330167 852702 64 32 7801 77856 1033216 1049372 64 64 13559 101113 1255511 1734015 128 4 2859 20622 618653 447464 128 8 12935 38966 870405 538051 128 16 11132 52522 1057236 522346 128 32 27169 93096 1622919 913347 128 64 23765 120083 1363288 1196221 128 128 13605 136441 1377278 1727352 256 4 8476 22326 532133 566377 256 8 24311 25391 365740 742146 256 16 11431 51759 190049 809878 256 32 21292 91430 777619 1084800 256 64 38077 69887 1479379 1243036 256 128 32615 149010 1600674 1286217 256 256 22434 102644 1339154 2228578 512 4 18156 12661 780390 565751 512 8 15681 37813 701378 748563 512 16 12753 67412 1179413 1213400 512 32 54128 93945 1510391 1177473 512 64 53484 129258 1429934 1270846 512 128 57438 155436 1635797 1044594 512 256 67042 50437 1004057 1689859 512 512 69498 182132 1772135 1840480 1024 4 13006 13757 680897 562035 1024 8 28805 30469 888894 633681 1024 16 33925 30060 1104443 1021928 1024 32 40147 20280 564473 1149368 1024 64 68397 55501 1144163 953418 1024 128 66866 134101 1446211 1333093 1024 256 66506 124470 1675884 1478064 1024 512 76508 173325 1622698 1780809 2048 4 11707 17187 619103 263197 2048 8 22435 20829 869972 769376 2048 16 16407 31515 454811 871826 2048 32 36288 56184 687700 992734 2048 64 40634 78769 385894 1254040 2048 128 45407 163161 1605053 1393156 2048 256 49972 70983 451298 1485169 2048 512 40275 82245 1741389 1519319 4096 4 9346 12403 243721 157181 4096 8 13601 14626 422132 310516 4096 16 15817 21137 1068080 637003 4096 32 19154 23816 654950 950750 4096 64 22306 65829 1259077 528728 4096 128 40421 73233 1625372 1088518 4096 256 45170 58123 838173 333688 4096 512 43124 67830 1802940 1347884 8192 4 9524 11651 480752 527323 8192 8 13525 18659 452293 405664 8192 16 27957 29330 384294 715965 8192 32 33246 39476 678083 1116670 8192 64 48494 71204 1452486 1341401 8192 128 53472 91973 1529219 1314913 8192 256 47237 85675 1306364 703303 8192 512 46623 43911 1499848 1358747 16384 4 12106 12192 232396 449935 16384 8 17817 18222 408211 606656 16384 16 29470 25339 1019216 926590 16384 32 24821 46230 1325356 890150 16384 64 34702 48654 1490667 1223859 16384 128 57975 93037 1603916 952495 16384 256 58053 67389 1553586 392853 16384 512 58266 102883 682012 785879 32768 4 12886 12904 283190 511248 32768 8 17875 17560 667971 469771 32768 16 23895 29209 1123768 415616 32768 32 33959 38839 1134623 1055876 32768 64 49282 53220 1402383 566128 32768 128 44805 68762 394391 349879 32768 256 68899 68001 773542 936655 32768 512 52499 77526 476924 617820 65536 4 9702 11435 590808 432540 65536 8