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 Sep 11 03:15:05 2026 Auto Mode Machine = Linux oleg147-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-oleg147-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 3052 9038 603489 195680 64 8 1623 2275 162510 681644 64 16 2794 4867 904414 674790 64 32 7119 19030 842003 789967 64 64 6682 26668 55949 627470 128 4 2084 3951 278343 520321 128 8 2250 13793 1142750 962469 128 16 17763 61924 1278855 753179 128 32 13378 66843 1827299 809997 128 64 8568 49942 637004 515822 128 128 19941 86427 2098744 3380677 256 4 15673 17467 426120 234656 256 8 16005 17410 563701 556687 256 16 23902 59769 1016025 859127 256 32 21615 80401 867455 568777 256 64 34065 55388 1071806 755195 256 128 22049 90589 1970871 1842366 256 256 31468 82450 600928 1802167 512 4 13942 17096 540681 293942 512 8 25319 34459 677267 1091308 512 16 7861 10843 479905 1080328 512 32 22107 44270 1299295 887094 512 64 7580 57709 639169 557816 512 128 15244 120673 1122687 1043072 512 256 36581 76282 1580419 1347393 512 512 37777 116018 1599251 421752 1024 4 5494 9482 581201 387150 1024 8 8588 13314 207538 200392 1024 16 9280 15662 804933 534146 1024 32 11348 17896 1108148 294927 1024 64 13240 15856 512537 402044 1024 128 15414 36101 1345201 1387798 1024 256 17888 37876 1312720 1404591 1024 512 55001 171040 1724328 1659694 2048 4 9487 7937 344896 366046 2048 8 7827 14054 154529 432811 2048 16 9078 13686 432158 515206 2048 32 34698 43983 946778 479060 2048 64 29749 34367 1222626 1358993 2048 128 19286 31750 947718 822490 2048 256 33403 41687 1576769 849159 2048 512 30789 75289 902606 1545562 4096 4 4927 4929 135355 488552 4096 8 10839 8934 288534 198758 4096 16 13668 15015 380036 662782 4096 32 18290 34109 601561 802205 4096 64 22943 28256 1511406 451403 4096 128 28213 69070 1565106 953229 4096 256 32022 62233 802504 981549 4096 512 64740 69941 1775365 1121562 8192 4 5690 4331 374338 299931 8192 8 11026 11678 499387 515418 8192 16 19291 26201 1195378 800705 8192 32 27068 30783 938385 635035 8192 64 23810 28395 1078737 1204345 8192 128 29518 37470 434978 658146 8192 256 28992 23798 438123 579433 8192 512 28766 49729 1575065 1337016 16384 4 4781 5628 213831 150036 16384 8 7798 15476 566726 370016 16384 16 10264 14096 580441 519418 16384 32 18578 17944 687134 387877 16384 64 20828 27086 756907 509011 16384 128 21268 38177 472189 509577 16384 256 28582 38382 835324 640324 16384 512 36194 53831 881710 767902 32768 4 4488 5598 369520 360916 32768 8