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 08:10:05 2026 Auto Mode Machine = Linux oleg246-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-oleg246-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 1636 4204 537079 913649 64 8 4017 16640 561808 710511 64 16 2856 15636 1087638 866463 64 32 3861 60900 998622 93701 64 64 4024 59259 316623 1255511 128 4 3806 9007 643108 578645 128 8 6729 6939 921183 743788 128 16 4104 35573 1067750 978253 128 32 10252 22889 688467 1185654 128 64 8662 37110 1306873 1254941 128 128 8083 78423 953918 2027414 256 4 6318 6233 624702 577962 256 8 8896 12855 966633 719277 256 16 7940 11737 1137672 934659 256 32 10384 18134 2371308 697776 256 64 9535 51324 1158540 914752 256 128 11718 99339 931416 1598292 256 256 13852 65576 1455317 1956506 512 4 9106 4807 485767 144225 512 8 8095 14260 648237 754083 512 16 14390 38752 1537424 515626 512 32 17383 48962 1347393 756474 512 64 21465 71729 1395552 1111070 512 128 15781 65472 1458090 763195 512 256 20525 79554 1667552 839252 512 512 28441 52914 966113 911184 1024 4 10479 11056 367285 339179 1024 8 11152 21598 815943 806899 1024 16 32882 24114 888159 455515 1024 32 19082 33151 585799 612010 1024 64 17328 39083 748016 605965 1024 128 29392 60989 1372717 1109293 1024 256 11719 66976 1517224 371414 1024 512 33587 41175 559546 865605 2048 4 9380 6537 190123 207267 2048 8 10141 9486 716317 437975 2048 16 21335 20806 464074 891922 2048 32 21378 31650 577055 982739 2048 64 32149 34515 365781 555917 2048 128 15887 63309 1363523 1152577 2048 256 38603 54716 1426234 676116 2048 512 34873 67231 1465157 1064453 4096 4 7856 6600 480074 624863 4096 8 8280 9997 439295 211089 4096 16 14853 19478 414494 222913 4096 32 17619 29229 476281 379147 4096 64 29484 38975 580993 773004 4096 128 25271 44299 864883 462411 4096 256 48839 58681 1299555 484611 4096 512 31416 51253 955881 1527261 8192 4 6985 5660 344867 450632 8192 8 9082 9558 522416 402655 8192 16 22091 16339 677535 817081 8192 32 14608 22311 620561 366582 8192 64 20140 40104 530367 496579 8192 128 29439 21597 728689 348880 8192 256 34357 38242 1052275 689154 8192 512 33122 35591 938180 502571 16384 4 6491 9891 249870 262139 16384 8 12281 8559 327935 443856 16384 16 10003 9471 372558 302271 16384 32 15572 17752 520571 578428 16384 64 24545 31137 548436 492292 16384 128 22840 29309 884673 554673 16384 256 25963 31624 652880 555484 16384 512 23593 57550 1220403 876660 32768 4 6729 7475 229461 286691 32768 8 9768 12831 496463 563302 32768 16 14455 15677 369816 382544 32768 32 17065 24645 357078 628244 32768 64 33075 36096 786179 776071 32768 128 25748 38048 1277316 704050 32768 256