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: Tue Sep 1 07:35:57 2026 Auto Mode Machine = Linux oleg626-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-oleg626-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 2517 7579 633392 440921 64 8 2716 14156 877797 801764 64 16 4050 21483 402569 41963 64 32 2542 19447 1101022 916769 64 64 2704 35931 1163036 1734015 128 4 4127 4182 364522 432330 128 8 6822 20826 780556 688467 128 16 7095 23080 1105114 743788 128 32 7246 39228 1175271 1074159 128 64 5756 84762 1319723 1294270 128 128 8406 65980 1440082 1579934 256 4 3699 5901 420283 571198 256 8 10180 22012 572721 716876 256 16 11059 25266 944525 864661 256 32 4631 30414 383779 951219 256 64 12778 57759 1137672 1062263 256 128 16338 64695 1080434 621448 256 256 8668 86691 1504249 1740810 512 4 7880 3686 633699 279918 512 8 9422 10882 793657 730236 512 16 12078 22518 1066910 168922 512 32 10489 24106 1233614 324255 512 64 19339 62869 1343179 725058 512 128 20178 47263 954944 1245780 512 256 16470 46732 1616100 1437592 512 512 25598 66866 1729323 1961520 1024 4 6705 6714 347354 68325 1024 8 7133 11172 869284 800731 1024 16 12578 23126 1063425 466094 1024 32 10670 36911 496596 1033486 1024 64 8966 54369 1186518 730958 1024 128 32618 49873 689976 811319 1024 256 21445 70806 1229309 493685 1024 512 31065 74581 1021928 950675 2048 4 10342 6491 258353 256700 2048 8 9635 11502 521778 262867 2048 16 12671 24401 621521 510855 2048 32 28318 40687 561697 433817 2048 64 35255 56028 862633 606427 2048 128 37511 59170 861940 795304 2048 256 28078 34087 1569280 484054 2048 512 12436 29927 374880 1487227 4096 4 4994 5950 310213 235296 4096 8 9688 9008 324774 308547 4096 16 28436 30856 753641 788146 4096 32 31110 29989 647593 490016 4096 64 22237 32056 616322 266752 4096 128 23802 32438 592413 410502 4096 256 37986 56144 939673 688632 4096 512 40740 45290 851213 945933 8192 4 5809 5372 317631 474839 8192 8 9162 7158 262647 259899 8192 16 2185 14995 452049 383073 8192 32 19550 21828 798900 417616 8192 64 24429 32204 656248 746694 8192 128 24858 37587 354707 393182 8192 256 25063 32724 722711 1247639 8192 512 35419 63037 653117 574838 16384 4 6199 5724 169946 222720 16384 8 8391 11900 599773 492988 16384 16 10122 17581 657522 522447 16384 32 16175 23381 527581 505711 16384 64 29168 38405 893054 705474 16384 128 30354 32667 784148 578632 16384 256 26904 40645 714556 600832 16384 512 34037 42638 648898 1142054 32768 4 6637 6055 291185 300290 32768 8 9487 10273 392125 222199 32768 16 14692 14217 489915 278324 32768 32 22186 24802 951893 783209 32768 64 21944 32685 505459 526513 32768 128 24670 33571 671725 488717