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 10:22:26 2026 Auto Mode Machine = Linux oleg158-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-oleg158-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 3006 4710 525513 488236 64 8 1898 4770 809014 219883 64 16 3103 16092 863676 143563 64 32 2000 19704 998622 743988 64 64 2351 32225 1163036 1226821 128 4 4597 9670 511887 465304 128 8 2908 9825 718889 558771 128 16 3260 27886 901083 38859 128 32 6356 55774 1024942 824932 128 64 8288 40251 1048974 1172704 128 128 7597 56141 2326073 1618028 256 4 5749 8644 559005 373240 256 8 3842 9077 481972 664935 256 16 5736 28603 911645 489442 256 32 3006 12935 794889 868157 256 64 9072 42666 1230218 1274008 256 128 6598 34997 1430119 1642294 256 256 6115 21165 1683493 1340826 512 4 6055 5006 50628 369122 512 8 6998 9048 736497 469312 512 16 11677 19006 811349 101546 512 32 15912 40251 1108203 962218 512 64 12816 55018 1501940 1176828 512 128 7381 15287 971357 1455126 512 256 20962 52218 1514652 612376 512 512 22976 68341 1620980 955368 1024 4 9986 4264 95827 183015 1024 8 4900 5226 867879 697596 1024 16 9140 9222 970656 927477 1024 32 11660 20395 810095 549945 1024 64 23107 33172 950885 1194770 1024 128 26406 73962 775152 1010864 1024 256 26946 97626 905384 1437980 1024 512 28495 31719 1027060 1074599 2048 4 4265 8660 403059 184655 2048 8 12295 5415 229801 232645 2048 16 16170 16358 242476 895922 2048 32 9683 11210 1139731 373381 2048 64 17849 23595 424890 1122162 2048 128 21477 35158 713046 1186486 2048 256 46246 70120 708868 341904 2048 512 44447 44331 459826 345479 4096 4 5909 5406 142509 294232 4096 8 10060 7383 292488 263188 4096 16 11303 12950 318754 592944 4096 32 28083 22308 1070810 501399 4096 64 35675 20405 501473 353562 4096 128 25311 27868 999015 334207 4096 256 38954 44648 676457 1011842 4096 512 20770 40039 482732 574562 8192 4 1887 6574 184592 363799 8192 8 8650 9152 514476 483907 8192 16 21199 25936 607934 344331 8192 32 22568 29133 775180 425803 8192 64 19542 20193 274292 445751 8192 128 24911 30196 504964 429009 8192 256 26612 35652 456299 663638 8192 512 28333 44447 628219 357869 16384 4 6000 6103 280884 217692 16384 8 10930 10000 296082 179473 16384 16 15091 15200 542877 413726 16384 32 20100 30522 486475 561443 16384 64 20103 28446 457566 419533 16384 128 21283 36886 649284 760702 16384 256 28142 38977 754157 322640 16384 512 31172 58313 950295 451736 32768 4 4983 4060 368892 213958 32768 8 6816 7807 180814 263904 32768 16