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: Wed Apr 30 23:25:49 2025 Auto Mode Machine = Linux oleg305-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg305-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 13826 28218 333126 397208 64 8 10648 19955 576282 532815 64 16 18332 59377 435202 754443 64 32 15439 41970 592827 615952 64 64 8796 39384 1460430 1330167 128 4 12042 10172 365764 320748 128 8 14001 30791 666253 520321 128 16 12234 68778 673778 719853 128 32 14887 91619 1000121 1040839 128 64 28725 138554 1440082 1539168 128 128 34206 175115 1802755 1833539 256 4 9327 24760 285129 357103 256 8 12687 49641 393772 567575 256 16 16833 31864 814795 790209 256 32 24516 72560 1185399 519266 256 64 24078 138443 1292410 1286217 256 128 70758 185774 1729594 1718521 256 256 25264 129885 2131261 1868008 512 4 17315 19271 375643 55737 512 8 11896 51524 648041 585814 512 16 45066 82197 1002183 888930 512 32 50869 36940 1036527 908101 512 64 42324 89636 714207 1372364 512 128 105502 155346 1528669 1158418 512 256 60835 51555 1610042 1684557 512 512 98649 181885 2235086 220417 1024 4 6450 19263 346317 287484 1024 8 33544 32358 494196 602396 1024 16 46295 52796 650180 840041 1024 32 84901 73748 774592 1075676 1024 64 93566 115122 1329791 566334 1024 128 79421 73362 1592612 1428415 1024 256 82434 166614 1670020 1756054 1024 512 87527 108360 1262555 1684429 2048 4 9045 19794 218174 313103 2048 8 22291 29874 317477 542232 2048 16 35942 44021 924662 855843 2048 32 54889 88977 514065 963774 2048 64 69586 51068 364214 1363523 2048 128 82617 89923 1020933 1204623 2048 256 55000 65189 1659632 451512 2048 512 142182 139481 870060 628617 4096 4 7424 16846 198451 205045 4096 8 27990 28334 505055 327786 4096 16 22095 39264 732873 273248 4096 32 46985 55815 1131534 523859 4096 64 69123 39368 205974 849277 4096 128 52681 88733 1395058 1472921 4096 256 50344 141897 1632476 1648296 4096 512 50783 88080 1615134 1684828 8192 4 13320 10221 288980 342618 8192 8 17635 26510 445265 408457 8192 16 34113 41042 513155 430730 8192 32 42623 63010 575522 759368 8192 64 45798 64483 1348032 1190202 8192 128 64666 70788 633817 948566 8192 256 47264 79819 1595322 1650973 8192 512 93232 84938 1478168 1726029 16384 4 15894 10908 204730 164102 16384 8 18860 20619 162685 238677 16384 16 36074 40395 597520 416386 16384 32 49031 60286 286218 310797 16384 64 55533 53926 432304 492722 16384 128 76358 101156 1244133 586695 16384 256 63295 69997 771047 541388 16384 512 94451 105013 608617 607219 32768 4 12590 14211 192670 207794 32768 8 19849 23594 477910 488311 32768 16 34630 34260 294625 577409 32768 32 43947 52898 539630 402377 32768 64 68833 72880 671436 736358 32768 128 66976 111281 849175 808865 32768 256 78835 106831 901707 1233645 32768 512 91826 114939 696274 783044 65536 4 12116 13998 143834 123228 65536 8 18121 20563 257926 435310 65536 16 30862 31364 477758 485884 65536 32