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 22:13:57 2025 Auto Mode Machine = Linux oleg421-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-oleg421-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 12738 23366 226948 441646 64 8 22039 47545 355635 592827 64 16 31232 75027 831569 712397 64 32 26854 81422 1066042 942521 64 64 34722 132770 1105556 1421755 128 4 25226 22103 351630 342216 128 8 31960 45245 542400 630273 128 16 23520 68778 1332828 831319 128 32 51717 112579 1074159 1085013 128 64 58204 147459 1622919 1000121 128 128 50435 196886 1727352 1727352 256 4 25426 29799 359615 376512 256 8 26680 51038 379842 515279 256 16 47718 81816 721210 882426 256 32 56214 101384 1058076 1066483 256 64 82236 158023 1254656 733527 256 128 83359 172051 1543163 1952947 256 256 88769 222407 900936 1600674 512 4 24005 27587 313144 239813 512 8 32681 40185 384384 368362 512 16 59722 77482 608041 566946 512 32 72954 118824 1043072 665720 512 64 101163 182658 1344020 295275 512 128 107606 207189 1075459 1236455 512 256 126577 182008 1547395 1764853 512 512 142502 289738 1961520 2285029 1024 4 26925 26989 434282 273428 1024 8 44465 45353 574285 581201 1024 16 61320 79479 680897 819837 1024 32 89856 113461 938625 1127641 1024 64 106633 136444 1270773 1693061 1024 128 116496 209063 1384220 1496605 1024 256 148857 237700 1703807 1633188 1024 512 129180 188650 1542286 1537317 2048 4 25817 28754 279476 325021 2048 8 41151 51441 596034 658494 2048 16 69135 81531 908621 907374 2048 32 105096 109087 1120990 1117345 2048 64 79537 106866 1411470 1293897 2048 128 133237 148870 1494732 1376193 2048 256 134146 222757 1882186 1574169 2048 512 150168 222855 1836709 1491617 4096 4 26104 27255 340736 388326 4096 8 36510 48045 492121 436904 4096 16 71462 84364 780661 918964 4096 32 84017 106811 1182795 986792 4096 64 115823 120961 1420198 1340312 4096 128 125860 201346 1374081 1390316 4096 256 134356 189833 1556880 1464009 4096 512 138471 190291 1861145 1212855 8192 4 26189 26087 319938 388984 8192 8 45308 44679 602487 494059 8192 16 63160 72377 618116 930381 8192 32 89505 93789 981572 1014495 8192 64 85680 130044 1120969 1086480 8192 128 117110 198550 1341610 1234682 8192 256 99836 151742 1614512 1343131 8192 512 147094 151283 1168785 1787911 16384 4 25460 26858 366400 384060 16384 8 42057 45520 607960 597348 16384 16 70833 74064 835537 688952 16384 32 99224 103238 769700 1050454 16384 64 88237 105971 1254421 922114 16384 128 102458 109978 1262070 1398675 16384 256 110215 163969 1479498 1631214 16384 512 135005 213516 1799042 1421121 32768 4 20520 24650 355224 352575 32768 8 42972 45484 463926 519121 32768 16 56228 57349 576071 745626 32768 32 67741 81204 898171 574948 32768 64 89919 90713 1220770 912198 32768 128 96370 113561 1025183 927089 32768 256 84851 138860 608732 466720 32768 512 103305 132434 1447871 834831 65536 4