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: Thu Mar 13 16:39:47 2025 Auto Mode Machine = Linux oleg427-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-oleg427-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 8149 21790 347801 333540 64 8 18741 24568 503814 546928 64 16 14842 24428 863676 760859 64 32 28581 80712 1255511 1083249 64 64 19661 116771 1526887 1679761 128 4 15617 33333 316774 398625 128 8 28978 44897 511887 627328 128 16 23782 72200 826202 927549 128 32 31288 106844 283188 1015251 128 64 16537 102323 1521718 1391557 128 128 58471 95582 1827299 1642783 256 4 19151 19631 292190 340351 256 8 24801 37736 415566 514045 256 16 30231 59979 807442 573946 256 32 23635 112224 825443 1035624 256 64 61332 204451 1292410 1325925 256 128 74550 82660 1398455 1525622 256 256 73414 196195 1817419 1985448 512 4 24923 20336 359543 332437 512 8 28341 34541 544106 730484 512 16 46163 53753 644927 864942 512 32 67042 114588 988345 1047141 512 64 73258 139584 1110496 1625889 512 128 89449 102462 1276891 624303 512 256 94482 171980 1766304 1705969 512 512 101729 233047 2047551 1869318 1024 4 18120 25249 243868 307798 1024 8 41783 46028 527002 372639 1024 16 51706 81302 710169 766985 1024 32 64374 124164 964120 465487 1024 64 69197 137558 1452078 1328146 1024 128 60563 111156 1307923 1136593 1024 256 99301 116467 1589665 1600327 1024 512 81625 139984 699870 1657133 2048 4 21750 24628 317184 392255 2048 8 37632 35988 522571 497338 2048 16 51185 70038 675213 853377 2048 32 80842 112385 797816 1053487 2048 64 100822 117363 882394 1306095 2048 128 85191 108554 1488257 1511299 2048 256 94639 141573 1083109 1135362 2048 512 136852 206912 1759221 1774484 4096 4 24217 25122 265285 254028 4096 8 35632 37749 341386 586908 4096 16 55197 65343 945309 722638 4096 32 89268 106056 904784 882929 4096 64 89147 126007 997854 1327675 4096 128 100414 136683 1437669 1314470 4096 256 99897 123143 1693297 1347355 4096 512 101982 175545 863578 915341 8192 4 20022 24714 270068 359521 8192 8 36489 39321 483016 520958 8192 16 62635 62829 542295 680905 8192 32 63402 69932 869827 899332 8192 64 83610 90166 908607 1021704 8192 128 103066 122763 1313455 671091 8192 256 109784 183594 1565163 1574776 8192 512 118731 149956 848727 1682502 16384 4 20618 22940 234929 183461 16384 8 35610 40292 421302 405755 16384 16 49877 65907 752283 741391 16384 32 96216 110310 875309 1075341 16384 64 108774 125962 1048451 1141030 16384 128 134457 145888 1037873 798211 16384 256 150021 126910 1492869 1567263 16384 512 132979 229455 1353256 1687700 32768 4 23444 27654 386862 361238 32768 8 46152 42348 561962 516560 32768 16