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: Mon Jun 2 08:33:39 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 7525 11410 316623 388021 64 8 13112 46411 688639 353294 64 16 21746 65571 743988 799377 64 32 13490 93310 174444 969761 64 64 35555 116366 1124074 1429325 128 4 19502 17755 361576 270626 128 8 19259 47709 568836 666253 128 16 32611 52353 757430 927549 128 32 28394 68515 1024942 805138 128 64 40011 134324 1561553 677178 128 128 25979 156075 1852520 1684006 256 4 14043 20318 151470 179531 256 8 24392 44561 575175 323630 256 16 29074 75182 790209 904732 256 32 54317 111305 1048775 1036624 256 64 47241 146971 1266495 1079348 256 128 71612 175827 382140 1718521 256 256 90811 222823 1842366 1652404 512 4 21310 17318 307847 439175 512 8 39329 38600 444447 434642 512 16 55172 49892 839252 964378 512 32 63864 96460 801059 1125040 512 64 55465 113277 1379416 563229 512 128 64255 193052 1528669 597551 512 256 76257 197237 1778004 1667552 512 512 83648 220779 1199171 1815584 1024 4 19820 24589 296126 385101 1024 8 25193 44763 575285 266804 1024 16 51701 62264 630148 855604 1024 32 61284 107789 438360 937805 1024 64 55017 120260 1213334 833196 1024 128 107326 94553 1043783 1548960 1024 256 68858 127968 1439908 1528019 1024 512 76049 150122 1787480 1878973 2048 4 22527 24198 331826 328778 2048 8 36123 38961 587997 454594 2048 16 36111 50566 465357 941176 2048 32 82308 90411 1042745 447653 2048 64 105235 145083 564354 1235818 2048 128 81623 150113 1474462 1319537 2048 256 115419 150844 972063 1354493 2048 512 92127 140246 1377297 1250936 4096 4 23126 26948 328808 255376 4096 8 37062 37168 646155 614932 4096 16 51607 65670 723825 947708 4096 32 68907 73311 640113 1190004 4096 64 82452 108999 1240889 1181087 4096 128 101925 146752 1313666 1034881 4096 256 95593 115152 1306572 1405098 4096 512 121923 164689 1306473 1358972 8192 4 27462 28096 324537 276037 8192 8 36774 40294 568137 383073 8192 16 52782 75344 886867 946606 8192 32 88356 113468 862945 1037500 8192 64 103802 120840 1305123 1165969 8192 128 144870 157329 1368542 1407101 8192 256 160379 152412 1575715 1485903 8192 512 144426 186003 1666750 1460761 16384 4 26035 26655 402179 287863 16384 8 42559 52082 593407 562445 16384 16 63215 85254 874607 874796 16384 32 87171 108826 808808 1059491 16384 64 109627 143020 1113428 1420739 16384 128 102329 161175 1285129 1187155 16384 256 142690 197221 1320213 1312823 16384 512 147166 226348 1690316 1581328 32768 4 26076 26184 354221 319333 32768 8 42850 46353 600244 540190 32768 16 62671 75106 712828 890461 32768 32 83192 123473 885167 1149551 32768 64 120412 151254 1152297 1174061 32768 128 126922 160724