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 Oct 23 12:52:38 2025 Auto Mode Machine = Linux oleg259-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-oleg259-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 2110 10701 263480 125039 64 8 6731 24586 222250 27408 64 16 3862 32669 608965 394870 64 32 4193 58294 1045286 780776 64 64 8157 78540 1226821 1336792 128 4 2555 4489 251014 122606 128 8 4031 8439 145619 402510 128 16 15585 50255 800337 155533 128 32 11165 70135 467329 790905 128 64 17100 83328 889145 1085013 128 128 7694 99608 1377278 1504659 256 4 4072 8704 54444 97076 256 8 4254 10178 48623 44629 256 16 7794 13817 663292 643033 256 32 7881 15439 861885 644578 256 64 4655 73203 1400278 891956 256 128 12872 78744 1137672 733527 256 256 17780 95419 1639786 1391207 512 4 3875 10833 37391 284291 512 8 14066 9683 441704 448719 512 16 5052 7223 304788 593259 512 32 8841 21590 530530 755144 512 64 11764 34697 1032044 1049187 512 128 17612 59424 212436 1326585 512 256 11676 30369 1700565 1723770 512 512 25337 112499 1565443 1308798 1024 4 4377 11586 218198 71289 1024 8 9970 8566 400956 399836 1024 16 12444 39315 689533 161054 1024 32 19091 20964 344429 432402 1024 64 10783 25786 1125277 978841 1024 128 19095 35765 1066594 877454 1024 256 17610 29583 1203137 1311117 1024 512 32795 53255 1577984 222943 2048 4 4142 4751 77361 76172 2048 8 11325 15589 331174 211092 2048 16 6862 7026 220663 297891 2048 32 20299 22501 1016824 806960 2048 64 11778 55956 1125839 1031724 2048 128 41970 93915 1402711 1193576 2048 256 11676 28748 240966 1328106 2048 512 16483 46023 1591375 1590196 4096 4 6544 5866 57998 85189 4096 8 12270 12345 400464 288815 4096 16 26308 39383 484679 262665 4096 32 33366 46493 624954 769783 4096 64 35276 56024 1238563 795961 4096 128 61056 61300 474728 1398464 4096 256 40187 97735 1512471 1378159 4096 512 44202 26519 1702358 691515 8192 4 6306 5786 87867 93403 8192 8 8939 12655 291768 275740 8192 16 16654 15908 445606 358228 8192 32 23817 22762 897149 164142 8192 64 30852 28175 988774 511619 8192 128 31621 62018 1004793 973617 8192 256 47047 57378 1461817 532983 8192 512 33443 61655 426200 576246 16384 4 7661 5962 94098 109647 16384 8 9858 12117 123733 170739 16384 16 10552 17182 231566 317508 16384 32 17660 26772 725089 272735 16384 64 23831 39571 547431 508239 16384 128 28891 33153 840627 1004849 16384 256 40248 46675 782354 1150159 16384 512 46421 50016 1007634 1052014 32768 4 6452 6284 116971 104593 32768 8 10142 11122 146795 149146 32768 16 15657 19302 223904 257474 32768 32 31513 29638 254171 383574 32768 64