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 May 1 15:49:25 2025 Auto Mode Machine = Linux oleg458-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-oleg458-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 8307 27481 355635 365812 64 8 11186 43834 603489 233664 64 16 9842 66185 720041 66169 64 32 25683 102229 842003 1163036 64 64 6829 35555 1553394 1562436 128 4 15301 16978 372102 373136 128 8 11211 49937 259006 576780 128 16 21462 73395 848397 889145 128 32 26633 101992 1172704 1133103 128 64 39011 146453 1539168 1406136 128 128 13051 181817 325611 2004703 256 4 8889 23358 386682 366739 256 8 9564 18263 573946 579209 256 16 48539 88740 879535 914752 256 32 51126 117006 1184092 1123389 256 64 20240 157537 1071806 1334162 256 128 32753 47593 1345868 1740810 256 256 51832 171584 1952947 1855098 512 4 7956 12706 345710 261607 512 8 24997 12745 510478 539459 512 16 17195 73121 859060 799865 512 32 74010 81632 1125040 1084694 512 64 46989 122756 1380303 1118011 512 128 35927 129649 1305615 1645826 512 256 71437 231664 1770674 70444 512 512 69265 211557 1954379 1619757 1024 4 6901 20169 91673 341200 1024 8 28576 11314 707712 296474 1024 16 31138 25737 256756 764799 1024 32 24918 45884 346401 831100 1024 64 98330 113163 600207 1352828 1024 128 42987 173563 1568189 609577 1024 256 113612 147721 1711956 1556257 1024 512 55312 36809 1869160 690864 2048 4 8828 12041 226899 119472 2048 8 18950 29697 627469 632272 2048 16 26894 53164 617234 348295 2048 32 67063 68598 1095262 850504 2048 64 78908 120718 1385516 1379287 2048 128 132035 109600 611174 1227167 2048 256 52194 151849 1634681 454018 2048 512 59004 102987 1016343 1807720 4096 4 17839 16581 247239 273374 4096 8 23594 21692 168685 202102 4096 16 26094 36230 270916 865972 4096 32 40587 83591 783188 936395 4096 64 61537 85215 1373092 1182144 4096 128 48997 46885 628222 1531891 4096 256 51746 70502 1360802 1666523 4096 512 78598 120247 318087 1275624 8192 4 9372 13727 89836 112461 8192 8 15033 22932 181801 224352 8192 16 35504 43339 512282 442143 8192 32 30842 44685 752120 546165 8192 64 77727 67974 1185030 1200641 8192 128 85134 83000 1506424 1174820 8192 256 48837 114574 1640646 1297190 8192 512 48290 54586 1288048 501405 16384 4 10662 13231 179253 241342 16384 8 27536 31835 483988 507683 16384 16 46493 47821 573767 466116 16384 32 49500 61037 461443 417288 16384 64 57416 62935 948262 1083377 16384 128 69423 71840 369901 587452 16384 256 117973 145992 1423948 1067639 16384 512 56485 88840 1028060 1327199 32768 4 11030 13165 145905 204590 32768 8 21652 22102 231734 164075 32768 16 31619 39292 736855 770484 32768 32 49147 56193 476492 845649 32768 64 79065 68452 630749 565071 32768 128 55519 55328 893326 1560231 32768 256 68926 95863 1333713 1388008 32768 512 75845 75290 924787 999150 65536 4 12081 12531 259953 177139 65536 8 22674 25124 384645 283555 65536 16 36894 30073 527698 333525 65536 32