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: Fri May 23 17:50:31 2025 Auto Mode Machine = Linux oleg452-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-oleg452-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 12810 22424 592827 451299 64 8 17424 39952 752329 799377 64 16 20751 61066 886494 942521 64 32 23356 85685 1017549 1083249 64 64 24214 107727 1138375 1163036 128 4 13466 23251 546819 600657 128 8 22249 40098 695603 826202 128 16 29143 65802 976473 789741 128 32 35126 94456 1076312 847059 128 64 36707 123197 1152564 1175271 128 128 41263 147499 1206978 901083 256 4 16438 23404 632056 538809 256 8 27000 41430 684432 853662 256 16 40712 66408 802614 1019886 256 32 43699 98882 1003679 966633 256 64 55531 127996 1178892 973645 256 128 64840 151384 1195962 1032636 256 256 67565 173077 1084800 1208072 512 4 18330 23573 579804 593915 512 8 30521 42119 790153 780674 512 16 46014 69755 1005938 895230 512 32 58754 100074 1068503 1130370 512 64 66072 135952 1174897 1013534 512 128 78683 159193 1019791 1105920 512 256 76428 177041 1177473 1089647 512 512 86634 196174 1196499 1221684 1024 4 19698 23454 613583 603411 1024 8 31549 42825 808265 768769 1024 16 44743 95122 930088 967813 1024 32 71046 101586 1050164 1058967 1024 64 87649 128496 1094034 1126458 1024 128 93227 160075 1132697 1105865 1024 256 96494 160680 1135391 1113030 1024 512 106533 170890 1131503 1159609 2048 4 25409 28238 673889 715600 2048 8 32708 39397 778440 793175 2048 16 54614 122854 1994039 1977058 2048 32 82594 172638 2183619 2207184 2048 64 88589 127617 1715309 2019827 2048 128 103340 146749 2288326 1102856 2048 256 106528 138695 1631886 1817281 2048 512 101546 192496 1096381 1150570 4096 4 32376 29975 559699 576896 4096 8 45304 50987 879179 965388 4096 16 60339 70520 880485 963763 4096 32 73206 140940 2207980 2186900 4096 64 180137 220334 1161366 1116097 4096 128 216031 145796 1264173 1629225 4096 256 115854 149948 1140019 1138131 4096 512 250981 271563 1177364 1137829 8192 4 41059 34689 567396 567940 8192 8 56602 55725 1054859 1064995 8192 16 70131 78823 757109 836251 8192 32 97613 120712 905900 996835 8192 64