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 16:40:24 2025 Auto Mode Machine = Linux oleg152-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-oleg152-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 12531 27211 33026 314030 64 8 6976 25994 44875 515423 64 16 29836 52885 681644 150569 64 32 12835 50148 1452528 987600 64 64 16623 133895 1526887 1562436 128 4 7104 21336 331441 336848 128 8 13106 31564 496272 450846 128 16 13142 61774 767171 687585 128 32 17336 87313 1142750 285599 128 64 17498 55025 146613 1281909 128 128 16092 124772 1185654 483316 256 4 8296 9914 210010 234451 256 8 13049 41611 478536 253971 256 16 14926 41290 773140 770920 256 32 70138 65504 520272 662883 256 64 43301 107204 1219045 721210 256 128 59081 150072 1829808 293227 256 256 116258 307679 944525 2097948 512 4 12361 11127 152652 183910 512 8 25673 19693 583110 510964 512 16 44939 46330 839252 505432 512 32 75872 61135 1015932 1207261 512 64 57683 110298 922535 1242177 512 128 54817 174694 1801873 949875 512 256 87778 85875 559560 709254 512 512 71858 142143 1645826 1983258 1024 4 11394 18344 182238 235240 1024 8 16862 34628 344899 384103 1024 16 24782 33481 745291 539785 1024 32 45152 41908 1019744 1197435 1024 64 107179 63429 1055843 947320 1024 128 55312 59149 823926 1239956 1024 256 71339 74019 1258117 1402756 1024 512 70762 184200 471880 1127641 2048 4 10607 16067 113577 134755 2048 8 20293 26270 433161 273505 2048 16 40794 55274 652442 620220 2048 32 49146 59200 884665 910644 2048 64 63079 106300 1045410 1194239 2048 128 37388 67046 927558 897889 2048 256 56255 125061 975263 1391351 2048 512 78419 97385 529497 239368 4096 4 15209 12959 144795 251856 4096 8 23216 20645 208213 496487 4096 16 40931 52357 467902 287944 4096 32 36831 52159 554407 894700 4096 64 43539 58972 838500 338928 4096 128 51205 87228 611801 953917 4096 256 73429 68043 814489 360726 4096 512 76073 95555 939005 836092 8192 4 12672 13030 96813 101168 8192 8 18015 23362 223568 388119 8192 16 28911 26261 315548 283805 8192 32 46649 46953 415480 587026 8192 64 55937 65277 814061 404804 8192 128 62219 59993 852011 301399 8192 256 85422 73799 835824 1214691 8192 512 50318 74113 1275805 1016385 16384 4 5158 14311 240576 154136 16384 8 22034 19836 370693 179515 16384 16 32152 28528 485091 384086 16384 32 43512 39491 398268 642485 16384 64 42779 65173 391953 650107 16384 128 60226 76961 336903 428621 16384 256 64587 58728 799921 594311 16384 512 60295 73735 531272 719637 32768 4 11968 18683 235880 231785 32768 8 23844 24034 304861 226826 32768 16 33994 41246 500511 354620 32768 32 56270 67425 364693 546023 32768 64 77353 97960 846299 702678 32768 128 86129 97999 441688 896940 32768 256 88114 79210 1045761 1028112 32768 512 64256 96455 1266779 1077582 65536 4 14003 16131 218572 258203 65536 8 25041 33049 390679 342903 65536 16 38015 38573 417495 408634 65536 32 49594 53719 441364 474702 65536 64 62553 71363