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: Tue Apr 1 04:02:18 2025 Auto Mode Machine = Linux oleg641-client.virtnet 4.18.0rh8.10-debug #7 SMP Sat Jan 18 21 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-oleg641-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 2308 9523 167061 109798 64 8 1961 8529 214096 247907 64 16 2411 25415 407457 234481 64 32 3084 33525 633392 571375 64 64 3386 47545 695778 1066042 128 4 4162 7352 149679 142224 128 8 1618 9085 274641 233137 128 16 3835 10548 423798 241963 128 32 5035 24629 681476 558771 128 64 7600 43008 794416 1007629 128 128 4405 56915 864797 1451764 256 4 4321 2808 177307 109590 256 8 7268 17100 276466 261772 256 16 4124 9509 51036 329085 256 32 12826 38404 708831 321594 256 64 12485 52383 859127 651619 256 128 6678 27003 1027695 146270 256 256 7743 34895 969251 1479379 512 4 1812 5384 100275 127615 512 8 2863 9811 177966 247725 512 16 4768 23628 479049 298352 512 32 13533 26657 545766 530530 512 64 6158 22030 105824 639169 512 128 19984 51618 574684 793951 512 256 13819 21052 884172 855978 512 512 7258 61046 192706 1463057 1024 4 2490 3382 78450 63115 1024 8 7014 7897 226088 150765 1024 16 18171 17184 421207 124952 1024 32 25823 35354 442743 535278 1024 64 23900 11241 867704 660174 1024 128 12297 10454 566408 394149 1024 256 6728 22653 1281389 257479 1024 512 12498 21571 1081363 143415 2048 4 3398 3109 68956 120918 2048 8 4575 7761 117870 58838 2048 16 5431 10774 337790 121527 2048 32 13501 34311 472446 438534 2048 64 27747 30756 787142 470712 2048 128 28854 56144 741738 418392 2048 256 21666 16981 1011913 804692 2048 512 14580 14889 1165715 609872 4096 4 3233 2320 56439 54008 4096 8 5427 8197 164571 88827 4096 16 5540 8188 145635 225363 4096 32 16138 15884 304214 383343 4096 64 15443 25432 351802 586647 4096 128 27602 26098 829152 310347 4096 256 36372 34488 317394 665685 4096 512 14948 21815 264668 232989 8192 4 2585 3904 76938 73622 8192 8 6079 8356 270281 248899 8192 16 10581 19673 321633 109603 8192 32 20736 19042 221655 194926 8192 64 22073 28080 409723 216216 8192 128 23814 32791 773035 619531 8192 256 14157 32447 291073 250572 8192 512 18283 36437 924299 526377 16384 4 3764 3231 42829 49980 16384 8 4486 5063 99809 76890 16384 16 8411 7680 369774 135831 16384 32