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 Sep 8 03:12:16 2026 Auto Mode Machine = Linux oleg341-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-oleg341-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 2057 7609 520419 496362 64 8 1330 28457 727850 278227 64 16 2181 6526 735831 771797 64 32 3505 15571 1087638 236965 64 64 6290 42135 1143223 1599680 128 4 3480 7426 670413 579270 128 8 11554 39082 819893 677178 128 16 6897 30204 637004 136199 128 32 8349 71594 1172704 1022989 128 64 3912 9877 1618028 1266785 128 128 9939 110631 1539168 2035099 256 4 3104 3680 596587 130612 256 8 7760 7576 684432 494172 256 16 9465 14797 1036624 691930 256 32 21071 32606 1248819 1032636 256 64 3729 9418 947860 825443 256 128 20816 71808 910872 1413179 256 256 12998 21483 1481420 2049885 512 4 2688 12638 586454 563968 512 8 4862 10348 750919 472721 512 16 13250 32098 291428 572081 512 32 13581 26376 1230786 899731 512 64 9463 29021 1334001 1125040 512 128 13844 59680 715159 391747 512 256 22079 62552 1689859 1372364 512 512 10512 63273 1333173 2116152 1024 4 10796 16094 247223 257680 1024 8 7225 8464 111399 734583 1024 16 9661 13694 629778 864038 1024 32 35759 28739 959596 814087 1024 64 16083 25695 1289855 1192117 1024 128 35811 81321 827896 212582 1024 256 13838 63523 588851 1034232 1024 512 13470 80973 624014 1594978 2048 4 4737 6698 136944 265869 2048 8 13977 14591 234193 428109 2048 16 12786 20620 570312 338963 2048 32 14393 32383 445401 446490 2048 64 20632 29719 481314 531101 2048 128 25995 29729 906129 324825 2048 256 29225 39861 1436250 436573 2048 512 16875 26446 1867050 1784066 4096 4 3179 4086 105692 51356 4096 8 5799 9631 216628 266599 4096 16 13760 26649 342844 342707 4096 32 7564 15922 625067 479284 4096 64 11471 18704 203589 344549 4096 128 26974 33364 1397441 267121 4096 256 23799 35700 849403 592842 4096 512 25238 35713 1848330 458572 8192 4 3136 4071 182669 176990 8192 8 8506 10237 265191 253757 8192 16 22437 15493 488899 224697 8192 32 16632 30300 809248 636718 8192 64 49263 32347 1170777 480073 8192 128 19705 66523 502241 443432 8192 256 21042 39184 348936 1191399 8192 512 24542 38292 459067 532776 16384 4 7034 8896 461068 514294 16384 8 15790 14052 357044 271834 16384 16 17040 21637 390905 300359 16384 32 30411 31044 1194522 368459 16384 64 28857 37585 1295278 503410 16384 128 38549 48691 765644 874095 16384 256 48217 52641 1011803 1068968 16384 512 40573 47848 561847 832047 32768 4 6503 7189 469663 280130 32768 8