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 Sep 4 04:35:25 2026 Auto Mode Machine = Linux oleg214-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-oleg214-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 3713 5690 582535 467002 64 8 2639 7951 673098 760859 64 16 3036 12531 1049372 831569 64 32 3225 21024 1304314 983980 64 64 1770 9563 444572 1562436 128 4 1915 5690 630273 576161 128 8 6993 15404 857887 853794 128 16 8124 23659 706589 889145 128 32 8282 53784 574312 1196221 128 64 4388 81420 587511 1455701 128 128 12300 90905 356533 2166499 256 4 6971 7900 602276 585845 256 8 7546 19561 663292 536923 256 16 11392 35343 1201314 498995 256 32 7212 36143 492360 547044 256 64 10621 35889 435452 996229 256 128 13715 55075 1543163 1463250 256 256 7106 56575 1842366 339061 512 4 4449 6389 636705 542868 512 8 11974 18583 343388 351654 512 16 16077 13934 707152 920953 512 32 13306 22500 420678 1273106 512 64 15485 17552 598217 1190529 512 128 10183 21822 1968713 1565443 512 256 13498 92852 484015 820337 512 512 6954 44336 1479181 1695195 1024 4 7046 11994 170382 245443 1024 8 5106 3952 209492 525390 1024 16 11338 13920 1171629 84266 1024 32 19567 29475 591935 979958 1024 64 8703 47448 817185 543198 1024 128 21060 73106 999107 1053512 1024 256 54806 75650 1654579 1548960 1024 512 36790 98047 1113030 917570 2048 4 5600 11794 573664 113350 2048 8 17548 16355 1311879 459507 2048 16 8235 26720 726249 325440 2048 32 13477 21656 988393 733755 2048 64 11979 24589 405457 399386 2048 128 16977 26847 506696 1316302 2048 256 26855 34884 721855 545849 2048 512 20575 29944 835937 774020 4096 4 4017 5067 222017 131852 4096 8 6630 13877 412275 464612 4096 16 14565 12117 477938 557194 4096 32 17918 23623 409602 385537 4096 64 17763 40953 997043 181392 4096 128 29877 30979 644217 409104 4096 256 27834 41761 740549 767341 4096 512 30169 71248 486174 749891 8192 4 3848 5360 219037 191482 8192 8 7530 9428 371855 289931 8192 16 10513 15662 539189 545593 8192 32 19557 28037 513507 313304 8192 64 19991 28573 611156 571312 8192 128 24082 45377 834991 343018 8192 256 29909 30026 618505 325296 8192 512 36342 33945 461292 416326 16384 4 4246 5382 147441 136302 16384 8 8048 9352 492454 290137 16384 16 25929 29177 358237 345727 16384 32 22987 50155 542641 517958 16384 64 18522 22507 662217 488884 16384 128 20206 33228 894658 639573 16384 256 34626 30772 344208 534462 16384 512 34725 32298 522351 501405 32768 4 4138 4917 240679 173152 32768 8 7468 8861 229252 207448 32768 16