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 Sep 25 14:16:11 2025 Auto Mode Machine = Linux oleg246-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-oleg246-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 6478 16758 296349 231848 64 8 5817 26588 303383 285628 64 16 5315 41267 576282 331891 64 32 8357 28457 866463 801764 64 64 9232 80302 877797 1484662 128 4 11026 16024 219506 288360 128 8 15938 27652 306292 223063 128 16 19689 55554 549056 581781 128 32 11739 63177 613002 663782 128 64 20877 85792 1007629 426492 128 128 22069 106589 1363288 1123617 256 4 13162 18236 294918 339920 256 8 20762 32291 358654 460279 256 16 24051 44428 697776 775933 256 32 35905 70368 744204 731030 256 64 40372 98991 1180188 980760 256 128 29550 95275 1020855 1319408 256 256 26251 106218 1319408 2065659 512 4 14634 18196 141591 226939 512 8 21418 30027 410545 411884 512 16 26773 47293 925717 399323 512 32 30930 76924 822851 798972 512 64 38767 80821 1108203 914287 512 128 42949 107246 1537424 1455126 512 256 53311 112481 1610042 1325766 512 512 51158 130945 1506154 1867692 1024 4 15173 18384 261285 214364 1024 8 25644 32324 427580 350901 1024 16 28504 50725 598117 641154 1024 32 43788 78757 644038 445221 1024 64 53103 102062 1167489 966941 1024 128 49100 115509 1304348 1172909 1024 256 53576 102883 1105580 1416636 1024 512 64610 136245 1651398 1528563 2048 4 16371 18852 289390 244332 2048 8 26912 31345 349016 411912 2048 16 43956 53241 733755 658141 2048 32 59553 76170 848740 736145 2048 64 60943 86978 1191423 906990 2048 128 60665 100155 1184523 1095682 2048 256 65871 105462 1593737 1375532 2048 512 76332 111455 1661237 1369829 4096 4 16107 17939 252980 263693 4096 8 23752 28991 352799 434957 4096 16 39208 48816 519330 532844 4096 32 42631 80446 597336 701969 4096 64 57905 80226 1018862 1114576 4096 128 60027 93912 1166333 1043556 4096 256 77851 100431 1455081 1214313 4096 512 79622 111830 1487330 1457180 8192 4 14718 16589 243802 267756 8192 8 26973 32307 445000 435656 8192 16 42266 48359 690040 590497 8192 32 58052 72863 994901 838741 8192 64 66676 82326 1202785 1025914 8192 128 66206 111198 1348296 1147359 8192 256 79621 99947 957474 1250681 8192 512 78267 91895 1655906 1320218 16384 4 16921 18326 267733 268308 16384 8 28155 32460 448493 433151 16384 16