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 14:14:31 2025 Auto Mode Machine = Linux oleg327-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-oleg327-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 10515 19394 289635 163699 64 8 15729 29820 400168 284418 64 16 8138 51278 524487 538156 64 32 21004 67095 916769 603489 64 64 21933 91559 1066042 1484662 128 4 16122 24366 268327 224087 128 8 25452 39517 436904 367768 128 16 28602 54750 677178 659704 128 32 17306 80868 673778 864797 128 64 41816 110928 953918 1067750 128 128 42639 127347 826202 1487977 256 4 17040 21659 308121 267245 256 8 22656 34571 479390 394496 256 16 22851 66548 800221 636553 256 32 44236 76440 1075025 910872 256 64 51218 131896 1163562 962301 256 128 59231 136750 1368162 1525622 256 256 51045 112932 1579483 2223962 512 4 17411 20625 274656 231339 512 8 29736 35786 455476 402240 512 16 32584 57143 649806 622855 512 32 35975 77131 524056 393830 512 64 60620 134177 1024169 958781 512 128 71547 137335 1524329 1185272 512 256 82025 149060 2275345 1361057 512 512 71810 171636 1383861 2357784 1024 4 18685 20424 378417 268338 1024 8 28281 32812 389820 399985 1024 16 48095 56731 388762 518227 1024 32 63519 93057 1469467 887425 1024 64 69684 128870 1220575 972635 1024 128 99042 154524 1120580 1347311 1024 256 91460 148703 1646334 1424152 1024 512 96814 172997 1454537 1582636 2048 4 19159 20151 317020 257996 2048 8 31156 32329 446768 440446 2048 16 46489 63202 713105 611914 2048 32 63641 78434 852277 808859 2048 64 72911 91694 1180454 979378 2048 128 70485 137073 1454489 1251847 2048 256 96558 118841 1589020 1487227 2048 512 98155 149695 1812296 1587551 4096 4 19371 20802 284699 289897 4096 8 31087 36688 441769 423934 4096 16 50864 54983 601561 541869 4096 32 50592 72548 867065 938185 4096 64 63989 94091 840551 976195 4096 128 68392 109688 634533 1213627 4096 256 99368 154193 1906162 1545118 4096 512 90421 155529 1798034 1641053 8192 4 19350 20110 290692 276860 8192 8 31256 36267 546496 458528 8192 16 51951 59244 623206 587699 8192 32 69193 89719 885724 846198 8192 64 87110 118439 1273441 927017 8192 128 93777 123626 1456056 1197294 8192 256 106087 149357 2016202 1492746 8192 512 100946 158116 1825334 1494629 16384 4 20127 21558 298688 259897 16384 8 32180 37046 527002 509169 16384 16 52221 60589 871766 707268 16384 32 74308 90479 1108078 920706 16384 64 87118 116385 1203729 1089802 16384 128 98930 131386 1574336 1437080 16384 256 98887 153077 1675234 1474040 16384 512 98356 155658 1534231 1401042 32768 4 19857 21221 303581 288623 32768 8 32410 35772 478240 444408 32768 16 48766 59339 800195 603918 32768 32