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: Wed Sep 24 14:14:37 2025 Auto Mode Machine = Linux oleg116-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-oleg116-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 1418 4127 94393 293434 64 8 3938 27788 460591 270108 64 16 5917 37760 653436 566551 64 32 6907 63492 874936 771797 64 64 7063 77564 1013707 1357066 128 4 4366 6363 242839 28642 128 8 6742 17491 512376 407707 128 16 2116 43240 503723 576780 128 32 7893 70997 1057236 329004 128 64 17832 85112 955616 1076312 128 128 11831 89765 1406136 1391557 256 4 11411 16896 262605 276751 256 8 12410 8487 471600 370536 256 16 22802 46350 668246 569985 256 32 12547 47513 844929 941213 256 64 22407 84488 1201314 1163562 256 128 23281 52836 1019886 1375171 256 256 13678 85449 1662639 2081678 512 4 2725 9054 237479 50693 512 8 15154 10427 405353 434994 512 16 23220 42289 468085 622133 512 32 26879 71609 920953 837942 512 64 28403 88673 1216149 967855 512 128 16151 105197 1500891 1177473 512 256 40754 109143 1668848 1789859 512 512 29817 130913 1551867 2180616 1024 4 13366 16278 113186 212940 1024 8 17448 25844 474068 375933 1024 16 33024 48507 707245 696578 1024 32 12683 43288 920125 515366 1024 64 40306 95264 1196434 1041758 1024 128 50542 55039 1319577 697483 1024 256 31929 57690 864212 1331853 1024 512 39239 28199 1620249 1670669 2048 4 3840 9364 49294 109477 2048 8 7306 9980 160704 214112 2048 16 9020 15865 753780 631343 2048 32 20394 20177 870412 629584 2048 64 40076 37356 1152422 759042 2048 128 50787 26308 1042745 1211077 2048 256 18122 24610 1639674 647915 2048 512 48740 26874 453802 1569566 4096 4 5665 3994 152404 131434 4096 8 10248 15586 130662 252512 4096 16 12571 13923 186715 229687 4096 32 21146 23636 983910 246582 4096 64 14695 68666 345103 201375 4096 128 34465 31372 461888 249679 4096 256 59526 46252 339860 212118 4096 512 35238 39425 566528 806006 8192 4 6248 9073 98323 245614 8192 8 2998 23877 424787 440572 8192 16 19992 27961 628610 397784 8192 32 22510 33316 914192 705223 8192 64 38273 73271 875679 875121 8192 128 36129 78169 1067510 914167 8192 256 55057 34519 568297 258741 8192 512 34329 23558 839254 1180917 16384 4 6027 5167 125153 121095 16384 8 7032 11099 186285 138808 16384 16 18262 19838 233340 219031 16384 32 17862 39967 722011 638254 16384 64 25847 29824 234297 624417 16384 128 31362 39241 1094524 838402 16384 256 30984 64657 1142377 1090165 16384 512 43173 44336 1667753 753182 32768 4 7618 10338 216999 183207 32768 8 17033 19891 347347 255363 32768 16 18884 20460 437122 299114 32768 32 26120 30275 486107 546234 32768 64 27650 34642 864794 848871 32768 128 31477 39939 671942 389840 32768 256 30928 59332 1054984 1177602 32768 512 48417 49486 676423 601568 65536 4