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: Sun Sep 6 16:22:06 2026 Auto Mode Machine = Linux oleg235-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-oleg235-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 3097 13341 627470 507625 64 8 5490 27634 789967 666414 64 16 4411 28569 230060 821391 64 32 7454 48710 1066042 1087638 64 64 7512 18507 1392258 1562436 128 4 1834 3953 470606 568836 128 8 8047 31495 338547 646205 128 16 8045 31913 795593 795593 128 32 4956 51509 1172704 976473 128 64 5469 91619 1142750 1231904 128 128 11927 109213 1487977 669577 256 4 3766 14581 551823 389629 256 8 5652 4409 321980 729540 256 16 8312 39727 1089202 844929 256 32 14908 57840 775373 891956 256 64 19488 110208 1354356 1463250 256 128 12898 88769 1532153 1361224 256 256 10359 56773 1696795 2310087 512 4 10520 6990 277352 586615 512 8 9052 16231 887094 683518 512 16 5021 23767 1122687 605128 512 32 26451 8191 77599 1150351 512 64 6362 22475 1354190 1239310 512 128 12237 30884 1514652 869143 512 256 16466 32102 103057 1619757 512 512 34378 102276 1566585 765371 1024 4 9931 6584 255868 130813 1024 8 11055 6147 772781 660276 1024 16 15427 30034 219267 975285 1024 32 21865 17499 666733 253842 1024 64 10473 16569 844168 477600 1024 128 10816 54150 882865 383246 1024 256 19558 43825 1577984 493005 1024 512 24512 45944 579242 211524 2048 4 8953 4553 104902 110702 2048 8 4470 14422 816937 570653 2048 16 15729 14483 173928 228038 2048 32 29266 16124 379534 155787 2048 64 16079 32435 751012 1272054 2048 128 27897 48276 607543 270295 2048 256 14209 37700 675691 1753475 2048 512 24184 27386 146349 1499428 4096 4 5204 4016 95835 209128 4096 8 6227 8591 311507 196818 4096 16 9569 16197 361295 309013 4096 32 19959 24502 340736 364313 4096 64 13712 22427 350267 337059 4096 128 16233 77082 803105 604312 4096 256 30385 39011 572551 574312 4096 512 28002 53659 1800295 484570 8192 4 5177 5042 197745 212211 8192 8 7772 6197 289277 585107 8192 16 13233 14314 579805 454278 8192 32 20611 16044 317285 392750 8192 64 15346 29281 765100 685346 8192 128 28751 28927 768987 415415 8192 256 19934 29177 787150 197889 8192 512 29196 29889 770073 644940 16384 4 5739 5479 125135 112117 16384 8 8148 8047 590562 481657 16384 16 17288 19366 777969 564070 16384 32 26761 23085 779187 786715 16384 64 23166 32684 1067772 833066 16384 128 33466 41909 857580 833753 16384 256 30658 37721 1129867 768375 16384 512 42722 57826 1201162 909110 32768 4 6970 6282 163321 205678