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: Mon Sep 14 19:31:46 2026 Auto Mode Machine = Linux oleg228-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-oleg228-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 3457 4375 546928 520419 64 8 3171 11480 320021 801764 64 16 2650 38028 877797 926260 64 32 4837 56682 582535 939223 64 64 3049 20507 1392258 1734015 128 4 5282 6412 199076 612303 128 8 4628 11963 747933 558771 128 16 6782 20040 450846 1007629 128 32 7460 24893 942199 1022989 128 64 6480 61155 319222 1471662 128 128 12402 95379 1642783 2238774 256 4 5694 9538 457143 580461 256 8 6353 22824 889002 773140 256 16 13906 24146 794889 648079 256 32 15342 36244 1312954 996229 256 64 18723 66755 1413179 944525 256 128 19636 96604 1471270 1514860 256 256 18475 88309 1422540 2065659 512 4 13987 10203 289621 407971 512 8 6988 7860 575300 174922 512 16 16640 10849 1002183 56073 512 32 16666 29165 1210664 382945 512 64 21892 50473 739795 1227971 512 128 15180 65843 1889050 635951 512 256 27081 37060 283017 262150 512 512 9935 46242 377559 1005938 1024 4 9665 12260 235072 221266 1024 8 13641 15913 930894 506971 1024 16 20136 30966 999107 610531 1024 32 17824 14967 912695 1129123 1024 64 31395 28008 1367473 819211 1024 128 24740 58928 1158358 1132697 1024 256 18086 27062 1367473 1156798 1024 512 43028 93346 812086 979734 2048 4 10246 11906 209429 185088 2048 8 10465 12559 917551 817247 2048 16 19156 20597 227175 538256 2048 32 29586 21360 776891 398830 2048 64 29289 51646 1449336 1229274 2048 128 19942 52552 1368956 1345582 2048 256 26803 52247 236163 1065510 2048 512 17605 55590 1745990 630555 4096 4 8074 7794 204810 170212 4096 8 8214 11973 484679 441371 4096 16 31858 16405 259405 527154 4096 32 24039 52802 345415 622869 4096 64 52406 33681 302623 754204 4096 128 57764 72588 721273 852099 4096 256 51396 77076 543017 955402 4096 512 54434 77313 1719567 526008 8192 4 10499 15442 160933 249785 8192 8 20704 21394 489512 438777 8192 16 16518 25582 870091 560135 8192 32 31543 27391 741009 314967 8192 64 33731 46498 712343 554182 8192 128 44369 24432 582893 687651 8192 256 38937 52769 861603 881136 8192 512 50584 126141 1571175 1479759 16384 4 3600 8084 449700 394072 16384 8 10339 9505 364656 295873 16384 16 23865 23076 443266 260171 16384 32 23074 18405 912805 324635 16384 64 18589 33058 459128 432707 16384 128 37053 56134 607085 630368 16384 256 27493 38736 1068336 1213636 16384 512 39742 41020 904539 915761 32768 4 6040 6447 661830 477422 32768 8 16090 18092 943639 764340 32768 16 21270 23308 450560 318429 32768 32 26145 37277 1246874 1145297 32768 64 31370 62265 2054952 1059049 32768 128 38449 44729 847662 518317 32768 256 42288 56912 1066494 784201 32768 512 39740 46638 1338950 859263 65536 4