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 7 21:31:39 2026 Auto Mode Machine = Linux oleg160-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-oleg160-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 6719 13050 666414 886494 64 8 11971 33334 695778 444572 64 16 14420 58664 1049372 1392258 64 32 10202 49346 1947927 1017549 64 64 9482 134163 1562436 3203069 128 4 9805 19814 1172704 249497 128 8 11101 38836 814915 643108 128 16 6087 25589 753179 934004 128 32 13989 99295 1363288 992724 128 64 21362 97794 1663139 1421023 128 128 8776 120894 287742 2969325 256 4 7033 10425 260187 300784 256 8 16564 29629 638066 721210 256 16 19111 62653 1122215 1243036 256 32 7629 65604 1430119 1153561 256 64 12097 49775 1312954 1237306 256 128 9587 37913 2463808 2285501 256 256 27479 84269 1729594 2081678 512 4 4638 6022 800163 403449 512 8 14124 18619 1580419 806171 512 16 22488 36668 671759 338623 512 32 26855 60670 616065 434994 512 64 12956 56730 294951 321826 512 128 35150 138611 896725 1176828 512 256 20387 84083 911184 1524329 512 512 13022 35131 1406520 1198502 1024 4 5490 6146 97960 124814 1024 8 7608 15608 1149061 738372 1024 16 31991 50470 1556257 1105865 1024 32 55901 72727 2155236 957030 1024 64 65048 134151 2065081 716089 1024 128 56295 35155 1207534 1324868 1024 256 94665 92636 566110 2094282 1024 512 36858 58776 705271 1695065 2048 4 11712 14260 486576 333449 2048 8 25178 13139 385029 385911 2048 16 22990 20151 834557 302198 2048 32 10830 32764 1258634 641815 2048 64 25752 57042 791932 648306 2048 128 41659 43961 445309 1121576 2048 256 30563 46246 813686 554410 2048 512 15769 40519 215287 652641 4096 4 6226 5097 386239 311174 4096 8 12661 9800 371860 114291 4096 16 17575 21180 588678 644314 4096 32 17594 26985 1356719 1063123 4096 64 24512 48126 832003 426799 4096 128 41322 49305 1527261 1744360 4096 256 42725 76522 889098 760043 4096 512 38919 58662 1006388 1537512 8192 4 7045 5736 469807 290218 8192 8 12282 12380 934506 659954 8192 16 18486 16677 257457 425513 8192 32 18952 33238 879917 705179 8192 64 34583 41796 482534 555014 8192 128 34332 46335 885040 518545 8192 256 41211 62573 1380973 838066 8192 512 43783 84593 1522106 635094 16384 4 8046 8552 468634 272213 16384 8 10499 15889 533160 589159 16384 16 14983 17235 835070 543362 16384 32 23605 31024 659687 558228 16384 64 27213 38649 866141 684553 16384 128 25658 60714 768908 828057 16384 256 36790 67268 453939 545987 16384 512 37737 53973 872419 596498 32768 4 6996 7335 266683 223010 32768 8 10728 14950 438045 451057 32768 16 20322 34052 428665 874606 32768 32 25511 31495 621654 655845 32768 64 30878 33165 636457 271473 32768 128 25782 31477 1170412 705492 32768 256 22955 46324 986754 624569 32768 512 24200 55112 931544 899523 65536 4