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: Sat Sep 12 22:17:55 2026 Auto Mode Machine = Linux oleg126-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-oleg126-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 3411 7214 640954 557144 64 8 2478 13885 913649 647135 64 16 1479 8710 1124074 1017549 64 32 1384 49048 2006158 1304314 64 64 2927 36076 1392258 1638743 128 4 4583 8884 595328 564055 128 8 3087 4346 940549 735635 128 16 2709 7650 1121270 971174 128 32 5352 30137 1142750 246632 128 64 3433 12690 1172704 1508887 128 128 3557 45844 1455701 1967960 256 4 2038 4475 383779 516022 256 8 4299 7464 33627 656399 256 16 5807 10360 189345 842278 256 32 10542 45608 1112909 1098113 256 64 5196 30585 937106 1028679 256 128 6506 59052 1376935 700964 256 256 7540 42015 1652404 624339 512 4 5311 10139 425597 416598 512 8 12101 9438 796306 828566 512 16 5382 21439 603767 682649 512 32 5690 21844 1120344 563229 512 64 9045 41400 738777 1391933 512 128 11826 32445 1446306 1429934 512 256 23836 57193 1770674 765371 512 512 24554 61545 1501940 489532 1024 4 6389 5711 257232 269601 1024 8 14856 21643 945443 218519 1024 16 8797 19108 973516 455274 1024 32 13260 32568 1267024 329904 1024 64 15103 31226 788964 767122 1024 128 15436 27437 1643814 753528 1024 256 36843 70242 867003 861266 1024 512 28435 82454 882139 823136 2048 4 5416 6718 183362 277624 2048 8 9170 17511 651601 1079028 2048 16 16039 24756 477595 763902 2048 32 24987 19167 311672 566401 2048 64 26102 44275 1066171 536709 2048 128 33853 64869 536843 640571 2048 256 60669 68600 1674514 1430033 2048 512 23073 37978 834232 495874 4096 4 6216 6163 166714 190283 4096 8 6201 8892 420314 421097 4096 16 9039 14318 310628 349065 4096 32 12464 25192 316220 604482 4096 64 26200 34689 914513 579934 4096 128 42747 56005 656426 1337287 4096 256 24233 39455 1347778 1425738 4096 512 40212 71898 757696 430618 8192 4 5581 1728 193404 152713 8192 8 10148 12688 608882 328823 8192 16 18294 17670 324228 365273 8192 32 18016 20189 692069 364347 8192 64 15782 23097 976994 485623 8192 128 17991 28446 1106885 982273 8192 256 24994 33096 797361 313487 8192 512 29707 38537 1150085 635141 16384 4 5358 6596 244537 225840 16384 8 7773 9758 571368 545787 16384 16 17023 13297 577329 492278 16384 32 19074 20205 739445 356499 16384 64 20106 31920 708442 779408 16384 128 28161 42628 1624120 1001583 16384 256 28251 35178 422029 468851 16384 512 32768 48196 851692 851734 32768 4 6279 7948 372274 331334 32768 8 11992 9768 573570 536071 32768 16 14680 15049 269433 289874 32768 32 22393 22563 444270 525515 32768 64