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: Thu May 1 15:41:51 2025 Auto Mode Machine = Linux oleg128-client.virtnet 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:2 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-oleg128-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 8481 12960 153058 394870 64 8 11651 35692 507625 508587 64 16 7283 41859 627470 754443 64 32 15567 24483 998622 863676 64 64 9413 130892 1421755 1363961 128 4 9393 21636 320940 382167 128 8 12568 33693 615109 564055 128 16 6126 7338 687585 805138 128 32 10548 105438 1093856 1102844 128 64 11569 37604 1332828 1007629 128 128 7691 133324 1436229 1487977 256 4 11693 12117 393917 238566 256 8 9764 15332 323240 517016 256 16 14000 19871 488551 666586 256 32 31542 85104 74920 557844 256 64 18950 89636 1062263 1190657 256 128 25348 100351 1384034 1163562 256 256 56400 138461 1649865 1938842 512 4 10333 18725 292899 215032 512 8 11022 12637 201173 232617 512 16 14639 24829 117510 671129 512 32 38585 28620 169309 616065 512 64 52783 82927 262310 792486 512 128 18653 101082 803757 1364516 512 256 81206 110038 1551867 1488408 512 512 39137 180221 1789859 1483267 1024 4 12272 16913 293496 194855 1024 8 8254 35908 258129 322619 1024 16 22684 49169 374393 575285 1024 32 46681 55190 337394 226196 1024 64 61780 33162 1102459 712998 1024 128 60118 70027 834491 223535 1024 256 57177 82473 1454537 554704 1024 512 34907 175463 1597351 1532928 2048 4 8513 9534 274238 112206 2048 8 19938 21752 318998 316541 2048 16 20522 34401 446977 253623 2048 32 34655 44839 290536 183597 2048 64 25914 98273 546127 381880 2048 128 54237 40390 121067 397207 2048 256 26578 145743 1062216 1085848 2048 512 42988 32660 1551704 1566989 4096 4 11215 9962 252917 227744 4096 8 16483 18523 325543 267450 4096 16 23224 19298 473251 560942 4096 32 37825 54800 575833 700281 4096 64 55787 40794 908997 734973 4096 128 48800 49444 988894 1263801 4096 256 41844 122221 1193062 1106180 4096 512 46406 59622 235754 349968 8192 4 2481 9275 177901 283048 8192 8 17608 15000 228222 441450 8192 16 23841 28604 256884 344666 8192 32 36418 34104 579883 508409 8192 64 28740 61485 534301 878770 8192 128 37798 47841 460402 526749 8192 256 54119 63670 1096500 720559 8192 512 59265 51402 334506 407217 16384 4 9837 10057 158084 235462 16384 8 16482 15630 194597 100905 16384 16 24406 24038 283318 177914 16384 32 25148 30860 595345 663694 16384 64 32057 36891 236574 395902 16384 128 32929 47183 628730 408415 16384 256 30265 57219 318928 880524 16384 512 46906 79931 499480 1022401 32768 4 9036 10604 134670 147739 32768 8 16024 14557 192630 219518 32768 16 27477 29985 421931 352772 32768 32 32770 35641 735680 383013 32768 64 31439 38141 613438 363269 32768 128 41057 62413 839000 757081 32768 256 62441 59432 477083 810988 32768 512 59113 84885 595415 889948 65536 4