Iozone: Performance Test of File I/O Version $Revision: 3.394 $ Compiled for 64 bit mode. Build: linux 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. Ben England. Run began: Thu Sep 27 13:07:44 2012 Auto Mode Include close in write timing Include fsync in write timing Using minimum file size of 524288 kilobytes. Using maximum file size of 16777216 kilobytes. Using Minimum Record Size 4 KB Using Maximum Record Size 16384 KB Excel chart generation enabled Cross over of record size disabled. Command line used: iozone -a -c -e -i 0 -i 1 -i 2 -n 512M -g 16G -y 4K -q 16M -R -z 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 524288 4 99447 110641 50190 48518 119549 345 524288 8 85952 116021 99469 92325 204436 755 524288 16 85317 112755 161581 161709 322227 1501 524288 32 102311 132396 267329 267351 445405 3064 524288 64 108233 127507 393879 394293 558466 5834 524288 128 112457 133362 516760 517588 644505 7469 524288 256 126109 149024 605599 606125 680157 9657 524288 512 124954 144417 840606 2656425 2760425 45165 524288 1024 124142 135447 590407 590418 638653 58860 524288 2048 119376 130684 614081 2778860 2816452 111031 524288 4096 119327 123533 575909 576175 581384 136303 524288 8192 122140 147370 577159 576525 579117 148378 524288 16384 117704 136180 552463 552814 553000 131450 1048576 4 63264 69706 48231 48334 116644 311 1048576 8 70894 104324 92942 91543 205731 702 1048576 16 100187 115218 164158 164214 319306 1485 1048576 32 113150 136924 272576 271436 454408 3284 1048576 64 109531 134433 791644 1445647 1797978 5944 1048576 128 117703 145255 489810 489241 597949 7555 1048576 256 117464 137405 589547 588007 661515 9927 1048576 512 93261 140061 692888 692946 741950 37627 1048576 1024 125468 141480 1015264 2875040 3105833 54328 1048576 2048 119274 134337 577116 577200 588884 99923 1048576 4096 109960 140264 560272 560223 564470 134231 1048576 8192 123882 128480 535531 534965 537087 135308 1048576 16384 126061 139273 1053450 2130732 2134988 159697 2097152 4 64940 69246 49452 49570 120010 392 2097152 8 85364 98444 412200 429366 838622 810 2097152 16 102346 112734 162935 162910 313325 1691 2097152 32 111588 123356 962721 1251532 1895439 3129 2097152 64 112154 131919 380437 381667 533239 5503 2097152 128 100409 135725 501370 502732 609079 7397 2097152 256 56592 133117 600521 600917 666951 9685 2097152 512 120756 139379 664852 665044 708129 41444 2097152 1024 127719 131350 580392 579732 625374 52710 2097152 2048 119076 132864 560882 560878 571956 95942 2097152 4096 111899 134685 547131 547097 552599 133282 2097152 8192 115493 137898 1100316 1497550 1498754 137496 2097152 16384 119083 139941 555257 555380 556305 133518 4194304 4 61607 73151 49168 49199 118290 487 4194304 8 81620 96498 423508 445918 871994 899 4194304 16 98755 111869 161441 162865 314283 1777 4194304 32 108937 125727 262106 263549 437454 3180 4194304 64 114474 131503 380357 381135 522862 5742 4194304 128 117268 134724 499958 499697 606346 7638 4194304 256 121120 144537 598812 598087 672957 9661 4194304 512 123474 142969 667806 668350 707347 38156 4194304 1024 120359 141821 581889 581225 622350 56116 4194304 2048 117749 134582 571291 571452 580105 97801 4194304 4096 114752 135419 557019 556877 803109 132512 4194304 8192 120062 139211 553447 553507 553713 133519 4194304 16384 110308 134087 544987 545041 1494464 137291 8388608 4 58633 76058 235908 237981 143392 554 8388608 8 89710 95537 91588 91433 737171 962 8388608 16 101459 121596 680586 711055 1145718 1785 8388608 32 110158 126721 266448 266574 952689 3113 8388608 64 117908 138903 379823 379724 526909 5717 8388608 128 119070 140265 507914 507996