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: Wed Apr 30 23:30:52 2025 Auto Mode Machine = Linux oleg146-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-oleg146-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 6826 19589 121200 285628 64 8 18002 28815 789967 491815 64 16 6164 54606 695778 674790 64 32 13490 118944 720041 863676 64 64 17039 72163 926260 1310683 128 4 10377 12342 149014 391360 128 8 10936 29566 75426 456986 128 16 19677 57685 771581 490380 128 32 11283 83927 249497 1165070 128 64 31936 102148 1658003 1911894 128 128 21813 119869 1579934 2202044 256 4 12035 15656 311427 236569 256 8 11085 41369 497147 296629 256 16 27041 42489 528727 668246 256 32 26925 66614 544823 230426 256 64 37965 59382 550691 1098113 256 128 39029 89982 714967 613985 256 256 37437 62668 545931 1652404 512 4 11406 16593 199936 145455 512 8 25547 27071 562638 238933 512 16 23416 61171 309890 406658 512 32 46702 64598 882718 566946 512 64 44932 88982 816594 715159 512 128 62784 78758 1257451 401864 512 256 48831 138076 941133 1245058 512 512 61441 121934 2205248 2357784 1024 4 14195 15084 250438 231200 1024 8 13013 24706 392923 388621 1024 16 31440 42069 800582 555277 1024 32 41056 38059 584842 1083546 1024 64 87252 106266 1030263 927677 1024 128 94177 125628 747366 603835 1024 256 84663 137615 246400 1393200 1024 512 44060 156119 1625154 1530742 2048 4 14182 11507 238411 191958 2048 8 19301 17135 367880 435555 2048 16 28155 27212 516010 541377 2048 32 31108 39034 208854 849075 2048 64 52780 70363 897420 1077809 2048 128 63909 126914 682618 558629 2048 256 57128 131451 1307885 1229979 2048 512 50732 131687 1360931 1556202 4096 4 12170 14935 148385 219425 4096 8 23204 16534 275655 280933 4096 16 36995 35929 224673 658514 4096 32 42375 43534 543309 447837 4096 64 69645 72606 889650 693553 4096 128 78818 84901 702917 775761 4096 256 54684 85536 1000469 878055 4096 512 60165 84010 1052120 496674 8192 4 13795 12757 157650 155617 8192 8 20959 21922 275287 290866 8192 16 30672 37050 617794 272141 8192 32 36668 57692 811427 578575 8192 64 52492 60887 759922 608074 8192 128 48841 91136 469268 1164784 8192 256 64776 3701 615249 1218654 8192 512 60146 111828 798213 503721 16384 4 13921 13228 203687 221960 16384 8 17328 16598 233843 318550 16384 16 29712 26936 453510 251972 16384 32 37160 40566 321809 472133 16384 64 41234 64056 560907 308200 16384 128 53015 67505 668166 484777 16384 256 75183 61150 504589 515092 16384 512 53945 89339 785008 665391 32768 4 11104 12663 225718 217294 32768 8 19134 19374 176034 322491 32768 16 33139 37877 409651 486690 32768 32 47696 39039 469307 453117 32768 64 52376 54076 291784 404388 32768 128 52200 69167 331130 349138 32768 256 69158 82456 839881 804895 32768 512 60601 98177 1034668 810687 65536 4 12643 11918 171634 199124 65536 8 20230 23424 383650 337851 65536 16