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 16:08:14 2025 Auto Mode Machine = Linux oleg148-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-oleg148-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 6808 19765 164906 152710 64 8 7623 20644 489126 546928 64 16 8166 43656 645579 230257 64 32 19856 68151 1304314 743988 64 64 12586 135245 1188789 743988 128 4 9037 18669 321709 211549 128 8 9368 36373 589446 546819 128 16 23201 57525 805138 809997 128 32 16623 86081 366763 1017175 128 64 15653 42895 1294270 1152564 128 128 17311 165557 1030846 1603529 256 4 10162 12182 174512 233381 256 8 20356 9778 165476 102939 256 16 25607 30198 376512 783292 256 32 21632 111017 856386 362529 256 64 41356 76669 635047 534517 256 128 42546 103515 1391207 1178892 256 256 17013 69467 1881098 1729594 512 4 16869 16781 353099 250733 512 8 22736 37415 521891 359002 512 16 34613 69554 881269 806474 512 32 25262 33742 909255 418628 512 64 45386 56444 609421 1042566 512 128 27114 56239 906185 1340664 512 256 84653 225462 1829505 1992458 512 512 21500 179468 1113374 1815584 1024 4 10983 9210 277581 239356 1024 8 15510 31314 326122 384103 1024 16 29361 48688 259173 631352 1024 32 18300 30526 469713 870694 1024 64 20075 70733 905384 546725 1024 128 64153 120456 1248970 252025 1024 256 66754 31191 957030 947320 1024 512 34913 120557 1568189 884319 2048 4 9305 9477 190035 219176 2048 8 18943 17135 432441 145785 2048 16 16805 35530 619862 545676 2048 32 38875 43479 761059 729828 2048 64 67125 56612 807567 824781 2048 128 74288 97412 394670 612263 2048 256 81825 58571 354636 426854 2048 512 35037 169270 813995 776610 4096 4 10565 9324 153448 272377 4096 8 9768 16003 429982 363804 4096 16 34103 29881 300758 553068 4096 32 33900 47301 265577 475346 4096 64 29757 40634 649232 596485 4096 128 49404 124801 236915 810111 4096 256 52755 48848 858358 1000236 4096 512 73722 55615 451000 1109466 8192 4 11805 11989 218132 83160 8192 8 20410 18258 302622 381466 8192 16 28798 35988 481655 204994 8192 32 33399 38076 708042 542055 8192 64 44109 78900 830912 758663 8192 128 57002 82892 797435 736625 8192 256 56973 70901 722149 673683 8192 512 60583 99648 689901 832503 16384 4 10896 12921 138027 127494 16384 8 19341 20194 252111 222990 16384 16 25917 38653 498770 279495 16384 32 40155 49931 603062 711044 16384 64 44528 47621 591029 552563 16384 128 53519 92797 758168 731627 16384 256 75441 96647 809208 588549 16384 512 79160 100506 403824 610661 32768 4 12258 13575 185028 161922 32768 8 22303 22957 297999 239348 32768 16 32639 33680 339930 599686 32768 32 44436 40581 453354 539685 32768 64 38139 55701 544175 530519 32768 128 55258 66011 664933 808032 32768 256 57347 74111 798655 863175 32768 512 61325 100862 764501 1027213 65536 4 11077 10901 182626 184839 65536 8