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: Mon Aug 24 10:07:59 2026 Auto Mode Machine = Linux oleg416-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-oleg416-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 2659 12119 610350 488236 64 8 5450 28584 571375 592827 64 16 3044 26392 560635 801764 64 32 1932 10814 818885 811459 64 64 7474 62371 1460430 1526887 128 4 7210 12852 288981 288205 128 8 3641 5037 908709 752124 128 16 7560 39048 233543 962469 128 32 6062 43185 1306873 662962 128 64 5893 25078 670413 1306873 128 128 8920 75960 1663139 1663139 256 4 2752 6139 170089 516022 256 8 5871 14523 626159 495999 256 16 8067 26688 1128110 716876 256 32 21164 60998 606700 1112909 256 64 14488 85050 360097 1180188 256 128 15179 88645 1114064 1407621 256 256 16305 27138 1649865 2000242 512 4 6899 13648 114643 114821 512 8 5609 12143 718028 229485 512 16 10447 17282 857687 466661 512 32 14679 65073 1326585 340880 512 64 8608 17042 1111070 970041 512 128 25906 87162 146999 903136 512 256 33203 72070 1861217 336184 512 512 30228 132989 1734911 2105777 1024 4 7713 8998 331509 551995 1024 8 14202 15731 873705 236652 1024 16 23897 23344 458188 580102 1024 32 27853 54438 872995 447727 1024 64 37043 71965 1223356 411915 1024 128 49670 68789 781072 316066 1024 256 19707 82713 509921 1035479 1024 512 47108 113473 968904 1014925 2048 4 12383 6369 183609 241705 2048 8 8693 13834 353468 419926 2048 16 14427 16561 260428 461978 2048 32 17164 30332 735577 325650 2048 64 16825 24902 930068 1182403 2048 128 16470 35485 431529 620579 2048 256 26340 65303 1534244 685888 2048 512 46781 58274 1634370 592090 4096 4 7497 7492 220252 193801 4096 8 10279 12643 495099 338567 4096 16 18379 20714 840222 265856 4096 32 25270 25275 330326 469949 4096 64 25478 21454 867810 921478 4096 128 33468 41054 729450 604843 4096 256 32585 47024 543034 692686 4096 512 22034 62449 417698 311461 8192 4 5200 9301 252448 178214 8192 8 11300 12422 635928 319266 8192 16 17493 21408 798751 508379 8192 32 18308 26812 364641 369842 8192 64 28356 41258 925544 1011240 8192 128 36673 46112 801714 624145 8192 256 45868 44540 945174 744461 8192 512 29507 42722 365452 379121 16384 4 6614 6409 403964 357610 16384 8 10670 12119 292373 288720 16384 16 15589 19864 429868 577839 16384 32 22916 30296 468129 309143 16384 64 35566 40088 360063 667835 16384 128 27750 30530 435664 468797 16384 256 35948 68991 421908 442213 16384 512 34401 67299 291022 391577 32768 4 6135 7164 225774 149060 32768 8 10923 11712 609864 365758 32768 16 13238 19005 902702 619736 32768 32