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 15:13:27 2025 Auto Mode Machine = Linux oleg325-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-oleg325-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 7536 27754 76264 71358 64 8 8673 39407 528618 373966 64 16 10691 57917 889431 939223 64 32 14672 78242 1124074 1330167 64 64 4411 71339 1421755 1460430 128 4 10831 8697 175115 268864 128 8 8588 42300 531131 579270 128 16 15548 61365 92153 992724 128 32 22643 90203 1111981 971174 128 64 11007 112887 940549 1451764 128 128 21132 133622 1642783 1827299 256 4 11538 18476 393917 246395 256 8 21959 29979 292907 362651 256 16 25834 66183 532133 907792 256 32 26308 48256 1137672 419626 256 64 17304 97747 1453348 476835 256 128 22511 140508 1384034 1610276 256 256 37635 131831 1829808 1985448 512 4 14847 23935 352173 178025 512 8 18173 34251 567545 607353 512 16 29581 70310 862164 808904 512 32 34124 84487 903136 1115688 512 64 45853 98995 1580419 1261144 512 128 66885 124305 1707325 824431 512 256 39490 158021 1954379 1795846 512 512 65767 166177 2030130 2032051 1024 4 17936 23216 319880 146872 1024 8 22210 28236 534146 636498 1024 16 34914 51100 407151 786507 1024 32 28653 54806 1084914 1066859 1024 64 62071 103738 755782 1357961 1024 128 51217 75343 1495042 808874 1024 256 59524 104511 1385560 1571057 1024 512 54485 158686 1517224 1395010 2048 4 13386 19628 343792 238279 2048 8 29786 19371 616083 624368 2048 16 41106 56787 850841 765604 2048 32 30922 78407 1157703 579195 2048 64 52230 99994 1431225 1020448 2048 128 71456 104612 1550304 1024097 2048 256 71431 113544 1682715 1693997 2048 512 108861 158463 1606254 1750259 4096 4 11084 18801 248498 362537 4096 8 28791 22861 616410 451699 4096 16 37213 35829 720607 283282 4096 32 68738 56145 653679 1182062 4096 64 52830 99166 1106393 522648 4096 128 43381 100934 1776834 1248010 4096 256 60654 132970 989122 1663135 4096 512 97691 126360 558880 1044889 8192 4 16549 14299 381559 314895 8192 8 32935 37106 407967 493193 8192 16 38907 43716 409870 482819 8192 32 61794 51687 1078060 643973 8192 64 72804 74014 928897 458186 8192 128 71872 120034 1308005 672852 8192 256 68925 136167 1138727 1575426 8192 512 71802 84884 1499783 1500634 16384 4 13887 18698 288054 297895 16384 8 24360 29784 531757 504760 16384 16 41975 50051 517564 578978 16384 32 42922 69340 1084385 1102407 16384 64