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 Apr 17 05:52:56 2025 Auto Mode Machine = Linux oleg121-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-oleg121-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 16064 32772 474430 481234 64 8 20056 32990 489126 496362 64 16 39120 59377 752329 681644 64 32 35030 84312 1066042 1033216 64 64 31022 114921 1421755 1163036 128 4 14673 27917 504196 564055 128 8 26857 45926 843068 265015 128 16 41225 75820 688467 1254941 128 32 48446 115510 1421023 1618028 128 64 58287 130758 1291158 1319723 128 128 51219 155533 1755594 1911894 256 4 22849 26122 340891 282578 256 8 37520 33630 482189 392047 256 16 54735 81111 329894 494172 256 32 76326 98882 526652 561343 256 64 83011 138372 1752173 1190657 256 128 94637 128841 1254656 1662639 256 256 80630 170089 2533571 2392442 512 4 22290 25528 286644 293781 512 8 31593 38658 382399 650593 512 16 61436 54624 635951 477663 512 32 83427 81053 780390 939486 512 64 110083 127584 1143004 1286838 512 128 100845 143655 1373241 1484293 512 256 126079 203344 1904125 1875849 512 512 114210 231140 1216149 1066910 1024 4 20631 22354 300919 228166 1024 8 37369 41337 380260 647729 1024 16 47541 71669 755118 1015645 1024 32 85589 74892 973296 851195 1024 64 93877 113023 1062372 1597351 1024 128 78933 120496 1368780 1078919 1024 256 131873 125658 1670669 1368780 1024 512 98869 131910 1078919 1780809 2048 4 21369 21795 248387 260586 2048 8 38907 41067 423320 558484 2048 16 61072 68251 661079 671256 2048 32 73299 97347 868213 941692 2048 64 133621 93794 943761 1002933 2048 128 114688 139949 1360715 1596403 2048 256 131375 151894 1441311 1608961 2048 512 159501 213113 1512630 1908532 4096 4 20619 21573 372569 287097 4096 8 41491 39164 419156 409846 4096 16 71290 68536 748943 736960 4096 32 95864 82540 1088794 929404 4096 64 125559 104104 756695 720124 4096 128 129431 155168 1159955 1194888 4096 256 160350 176157 1641053 1669763 4096 512 168179 217676 1461767 1426211 8192 4 23890 24138 328641 310821 8192 8 36719 37759 470721 494272 8192 16 65839 75688 610711 756842 8192 32 85085 71819 463082 785422 8192 64 111358 103049 900299 1079008 8192 128 123793 116966 881724 998893 8192 256 134747 156163 1379587 1232644 8192 512 123759 152585 793952 1134179 16384 4 21351 21788 292910 342810 16384 8 38054 38306 458729 563335 16384 16 61190 63349 675655 870375 16384 32 84207 82214 792111 877331 16384 64 116959 106943 1071200 1162966 16384 128 128536 130480 1198878 1058659 16384 256 126913 170028 1350119 1413986 16384 512 132675 149685 1196873 1517327 32768 4 21835 22628 309348 303924 32768 8 36105 40440 540031 501682 32768 16 62520 70068 711047 662232 32768 32 88431 95329 928799 887127 32768 64 107309 132528 1003645 926120 32768 128 118531 134854 1045299 1001830 32768 256 132435 160857 1315623 1292219 32768 512 153635 194117 1347364 1386650 65536 4 21394 23355 319946 319956 65536 8