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: Tue Jun 17 12:50:36 2025 Auto Mode Machine = Linux oleg112-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-oleg112-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 10398 9784 357529 302018 64 8 8187 13989 557144 608965 64 16 17448 69654 842003 874936 64 32 20125 97125 1188789 1183548 64 64 26207 74673 1452528 1392258 128 4 14494 13436 308403 71384 128 8 10833 14476 222971 513847 128 16 15924 41409 805138 990891 128 32 34706 110267 1663139 1377278 128 64 42118 141140 258632 1451764 128 128 19653 99387 1710838 1778862 256 4 17822 20251 233584 329894 256 8 31805 33702 643033 555248 256 16 37558 50966 750970 673696 256 32 61582 92049 507966 771473 256 64 67959 104706 231270 1361224 256 128 69489 183771 921029 1707589 256 256 68522 111931 1985448 2152625 512 4 23910 18870 328421 291389 512 8 31206 25214 804962 397549 512 16 26529 54982 828247 759416 512 32 39068 62954 1115688 973559 512 64 84209 118105 1358474 890404 512 128 84724 237479 1463057 1630828 512 256 67395 177100 2350044 1783912 512 512 116864 240619 1815584 1895721 1024 4 18099 25931 211139 340308 1024 8 33963 43548 570774 441197 1024 16 50139 60548 669226 662312 1024 32 67962 115484 1096548 1000969 1024 64 69484 123224 1354535 1210598 1024 128 123628 186011 1503415 1009913 1024 256 95336 217556 1679160 910953 1024 512 92828 148919 594722 662823 2048 4 17961 21685 190600 185773 2048 8 28902 35052 523910 427279 2048 16 39426 46835 413737 390313 2048 32 54042 74143 759109 1081337 2048 64 94048 113016 1225766 1527423 2048 128 125075 113374 1398828 1526066 2048 256 84711 113789 536944 540390 2048 512 79950 128128 1753475 1744572 4096 4 18225 20671 299850 262549 4096 8 29267 41378 577964 357416 4096 16 53037 47406 387616 810455 4096 32 60660 63470 942508 1183446 4096 64 89020 105990 738004 857287 4096 128 104255 123798 1560415 1539855 4096 256 100953 122177 1680050 1444802 4096 512 115892 168048 1708792 1662331 8192 4 21778 22606 252215 277376 8192 8 33578 36233 440476 495434 8192 16 53799 74467 595481 781759 8192 32 75010 85919 968895 814949 8192 64 85746 98226 1032388 863314 8192 128 119846 144816 1355156 1281037 8192 256 117678 150221 1018162 1356922 8192 512 139120 169997 1096500 1679705 16384 4 21001 22927 269491 283455 16384 8 34679 41263 603862 442786 16384 16 55145 67050 638029 770753 16384 32 78681 91127 990925 598237 16384 64 106462 123760 919683 1068751 16384 128 102069 155428 1171791 1375412 16384 256 107903 170216 1457254 1475623 16384 512 122008 170163