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: Fri Apr 25 18:30:20 2025 Auto Mode Machine = Linux oleg247-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-oleg247-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 5239 22947 215471 313664 64 8 7714 37915 592827 463774 64 16 9513 60433 821391 720041 64 32 11621 42075 1049372 1066042 64 64 11267 98624 1460430 1492919 128 4 12389 12883 378663 170013 128 8 7656 29257 533241 699227 128 16 15588 55104 246180 396271 128 32 11888 80252 1000121 1000121 128 64 17139 81630 1123617 826202 128 128 21087 130472 1772988 1939522 256 4 17380 23419 362040 193788 256 8 20654 39366 356985 635047 256 16 17203 53838 764334 977189 256 32 22523 111351 870974 1036624 256 64 33048 87582 1376935 1202660 256 128 35049 146870 1099237 1405778 256 256 33255 105178 1855098 1842366 512 4 18116 18469 291547 427716 512 8 24720 34231 470546 377559 512 16 35866 48911 606667 823167 512 32 54133 97987 702295 661414 512 64 59967 118359 1176828 1422357 512 128 52942 139512 1316016 1429934 512 256 35104 101932 2150051 1528669 512 512 64392 203248 1138158 1293037 1024 4 18630 18913 374132 374981 1024 8 28550 38942 548750 576907 1024 16 48280 67649 846998 835303 1024 32 60527 88024 1102459 341227 1024 64 59331 126591 626745 1617199 1024 128 53795 116165 1139005 1454537 1024 256 51420 129343 1247157 1582636 1024 512 71628 143080 1777861 1809317 2048 4 19236 20992 321145 322217 2048 8 37155 42441 555163 613531 2048 16 48221 66400 341958 694708 2048 32 59764 66963 831487 738804 2048 64 85297 109413 1385740 882756 2048 128 71044 103466 1099187 1301149 2048 256 91637 153625 1627866 1336787 2048 512 82305 207959 1393156 1345582 4096 4 22166 24578 186064 342277 4096 8 29543 41408 591230 224239 4096 16 45494 64035 657355 488497 4096 32 50861 81358 897083 1068346 4096 64 69941 107719 717717 1207146 4096 128 75558 105227 1684167 764031 4096 256 106853 108147 1693297 1472290 4096 512 93067 108299 1137151 956786 8192 4 18146 21787 384673 282171 8192 8 24886 32381 521251 551796 8192 16 39801 48151 317643 718224 8192 32 48710 61007 877827 664176 8192 64 52897 78351 1149931 888403 8192 128 53213 80088 1431965 1455316 8192 256 50715 74862 1446311 1328795 8192 512 73674 135678 1686300 518975 16384 4 18844 20776 317223 247011 16384 8 28730 32003 470872 281658 16384 16 40897 40688 514025 735700 16384 32 57464 63813 580436 479373 16384 64 47141 81541 563566 600764 16384 128 48519 60196 978968 474612 16384 256 67814 104537 1039144 768400 16384 512 98060 118817 1745575 770399 32768 4