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 Mar 10 13:16:14 2025 Auto Mode Machine = Linux oleg341-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-oleg341-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 21725 27694 351444 627470 64 8 29331 47095 581273 735831 64 16 36889 93570 942521 1429325 64 32 52034 152797 1188789 1163036 64 64 54013 192178 2203800 1690338 128 4 27934 33906 595328 479432 128 8 37715 61661 584313 576780 128 16 57810 80360 864797 767171 128 32 47268 152010 1162547 1319723 128 64 75384 162648 1303699 1637771 128 128 94472 177313 1504659 1967960 256 4 23213 28024 390905 358056 256 8 38929 61081 693718 588414 256 16 68010 98266 891956 1058076 256 32 74139 121096 1163562 1842366 256 64 104066 246848 833776 1683493 256 128 110344 265856 1817419 1561112 256 256 123919 226155 2305128 2699161 512 4 28468 32757 495176 465447 512 8 48048 56461 898601 718268 512 16 77906 77120 1240025 1022219 512 32 86255 114204 1399189 1057974 512 64 131354 196623 1380303 1240025 512 128 137405 263760 1718254 1931527 512 256 153109 262150 1842059 1869318 512 512 146198 275537 2463259 2055390 1024 4 28854 29482 373319 291484 1024 8 43903 48913 607336 636404 1024 16 68762 77680 1096548 954266 1024 32 98310 126200 1204487 1132697 1024 64 124258 155340 1424152 1597351 1024 128 134808 194159 1558516 1414304 1024 256 183877 182269 1762539 1865101 1024 512 154102 241170 1906496 1858644 2048 4 28870 30014 438646 344316 2048 8 47379 52065 502576 523782 2048 16 68736 68965 766219 828120 2048 32 125221 114522 1120259 1268110 2048 64 135092 157976 1456462 1498120 2048 128 149064 202107 1146118 1463909 2048 256 161298 221882 1817281 1774851 2048 512 187251 257385 1665101 1928240 4096 4 26741 28037 411860 440568 4096 8 50012 50904 663961 549565 4096 16 80824 84222 939879 736549 4096 32 114515 125833 1472290 952542 4096 64 148427 175998 1451884 1696809 4096 128 186776 249530 1802751 1988225 4096 256 204085 236351 1731875 1816283 4096 512 211635 250257 1929280 2000961 8192 4 31046 32333 530228 560940 8192 8 52668 52685 749839 791866 8192 16 90219 98177 1024019 1117287 8192 32 138128 121645 1112152 1248409 8192 64 180915 147736 1241014 1236148 8192 128 156712 192020 1668450 1305718 8192 256 205912 230669 1453777 1940810 8192 512 203714 290856 1612920 1854696 16384 4 30050 30713 423820 472338 16384 8 54574 52949 753835 714059 16384 16 89797 85200 1129459 1261467 16384 32 125109 128488 1435939 1318515 16384 64 161479 172406 1506847 1505197 16384 128 196293 190871 1430677 1584500 16384 256 208601 264079 1873956 1656257 16384 512 225392 238885 1979429 1712557 32768 4 29345 30544 450579 445501 32768 8 54890 57631 725195 697352 32768 16 80900 91064 1046398 1062619 32768 32