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: Wed May 21 02:40:19 2025 Auto Mode Machine = Linux oleg217-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-oleg217-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 8615 29424 400168 318124 64 8 14988 43479 587635 572594 64 16 18348 78540 681644 1232453 64 32 29369 89783 1452528 1049372 64 64 24855 114091 1638743 1599680 128 4 16385 22264 460514 400110 128 8 20249 61988 571257 907174 128 16 26134 66118 711270 962469 128 32 44154 119735 744820 715059 128 64 26600 156121 2132084 1727352 128 128 50021 158799 1521718 2464907 256 4 17674 26326 413644 402632 256 8 32825 45092 1040643 794889 256 16 37525 92318 1058076 1230218 256 32 62423 107613 1430119 1208072 256 64 72336 142769 2030503 2000242 256 128 69507 162324 1921494 1775350 256 256 76347 143821 1956506 1881098 512 4 23371 29185 422084 342021 512 8 38743 47363 665720 730484 512 16 53951 80657 1227971 1026126 512 32 57029 99435 929322 1168504 512 64 74568 128739 1312798 1279935 512 128 86837 137414 1422357 1940253 512 256 80681 172574 1999881 949875 512 512 80175 187066 2047551 2360376 1024 4 23439 30308 411876 260825 1024 8 43119 49353 689090 680789 1024 16 67972 78079 1060013 995171 1024 32 82982 97962 1092921 1063425 1024 64 119918 138396 1441842 1448650 1024 128 107743 143233 1636299 1495042 1024 256 88543 153524 1841906 1668074 1024 512 114055 203902 1903117 2020395 2048 4 24888 29149 326008 471668 2048 8 45485 46720 654730 514959 2048 16 65601 76960 885851 880855 2048 32 89884 108056 1440344 1100454 2048 64 116396 134657 1439379 1347270 2048 128 125768 158427 1495773 1534244 2048 256 129513 183577 1591375 1914061 2048 512 146957 232017 2070459 1917479 4096 4 27523 29842 441814 438208 4096 8 43181 53729 740805 773561 4096 16 71161 85898 1010354 1091422 4096 32 95176 127098 1355862 1463386 4096 64 126454 171466 1490556 1430129 4096 128 151423 176809 1856719 1908703 4096 256 155156 215624 1835886 1960768 4096 512 149097 196987 1860137 1961663 8192 4 26991 28923 406187 389686 8192 8 47107 52847 663599 598176 8192 16 75643 82781 865597 866514 8192 32 86740 113534 1415331 1082578 8192 64 121725 141879 1149893 1269488 8192 128 138708 171571 1287035 1404628 8192 256 134281 180886 1278225 1376823 8192 512 154199 208985 1505038 1865166 16384 4 26927 29354 431804 430851 16384 8 43065 48452 677107 655940 16384 16 66282 78487 1033565 890139 16384 32 98371 109526 1428417 1362486 16384 64 122876 142047 1231227 1305094 16384 128 140722 168504 1743140 1698169 16384 256 145443 182633 1567263 1553551 16384 512 145529 193421 1591620 1618002 32768 4 26901 27903 428962 386346 32768 8