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 3 16:20:10 2025 Auto Mode Machine = Linux oleg315-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-oleg315-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 15177 28481 659861 733819 64 8 22277 53063 1279447 1033216 64 16 25255 84101 1336792 1933893 64 32 29344 113705 1518251 1492919 64 64 26567 135041 1518251 2662899 128 4 22122 31730 853794 948860 128 8 30738 52873 864797 1048974 128 16 36835 94257 1421023 1162547 128 32 46024 151324 1755594 2202044 128 64 45649 126477 1663139 1303699 128 128 54561 245729 1778862 2035099 256 4 23646 36765 947860 789628 256 8 42744 54772 1142514 882426 256 16 44437 86363 1163562 1415041 256 32 51779 138140 1591186 1652404 256 64 67796 154122 1662639 1763685 256 128 72253 196771 1694118 1829808 256 256 80328 220308 1967260 1696795 512 4 27845 34639 791318 920953 512 8 47680 58320 1354190 1138158 512 16 48314 88809 1406520 1224470 512 32 80642 127584 1252318 1418599 512 64 91903 173494 1689859 1322500 512 128 101994 183048 1834193 2047551 512 256 92736 209842 1938502 1861217 512 512 110343 252354 1889050 2216629 1024 4 30555 32685 881958 867178 1024 8 49725 55396 1141426 1020956 1024 16 72737 86493 1351126 1390944 1024 32 74782 125860 1609925 1657133 1024 64 118642 160452 1607514 1460969 1024 128 121300 212361 1654579 1741810 1024 256 121310 211098 1805514 1765437 1024 512 129734 189633 2019445 2008114 2048 4 30447 32083 855161 859010 2048 8 47372 54444 1008349 1184523 2048 16 75271 72082 1320349 1514764 2048 32 101300 127236 1615011 1439379 2048 64 116477 163406 1500214 1288076 2048 128 119022 203178 1626633 1729468 2048 256 121399 206162 1785550 1593737 2048 512 134489 228596 1894641 1923059 4096 4 28986 33802 1016872 841045 4096 8 49373 53326 1233671 1243493 4096 16 73813 84664 1383263 1360802 4096 32 106414 131156 1398920 1332515 4096 64 129800 153689 1513670 1548460 4096 128 141729 180854 1585179 1608179 4096 256 144265 207855 1757206 1781625 4096 512 150904 221704 1729086 1970212 8192 4 29213 30972 859685 827809 8192 8 50221 55141 1174820 1225610 8192 16 76517 82421 1334420 1297435 8192 32 101401 119530 1482953 1500372 8192 64 129556 163997 1605684 1690532 8192 128 132500 169357 1582974 1688040 8192 256 150682 194492 1653595 1652243 8192 512 155095 201060 1771229 1765858 16384 4 29399 32547 905194 877040 16384 8 47103 52120 1050727 1280817 16384 16 77006 82840 1459979 1377977 16384 32 104460 122264 1464834 1543917 16384 64 124352 156727 1606879 1579765 16384 128 142605 171790 1705417 1626196 16384 256 150412 191975 1754175 1686458 16384 512 139191 191547 1811562 1846910 32768 4 28261 31452 833939 654154 32768 8 49141 50908 1089291 1081270 32768 16 73008 81904 1312444 1314880 32768 32 99330 115704 1446332 1423709 32768 64 120207 145241 1521052 1481441 32768 128 138082 171684 1689854 1677316 32768 256 146516 183245 1762110 1740927 32768 512 149552 195181 1814691 1841412 65536 4 27780 30123 804419 818308 65536 8