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 Apr 23 21:09:50 2025 Auto Mode Machine = Linux oleg429-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-oleg429-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 13442 30047 432398 511494 64 8 21073 39194 532815 520419 64 16 24205 71037 877797 771797 64 32 28765 117026 1599680 1119387 64 64 19359 108292 2067979 2278628 128 4 13260 19236 526444 390222 128 8 20308 44613 809997 554157 128 16 33763 76555 1306873 877518 128 32 45859 111969 1827299 1165070 128 64 39987 115411 1727352 1269781 128 128 55531 181878 1939522 2420455 256 4 19965 29526 520272 522551 256 8 29815 41124 654798 675391 256 16 39337 59629 970126 937924 256 32 58394 125118 1153561 1817419 256 64 67265 160913 1855098 1534342 256 128 87546 166890 1766587 1855098 256 256 51531 153835 1839210 2419396 512 4 21751 29808 493809 423499 512 8 41963 43585 819085 739795 512 16 46093 62845 957072 853257 512 32 70785 112599 1201856 1021732 512 64 72831 126763 1368865 1484293 512 128 103374 123405 1924603 1347393 512 256 81685 121554 2244430 1869318 512 512 66123 213323 2216629 1947291 1024 4 24344 28767 351274 422616 1024 8 40455 50630 645296 558600 1024 16 60462 71057 827737 796868 1024 32 91386 115537 1216082 1147832 1024 64 94665 163550 1235319 1444266 1024 128 131285 183343 1510288 1714690 1024 256 142501 188758 1709231 1614767 1024 512 120062 177376 2353657 1903117 2048 4 25952 32740 513297 445910 2048 8 47142 57936 747678 646063 2048 16 79629 82700 954776 917551 2048 32 90922 119562 1368084 1574169 2048 64 121053 167211 1439379 1242791 2048 128 151154 198085 1587551 1607456 2048 256 161120 203780 1732608 1673209 2048 512 172666 223214 2023634 2037554 4096 4 28738 30964 409885 447942 4096 8 51074 50598 580993 668300 4096 16 68024 73781 1043810 758399 4096 32 105550 99145 1040396 846432 4096 64 106847 162184 1073956 984361 4096 128 141368 184395 1666362 1666362 4096 256 162436 227811 1851716 1589432 4096 512 173184 248605 1791845 1264638 8192 4 27262 29899 490063 454224 8192 8 49112 49420 613492 592676 8192 16 66035 77810 856983 828728 8192 32 99602 114375 1117433 959694 8192 64 113297 136496 1118670 1144607 8192 128 132488 171012 1288821 1074218 8192 256 130931 169965 1421480 1660628 8192 512 147710 200537 1597547 1760971 16384 4 26220 26920 377893 428047 16384 8 39615 45116 634032 537182 16384 16 65768 75274 980253 1020821 16384 32 93666 108815 1116612 1116213 16384 64 115650 139866 1364786 1319807 16384 128 135171 162866 1567549 1395438 16384 256 135219 164616 1591435 1579474 16384 512 146126 188101 1714908 1504768 32768 4 26705 30238 414438 411927 32768 8 45034 51089 745222 767366 32768 16