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 Oct 7 09:19:33 2025 Auto Mode Machine = Linux oleg327-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 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-oleg327-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 12869 26844 1087638 1033216 64 8 17881 30206 720041 679917 64 16 18412 67738 1083249 1526887 64 32 23555 91559 2067979 1734015 64 64 23393 107382 1780008 1679761 128 4 16431 22496 795593 627328 128 8 22083 32136 680612 969421 128 16 29037 44912 1755594 1319723 128 32 34353 80613 1363288 1254941 128 64 40224 127893 1521718 2058509 128 128 38777 111782 2132084 1618028 256 4 19461 23862 834424 654798 256 8 27432 40803 808050 1004618 256 16 24082 53757 965763 1325925 256 32 39185 119174 1855098 1572543 256 64 44428 121562 1354356 1347557 256 128 62697 139959 2413957 2441400 256 256 26200 131815 1694118 2812272 512 4 19131 20347 502946 473555 512 8 34609 35719 1391032 705294 512 16 42084 75616 1207940 1344020 512 32 57541 94221 1442420 1036027 512 64 66553 112824 1057974 1004057 512 128 65944 139811 1977778 1414860 512 256 67467 154308 1340664 1380303 512 512 81893 177848 1999881 3104171 1024 4 20107 19999 684042 746327 1024 8 30231 39469 739389 674163 1024 16 45388 57762 1607514 784067 1024 32 58772 94058 1976691 1561348 1024 64 80352 124514 1771993 1635675 1024 128 89665 148559 1662264 1299612 1024 256 83454 144778 1481633 1799462 1024 512 102635 138525 2275110 2146618 2048 4 20991 24325 827482 810386 2048 8 38619 41236 860472 902606 2048 16 53590 70160 1708146 1470172 2048 32 71022 100161 1502575 1504681 2048 64 73339 99114 1470172 1250389 2048 128 80480 115988 1590196 1569566 2048 256 103018 152504 1671907 1682715 2048 512 112967 154030 1978880 1739978 4096 4 22514 25278 1054833 762471 4096 8 34523 41873 1107320 914513 4096 16 57610 71155 1469771 925848 4096 32 68575 96535 1183854 1374520 4096 64 97317 128180 1282002 1498749 4096 128 99076 157043 1713052 1566819 4096 256 108136 140809 1914873 1351382 4096 512 108159 135498 1677262 1877210 8192 4 21381 23583 775548 694419 8192 8 33960 35014 1039729 1029943 8192 16 57233 60259 1229865 885907 8192 32 72040 88380 1484619 1108814 8192 64 88632 110629 1808425 1235037 8192 128 101188 125080 1601269 1331576 8192 256 107884 127132 1904767 1913999 8192 512 118342 144205 1877601 1660628 16384 4 22173 24840 839477 718245 16384 8