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 7 09:52:55 2025 Auto Mode Machine = Linux oleg154-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-oleg154-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 14911 33971 423529 373966 64 8 17171 37851 640954 520419 64 16 16596 53829 1163036 1083249 64 32 17419 120331 799377 1690338 64 64 18322 107597 1734015 1933893 128 4 19922 26430 354649 505620 128 8 20585 47961 592699 695603 128 16 22543 54867 650117 627328 128 32 30565 82738 1254941 1663139 128 64 25718 125618 913347 1642783 128 128 45715 204849 1858934 2175277 256 4 17419 19854 400678 470773 256 8 27406 36420 587127 611189 256 16 36430 72379 886067 958864 256 32 43132 116993 910872 1561112 256 64 43844 118022 1790149 1142514 256 128 71531 161421 1312954 1361224 256 256 54331 157352 2187712 1552085 512 4 19375 27537 417326 359543 512 8 33100 39282 563229 671969 512 16 49421 66381 1010197 721163 512 32 71120 80900 1429934 854956 512 64 80277 96240 1024169 1224470 512 128 97119 178143 1410215 1679288 512 256 71279 122372 1992458 2116152 512 512 82314 138005 1736314 1679288 1024 4 25876 31257 549312 538972 1024 8 42340 46694 596042 658453 1024 16 59109 73923 1198772 1163693 1024 32 81315 111390 1158358 1254808 1024 64 90291 156546 1771262 1641301 1024 128 106104 146787 1374474 1744641 1024 256 128546 153705 1614767 1625769 1024 512 105295 170186 1957770 1841116 2048 4 25222 31179 351660 377367 2048 8 43408 44665 488541 474823 2048 16 61280 78924 577559 748786 2048 32 94395 102246 1393156 1375312 2048 64 117796 127593 1208351 1397008 2048 128 111839 157138 1409386 1373553 2048 256 114100 147222 1467911 1776319 2048 512 130828 216492 1744217 1514764 4096 4 21558 27433 287963 346530 4096 8 43843 42716 649748 598751 4096 16 60078 63951 910201 922963 4096 32 86855 93702 1276003 1162624 4096 64 105271 137412 1426211 1231107 4096 128 117823 190422 1646242 1283247 4096 256 132973 195401 1433590 1637143 4096 512 152386 199891 1645611 1719567 8192 4 26335 26551 400487 467207 8192 8 41010 42584 545957 778482 8192 16 65160 79779 943461 1001951 8192 32 91964 106859 1121591 961036 8192 64 117753 138033 1058531 1289450 8192 128 132734 168448 1298661 1265374 8192 256 123483 191182 1675937 1169939 8192 512 136235 209669 1308204 1750029 16384 4 25217 28412 448780 389705 16384 8 45186 47372 640246 694298 16384 16 60377 64420 882707 997382 16384 32 96667 119091 943562 1289591 16384 64 121161 149657 1379360 1159924 16384 128 136349 169916 1421856 1278911 16384 256 143195 182438 1784745 1787484 16384 512 148099 181066 1538422 1567978 32768 4