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: Mon Jun 30 17:38:45 2025 Auto Mode Machine = Linux oleg439-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-oleg439-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 17797 41394 1124074 1210227 64 8 18924 45429 1083249 1083249 64 16 23791 104579 1599680 1879725 64 32 26436 133363 2067979 2133730 64 64 18449 192868 2358717 2133730 128 4 11403 19429 545154 539674 128 8 13440 35585 761728 677178 128 16 19637 53426 667081 757430 128 32 17889 78826 1085013 692017 128 64 23147 100222 1175271 962469 128 128 41858 178019 1561553 1727352 256 4 17389 32136 913973 1272498 256 8 43046 72851 1696795 1391207 256 16 35854 56626 1076103 644578 256 32 31662 81972 917096 1138879 256 64 64629 125674 873809 965763 256 128 37981 123251 1208072 1197295 256 256 39556 135954 1195962 1044693 512 4 16130 22712 605128 598217 512 8 25302 36644 782951 807687 512 16 35414 58782 990625 898225 512 32 39810 80250 1026126 1008300 512 64 51733 97027 1062161 1086890 512 128 55754 123882 1113374 1120344 512 256 57528 103022 832420 1351633 512 512 66477 93838 1219602 1537424 1024 4 19735 34282 632188 701929 1024 8 27926 33590 880512 652650 1024 16 34885 57351 900637 871578 1024 32 54604 72696 1010864 989440 1024 64 57833 92103 1078919 1675884 1024 128 64381 108717 1147832 1114185 1024 256 72767 110967 1331853 1181297 1024 512 80813 145125 1851434 1058967 2048 4 24188 29996 544673 663222 2048 8 35508 38803 1249480 748525 2048 16 80996 91383 934724 1014902 2048 32 95490 138340 2109095 1871932 2048 64 79890 92015 929666 1010365 2048 128 80509 120640 1033337 1080793 2048 256 75826 119172 990330 914230 2048 512 105785 252929 1976603 2319844 4096 4 28352 34519 681313 762607 4096 8 47337 47174 911021 956573 4096 16 62276 105087 871154 864143 4096 32 128631 117195 972217 1029918 4096 64 80327 108965 968054 1034071 4096 128 86794 119159 1005152 1061415 4096 256 92550 136442 991062 1090521 4096 512 99174 192798 1286803 1120610 8192 4 32555 35207 730377 582607 8192 8 53757 44160 767973 657152 8192 16 66545 90199 1312602 1450401 8192 32 124619 96935 1730027 1846721 8192 64 107420 171215 953356 1434895 8192 128 125283 189248 1446311 1723518 8192 256 111875 204416 1795385 1882848 8192 512 160615 198353 2006899 2188545 16384 4 32495 36934 568118 584121 16384 8 55469 53671 979847 1199506 16384 16 84751 89576 1467963 1220772 16384 32 104243 93967 1734691 1434680 16384 64 152952 177799 1934353 1907771 16384 128 131481 166678 1391764 1292210 16384 256 168714 198406 1586036 1451958 16384 512 169291 236091 1988537 1964547 32768 4 33672 35148 944865 973765 32768 8 55858 69126 1128141 1416884 32768 16 75942 94218 1616590 1370828 32768 32 113719 133391 1852781 1916492 32768 64 137060 173030 1606518 1549973 32768 128 160979 158483 1938495 1950933 32768 256 140242 215805 1854981 1840573 32768 512 192449 261270 1829889 1851283 65536 4 35109 41248 1051774 982637 65536 8