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 9 10:17:54 2025 Auto Mode Machine = Linux oleg418-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-oleg418-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 22751 27875 524487 548044 64 8 29810 50909 474430 516414 64 16 31730 60720 1029254 725882 64 32 39923 95095 842003 969761 64 64 45653 116366 1279447 2067979 128 4 21974 32752 422464 406472 128 8 33855 63747 776042 490380 128 16 47549 90066 624409 715059 128 32 57273 133889 927549 1579934 128 64 62646 170445 1436229 1471662 128 128 87726 206424 1939522 2286447 256 4 28494 31087 367870 291951 256 8 43979 53735 739590 703260 256 16 49096 88063 1031644 1304976 256 32 53045 127434 1243036 1213534 256 64 112483 179531 1506359 1292410 256 128 114291 235945 2015259 2131261 256 256 108757 226537 2285501 2061693 512 4 27395 30407 419364 455960 512 8 42043 62799 601568 750919 512 16 69689 96569 1258188 1258188 512 32 107203 126205 1082507 971797 512 64 106312 184558 1672748 1807941 512 128 149496 241730 1565443 1551867 512 256 117164 212794 1599251 2225819 512 512 161418 243815 1655979 2381315 1024 4 32521 32683 469046 518227 1024 8 49370 48822 770424 699528 1024 16 75695 98470 698504 825034 1024 32 110473 129355 1387350 1236742 1024 64 133892 176916 1446211 1548960 1024 128 160225 280995 1539522 1854631 1024 256 192627 255366 1848247 2047361 1024 512 167898 226196 1957770 1612948 2048 4 24522 30808 438826 437329 2048 8 46457 53679 709395 512134 2048 16 92972 108348 860817 942105 2048 32 107903 147998 1291174 1182403 2048 64 137986 171305 1456462 1376414 2048 128 180154 239782 1678440 1617444 2048 256 204187 240514 1444461 1485169 2048 512 204859 251876 1906837 2011785 4096 4 29890 32744 386926 417576 4096 8 51707 60585 702428 709888 4096 16 81663 85260 888868 887353 4096 32 113926 131657 1243403 1355862 4096 64 136116 173441 1513670 1558009 4096 128 152544 207489 1327265 1653531 4096 256 192012 238236 1765513 1764063 4096 512 192552 254125 1898788 1911464 8192 4 27405 31349 418920 462484 8192 8 36047 56160 623104 583596 8192 16 83384 90078 1038033 939668 8192 32 123334 136608 1344287 1286457 8192 64 134546 164372 1247865 1239895 8192 128 158701 218232 1312602 1286650 8192 256 177029 229127 1654311 1776633 8192 512 190326 257116 1838814 1668774 16384 4 27977 31247 436140 429878 16384 8 48218 52629 737319 611983 16384 16 77874 91947 986982 1025927 16384 32 105745 135868 1448378 1406462 16384 64 152455 183715 1256141 1168702 16384 128 166717 172374 1508931 1298755 16384 256 161471 215567 1395551 1603130 16384 512 178331 233463 1610230 1704360 32768 4 29929 31985 418498 430026 32768 8 56375 58217 714581 707198 32768 16 82368 98460 1069906 1045999 32768 32 128691 136646 1336918 1175497 32768 64 145773 173010 1380521 1358484 32768 128 175608 212663 1569711 1715332 32768 256 193597 266421 1744574 1647123 32768 512 197779 299588 1749771 1728991 65536 4