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 21 02:39:38 2025 Auto Mode Machine = Linux oleg130-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-oleg130-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 18491 33509 429630 454354 64 8 25355 40126 467815 566551 64 16 37824 58029 695778 1017549 64 32 41452 125978 811459 1002351 64 64 43621 113464 1279447 1933893 128 4 25873 23201 421139 266727 128 8 28700 43112 426492 474349 128 16 49784 72395 962469 1152564 128 32 56662 124888 1000121 1196221 128 64 66528 155713 1111981 1175271 128 128 75607 159412 1579934 1455701 256 4 22798 27104 497147 278257 256 8 38185 41632 785010 599585 256 16 43082 54563 944525 1117543 256 32 63584 139959 1447470 947860 256 64 103385 126414 1048775 1153561 256 128 98645 177161 1375171 1415041 256 256 111792 260945 2223962 1829808 512 4 25867 32671 298186 258055 512 8 43485 50044 557092 451075 512 16 54538 67332 811349 690996 512 32 89695 120187 960496 934580 512 64 135600 127237 1218910 1395552 512 128 103414 167160 1305615 1528669 512 256 134876 233579 1753325 1580419 512 512 142615 207871 2350044 2235086 1024 4 26798 29252 261763 352254 1024 8 49861 52750 576598 724179 1024 16 69077 87424 821719 1054547 1024 32 91887 105556 872286 1343938 1024 64 111436 157055 1410588 1506051 1024 128 119794 173297 1211622 1335165 1024 256 145766 183085 1590254 1796451 1024 512 151147 201303 1809317 1510288 2048 4 29579 30767 295696 383808 2048 8 52028 48140 606985 454306 2048 16 64465 78563 832212 935640 2048 32 81412 148566 969211 927958 2048 64 116421 136270 1145354 1243511 2048 128 118451 200963 1134013 1497076 2048 256 163043 155317 1572727 1379066 2048 512 151455 178474 1853353 1804302 4096 4 25641 26989 494686 496659 4096 8 44537 44690 652314 605184 4096 16 74013 80048 690958 790867 4096 32 87041 114534 1088518 1180681 4096 64 100623 153144 1443831 1011663 4096 128 130934 199668 1606976 1474438 4096 256 158550 226734 1754156 1753440 4096 512 159316 225662 1667818 1644194 8192 4 26991 25895 378904 348194 8192 8 47860 49451 565827 593536 8192 16 73344 87458 928596 941367 8192 32 92415 114201 978720 1188268 8192 64 131725 140886 1076776 1149431 8192 128 140204 157468 1164468 1193468 8192 256 150583 208639 1496516 1197128 8192 512 166257 242173 1528947 1395840 16384 4 27309 29107 457971 378995 16384 8 45407 52625