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: Thu May 1 15:56:01 2025 Auto Mode Machine = Linux oleg442-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-oleg442-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 1418 23063 289635 367817 64 8 11615 35072 576282 576282 64 16 12751 59588 771797 799377 64 32 10975 86125 1124074 1066042 64 64 4399 102074 1460430 1526887 128 4 6050 13278 407707 422464 128 8 7022 41790 554157 524900 128 16 5455 29493 1017175 735635 128 32 5965 93697 1102844 1152564 128 64 6286 98984 990891 1278855 128 128 23138 126745 1732927 1487977 256 4 5926 16420 137486 323240 256 8 14332 31762 70623 524593 256 16 16224 38072 755195 810490 256 32 25679 73499 1312954 1122215 256 64 25364 34722 775933 1254656 256 128 22264 144537 1588832 1463250 256 256 36305 125557 2081678 2000242 512 4 11458 9656 121906 325731 512 8 27549 45265 565156 554074 512 16 26275 69318 837942 1024169 512 32 26143 29416 1248678 349025 512 64 29401 127237 1147892 864942 512 128 27848 150808 1514652 1770674 512 256 45952 143176 1677976 1917728 512 512 52340 77259 1968713 2150051 1024 4 13060 17138 220641 365069 1024 8 19270 28971 256265 312002 1024 16 38705 44354 631352 582541 1024 32 38163 60520 314977 598451 1024 64 17628 94709 1296083 730958 1024 128 55113 102461 700440 1490373 1024 256 40185 72804 1865101 1774922 1024 512 36935 144753 2060128 2052253 2048 4 18273 19435 134719 370274 2048 8 26998 39567 398904 477701 2048 16 26395 40193 1045919 740141 2048 32 26577 96859 674577 955306 2048 64 66901 99162 1343897 1267175 2048 128 73035 134729 1152422 1324829 2048 256 55331 143287 1431225 887407 2048 512