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 Sep 14 12:38:28 2026 Auto Mode Machine = Linux oleg232-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 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-oleg232-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 2003 8545 185536 160758 64 8 5138 19571 710511 253048 64 16 3623 27680 969761 852702 64 32 4407 47723 1143223 1013707 64 64 3558 62444 1101022 13829 128 4 5048 9238 927549 501839 128 8 7609 11628 673778 256042 128 16 5483 24686 1093856 770474 128 32 6561 28069 1306873 1165070 128 64 10241 89765 1424795 1391557 128 128 5820 74900 1561553 1885042 256 4 2972 8390 680960 452329 256 8 12431 25682 868157 560172 256 16 8358 36239 406288 581719 256 32 20623 49002 1226004 844929 256 64 11967 46749 1076103 752549 256 128 5815 62409 1368162 1471270 256 256 20369 111063 1591186 1274008 512 4 5907 4135 619084 66735 512 8 17319 17053 225154 651383 512 16 18826 26884 258179 589837 512 32 18754 72811 978885 994294 512 64 33770 108932 358044 487531 512 128 23679 50996 1230786 749608 512 256 32996 80002 864942 677267 512 512 20220 61245 1562027 2016784 1024 4 7624 10437 339985 438897 1024 8 9742 11710 470588 200738 1024 16 18211 39289 632095 287004 1024 32 26514 37602 1253344 1130312 1024 64 10472 58278 1244266 292815 1024 128 32311 66818 308440 243564 1024 256 27087 54085 677674 226255 1024 512 25863 107870 1124099 1695065 2048 4 5401 4242 293153 336730 2048 8 12212 11666 394290 813686 2048 16 16113 18744 1128501 542951 2048 32 22356 20199 577559 670836 2048 64 46972 86901 1053487 1890887 2048 128 81012 93007 970196 718594 2048 256 22579 38567 814999 927558 2048 512 46108 122092 1391126 1557330 4096 4 10251 5684 354203 230411 4096 8 9607 13739 481083 311625 4096 16 9244 13311 657783 273905 4096 32 14488 16437 514771 802842 4096 64 17574 29055 1535314 492785 4096 128 33995 35537 1418791 436682 4096 256 22982 45306 927548 1625372 4096 512 21051 58903 1790351 1717333 8192 4 5286 5389 118723 186563 8192 8 6810 5016 225954 223257 8192 16 19885 12311 403867 299601 8192 32 22069 23106 1230437 418425 8192 64 30661 41989 738890 613634 8192 128 20838 15948 445438 356281 8192 256 41285 31263 264190 776564 8192 512 28922 42800 674516 361039 16384 4 4455 3624 540456 259306 16384 8 6511 20666 521384 359857 16384 16 15367 10822 235314 268110 16384 32 22595 21183 657465 421031 16384 64 15315 25776 216082 275328 16384 128 21863 20014 1369901 763144 16384 256 41068 92110 1246865 530125 16384 512 53461 36459 1447981 483974 32768 4 5572 6033 152266 154311 32768 8