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: Sun Jul 26 11:12:26 2026 Auto Mode Machine = Linux oleg247-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-oleg247-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 1509 8620 361867 387461 64 8 3134 12864 743988 541412 64 16 1255 45483 789967 727850 64 32 2557 14266 1143223 1143223 64 64 4478 45840 1119387 1780008 128 4 5369 8941 587511 225689 128 8 6531 9179 719853 323259 128 16 2570 14050 761728 814915 128 32 2069 20722 74196 983630 128 64 6110 50649 422464 1165070 128 128 3766 17050 1451764 1162547 256 4 3583 8314 239471 240382 256 8 7106 8862 405062 593947 256 16 3567 15413 279416 498995 256 32 5347 38664 886067 828628 256 64 4878 51834 1415041 1008392 256 128 4574 58460 1540948 1514860 256 256 14907 85674 977189 1924938 512 4 6679 5872 581689 135523 512 8 9171 10755 876593 430633 512 16 3788 21520 1191189 585814 512 32 15981 34131 1273861 1007827 512 64 22963 37039 635951 1267097 512 128 12071 34775 1776533 1316823 512 256 11740 49325 1433753 1610042 512 512 27079 72634 1555239 116813 1024 4 2722 4471 568282 265010 1024 8 10238 10811 355814 710052 1024 16 8391 6177 316625 356552 1024 32 20912 35805 308262 569865 1024 64 12753 34036 1171629 368356 1024 128 24781 20817 485756 628580 1024 256 14849 44857 969780 117971 1024 512 14711 34122 1488307 431533 2048 4 5009 5871 327574 286075 2048 8 12059 7080 294258 302475 2048 16 13294 6840 331980 251750 2048 32 19990 17844 1106978 724167 2048 64 11432 21499 386119 218735 2048 128 30171 49741 740971 425775 2048 256 37491 31388 1432179 487626 2048 512 28768 51692 283657 1077404 4096 4 4076 4804 360090 268641 4096 8 9194 6001 433257 498910 4096 16 10192 12762 569684 360726 4096 32 17442 20635 425773 561253 4096 64 23941 29173 547743 562632 4096 128 30745 62931 565502 532844 4096 256 48006 31716 1518218 1274394 4096 512 23787 46925 449172 616964 8192 4 3782 5209 186873 173430 8192 8 6061 6797 409435 370675 8192 16 10651 9675 566209 371754 8192 32 13015 14839 259495 273641 8192 64 18970 22709 472352 516161 8192 128 21191 24676 509547 427802 8192 256 24631 56585 638754 537737 8192 512 25239 54404 582064 388593 16384 4 4551 6244 207049 187648 16384 8 8283 6949 555143 484315 16384 16 11100 8677 177708 364972 16384 32 12888 19288 796924 522415 16384 64 16882 25305 408488 282180 16384 128 29914 33468 902353 776852 16384 256 19483 23105 912660 839385 16384 512 30173 39381 1078040 711854 32768 4 4387 5789 291380 159372 32768 8