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: Fri Sep 11 05:38:34 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 5256 10810 1083249 566551 64 8 2057 7026 842003 844652 64 16 6580 25590 760859 1049372 64 32 5177 50755 1421755 1066042 64 64 5638 41561 1421755 799377 128 4 3001 10199 518312 467329 128 8 4698 19802 1306873 618653 128 16 10565 28495 1291158 306992 128 32 10015 41292 1185654 921183 128 64 13424 80348 108200 542400 128 128 12417 89765 776042 2202044 256 4 6732 8148 323240 325691 256 8 8300 22959 780445 521283 256 16 17529 31445 750970 506050 256 32 9462 62869 1190657 457923 256 64 18123 51927 886067 980760 256 128 25919 95453 1362952 1339154 256 256 13089 93321 413485 1675612 512 4 9217 9890 563968 385558 512 8 12441 12481 599553 417245 512 16 14111 29906 955368 943200 512 32 26151 54917 1089647 954944 512 64 14882 63413 1267097 607353 512 128 22484 87628 396887 727268 512 256 18414 87699 1055894 1227971 512 512 38908 111495 1091308 942786 1024 4 9644 10821 708178 334425 1024 8 18143 18003 261142 655539 1024 16 32500 35074 479895 360050 1024 32 15734 26835 279696 738245 1024 64 20265 80554 930088 567906 1024 128 48764 75272 449132 501701 1024 256 42240 103916 1525848 419848 1024 512 39768 82394 746327 1729884 2048 4 8579 8928 396437 322060 2048 8 13094 15311 635218 345590 2048 16 22992 18852 673255 538796 2048 32 27960 38245 575470 479943 2048 64 23195 29350 432702 1072293 2048 128 35996 39178 606470 578026 2048 256 57774 66849 410749 708401 2048 512 25416 66426 653932 1669307 4096 4 6164 7128 224084 130803 4096 8 11503 17940 443147 469026 4096 16 21192 26684 455315 333577 4096 32 17154 17783 656200 345450 4096 64 32873 25478 624477 922715 4096 128 29540 35329 407726 337397 4096 256 23559 41673 1633718 1380485 4096 512 30697 52078 686102 760918 8192 4 2221 9171 206072 230715 8192 8 10327 11063 231405 580167 8192 16 17926 24714 493193 366962 8192 32 22662 28297 692823 727208 8192 64 23507 32317 733339 684650 8192 128 31023 39093 754051 749904 8192 256 33791 51383 876796 783989 8192 512 45554 65911 1080433 639253 16384 4 8134 7664 272694 221936 16384 8 10391 13628 582848 360539 16384 16 17350 23508 929008 674740 16384 32 24414 29454 855030 493182 16384 64 35850 47428 581733 366195 16384 128 31657 42817 390671 257133 16384 256 27867 39123 701370 622161 16384 512 34616 58530 1175660 1252706 32768 4 6619 7919 371557 374406 32768 8 18061 14028 263025 217035 32768 16 31767 22464 389798 430964 32768 32 17812 22678 503185 221481 32768 64 20919 33043 963572 676729 32768 128 30162 43883 684518 735534 32768 256