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 Sep 3 15:32:54 2026 Auto Mode Machine = Linux oleg225-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-oleg225-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 1549 3455 70793 441646 64 8 2839 9585 695778 889431 64 16 3035 14935 901377 955947 64 32 2241 56682 1105556 1336792 64 64 3231 61485 1163036 1526887 128 4 4898 8159 551878 317711 128 8 4465 16575 913347 718889 128 16 3467 11573 1007629 439767 128 32 4595 27327 1102844 883293 128 64 5616 21809 934004 985435 128 128 4347 22152 1065630 1939522 256 4 3773 3652 428843 38248 256 8 2590 5290 746272 831194 256 16 3756 9565 1262029 567575 256 32 3886 30772 103147 75830 256 64 13646 85852 988889 1201314 256 128 15092 39216 1117543 861885 256 256 5730 37520 376909 1673001 512 4 2086 3194 322260 549396 512 8 8795 22927 514514 486648 512 16 13305 18861 1012101 709019 512 32 12085 34258 904277 1418599 512 64 8106 22427 1245780 1094088 512 128 21613 51701 1267097 407275 512 256 28560 28334 1518938 1094088 512 512 17980 57813 342239 896725 1024 4 7596 5796 182533 379554 1024 8 7669 7164 837257 497574 1024 16 8108 10816 778101 555062 1024 32 12023 35110 996094 527002 1024 64 23955 28785 1440391 740408 1024 128 26714 37381 362328 130511 1024 256 19415 44151 644811 561374 1024 512 28687 28755 289832 263708 2048 4 4361 6502 288051 158037 2048 8 6251 13477 270474 180712 2048 16 19097 12832 774300 600408 2048 32 23565 25241 776048 438087 2048 64 24658 29835 320199 684031 2048 128 18878 34222 675904 567936 2048 256 16926 33495 1004928 830763 2048 512 38813 52878 704508 526189 4096 4 2771 4135 397509 189131 4096 8 5272 7127 482163 256095 4096 16 16945 13210 301688 384098 4096 32 13733 13171 298019 246685 4096 64 20635 25839 524659 349008 4096 128 35476 46115 609716 416554 4096 256 1577 57703 534169 210473 4096 512 34943 33789 415959 997564 8192 4 3596 3490 183925 225843 8192 8 8630 7292 221039 336372 8192 16 8590 12016 233037 276215 8192 32 11908 21420 548038 557617 8192 64 19495 17282 538876 638457 8192 128 20527 21904 512290 358841 8192 256 30230 51924 991399 448356 8192 512 28665 46024 806305 447650 16384 4 4413 4405 406057 182991 16384 8 5947 6998 191816 151003 16384 16 7489 10404 214827 244624 16384 32 10467 14269 438391 350955 16384 64 15816 20982 453849 508694 16384 128 22501 26734 347885 365013 16384 256 23164 29178 771013 566432 16384 512 18473 48844 943990 572505 32768 4