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 10 14:52:40 2026 Auto Mode Machine = Linux oleg246-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-oleg246-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 3170 11762 621657 488236 64 8 2756 13722 942521 165312 64 16 3588 25558 1066042 926260 64 32 3334 27350 955947 1013707 64 64 4325 53872 1279447 1679761 128 4 6489 3058 407707 481150 128 8 2448 14586 430942 637004 128 16 10654 26363 1038825 538051 128 32 13203 40442 631014 921183 128 64 8345 90142 1123617 1254941 128 128 3574 51039 747933 2004703 256 4 3891 13155 144304 156003 256 8 3285 12847 708831 219587 256 16 22537 31456 809878 625794 256 32 15184 35679 714967 662883 256 64 19187 53221 1011241 958864 256 128 10644 111063 1089202 1362952 256 256 22826 74638 1012194 2081678 512 4 9102 8184 358343 573303 512 8 8166 8976 581216 803757 512 16 16669 7770 519367 362885 512 32 7593 32360 737762 473555 512 64 12556 17987 444815 495176 512 128 16306 37258 823167 1091863 512 256 22196 75171 183847 198899 512 512 31644 104257 1585086 181623 1024 4 3447 8528 167511 188542 1024 8 11305 7536 84980 143919 1024 16 11457 25911 617642 857654 1024 32 11183 21200 1174192 286506 1024 64 18841 19020 378417 715016 1024 128 39483 69921 916004 458579 1024 256 32174 73179 277348 256067 1024 512 35821 96321 743227 634429 2048 4 8380 7023 231205 354080 2048 8 6717 16984 535138 297416 2048 16 18543 26662 870412 817559 2048 32 23710 23134 571754 265319 2048 64 17592 29756 1175768 228596 2048 128 27276 35837 1334088 421657 2048 256 13669 26491 173590 236814 2048 512 30235 53884 1511299 1512630 4096 4 6992 5167 235783 85056 4096 8 10180 8626 374682 343509 4096 16 12120 20227 454303 269666 4096 32 11407 31500 456634 342243 4096 64 18991 31887 247656 314881 4096 128 26628 41978 305921 736549 4096 256 30492 69456 1054574 626961 4096 512 33474 54098 439441 444926 8192 4 7361 6801 319739 229159 8192 8 13321 8328 366352 351906 8192 16 9859 14495 277684 276148 8192 32 16558 23604 888312 478056 8192 64 27716 26987 912977 608796 8192 128 31690 32344 475476 777813 8192 256 32952 51301 579521 288817 8192 512 30402 36969 918689 534267 16384 4 4786 7848 416876 257185 16384 8 12317 10677 339536 416777 16384 16 11383 22003 852040 652800 16384 32 19653 37332 977798 235924 16384 64 28150 33030 843227 974830 16384 128 39401 93523 850943 615987 16384 256 43513 55989 1230499 869274 16384 512 48427 96974 1353923 1053029 32768 4 7444 7159 371468 344450 32768 8 8730 9916 627825 476466 32768 16