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: Sat Aug 8 01:22:03 2026 Auto Mode Machine = Linux oleg250-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-oleg250-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 1073 8284 621657 489126 64 8 3250 9644 658243 142269 64 16 1602 17297 720041 420873 64 32 6013 12665 1163036 889431 64 64 4722 11617 1421755 1452528 128 4 2994 10086 649331 185780 128 8 3845 7160 162010 706589 128 16 6814 43272 990891 659704 128 32 4049 60033 1048974 385460 128 64 3681 22057 1231904 799146 128 128 5161 34828 1579934 895074 256 4 6310 7156 589706 143590 256 8 10031 8006 1327564 626159 256 16 7009 10091 792543 781013 256 32 8917 50591 434044 443730 256 64 14718 99764 1224606 403691 256 128 14328 71832 437760 1084800 256 256 8424 37960 1600674 917880 512 4 3286 10382 585814 243926 512 8 16834 9295 202138 78599 512 16 10473 7643 541227 724081 512 32 13684 16633 730236 62127 512 64 10662 15326 1237168 1147892 512 128 16974 119765 267505 1044594 512 256 40596 130049 1882427 1147892 512 512 57367 208821 1766304 2597325 1024 4 13814 12406 432402 785213 1024 8 6238 6589 819211 366220 1024 16 8421 9868 166750 948157 1024 32 11935 51176 1672621 788964 1024 64 28387 59441 322328 528949 1024 128 32408 37057 259705 416792 1024 256 16960 77056 1412443 578150 1024 512 20491 91266 1210257 671004 2048 4 4678 3293 134073 167484 2048 8 6697 8507 441283 275117 2048 16 10309 8625 624368 358409 2048 32 21875 14414 1080657 1125249 2048 64 8984 21903 240885 1067761 2048 128 27986 49976 1051424 293414 2048 256 13830 53433 1490582 1825390 2048 512 48693 90451 1588726 788877 4096 4 4604 3889 128736 104369 4096 8 4263 6252 451047 259073 4096 16 13539 17488 442007 390249 4096 32 17336 25389 512391 238609 4096 64 23610 25204 446336 616875 4096 128 25976 29480 912424 417749 4096 256 38369 42185 614646 1376392 4096 512 14009 41936 917149 397013 8192 4 4688 4650 128053 214979 8192 8 5899 8469 212392 216221 8192 16 9780 12226 289899 283078 8192 32 15827 17832 254964 282540 8192 64 26297 39894 759284 478309 8192 128 27947 28669 731559 576053 8192 256 26373 41674 703663 770781 8192 512 30467 51903 766243 766824 16384 4 4667 4712 396448 186126 16384 8 9079 10341 517190 436140 16384 16 17594 16414 556898 594290 16384 32 18193 29462 870012 701098 16384 64 23596 25541 951677 754878 16384 128 28039 44231 909266 819769 16384 256 30694 39540 896971 838320 16384 512 23937 41122 663451 1000359 32768 4