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: Wed Sep 16 19:51:29 2026 Auto Mode Machine = Linux oleg123-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-oleg123-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 1379 4184 258906 174444 64 8 1325 18156 743988 519412 64 16 4276 18934 901377 727850 64 32 2779 33404 1183548 1143223 64 64 1622 43123 101610 1492919 128 4 5777 6396 579270 439767 128 8 6631 19441 786271 612303 128 16 4374 24710 757430 748976 128 32 6466 34925 1111981 969421 128 64 7185 24251 1196221 1152564 128 128 8102 56466 1336145 2027414 256 4 6777 10413 570288 150219 256 8 9828 17820 703260 466275 256 16 10313 36276 927393 375459 256 32 19580 39354 815414 790209 256 64 6977 26834 337251 542347 256 128 8028 51498 626159 1219045 256 256 13861 42078 1629830 1766587 512 4 8246 9058 424588 143215 512 8 10197 13857 357806 453552 512 16 6997 11769 698412 499553 512 32 14396 32003 1075459 704368 512 64 14927 41697 828566 186174 512 128 17670 39844 617482 815044 512 256 12083 31073 1329871 1565443 512 512 13064 60792 1015932 668413 1024 4 8773 6165 424747 147914 1024 8 4117 7436 497344 600207 1024 16 16395 27086 500240 1005892 1024 32 10177 27168 758050 519543 1024 64 24127 18125 858340 376032 1024 128 15608 40541 725770 861957 1024 256 13563 53442 453926 1014925 1024 512 31837 82222 955327 958739 2048 4 4907 6472 213803 316833 2048 8 3924 8552 459703 214765 2048 16 8196 12429 797150 525513 2048 32 32893 31509 928359 1094007 2048 64 10868 32020 672570 695383 2048 128 33385 40082 509340 1105268 2048 256 16889 40242 834557 424470 2048 512 21354 57424 908237 666671 4096 4 4221 4107 161012 289511 4096 8 5057 8535 441292 272632 4096 16 7854 12102 367878 398172 4096 32 24545 20045 427830 1068346 4096 64 32944 23830 471678 503929 4096 128 33401 30872 1309859 871110 4096 256 28452 41073 501399 571979 4096 512 39485 50582 330110 307437 8192 4 1867 4472 174758 182348 8192 8 8177 10653 230002 531261 8192 16 22946 20214 395558 582982 8192 32 23120 19948 376249 396746 8192 64 27046 26030 1375886 836617 8192 128 23915 40472 667869 783774 8192 256 66901 69077 880391 617472 8192 512 20806 32280 1036311 436420 16384 4 4209 4273 157440 144873 16384 8 7646 9044 617471 392497 16384 16 11000 18502 389242 411689 16384 32 20259 36526 912599 937934 16384 64 23339 49782 1089284 864093 16384 128 49643 36327 835233 537850 16384 256 26202 30727 742433 727299 16384 512 32485 58691 1212822 986628 32768 4 5406 8575 286894 362823 32768 8 14380 14405 611960 733344 32768 16 17517 19344 703960 1244796 32768 32 35741 28350 631163 349357 32768 64