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 Sep 5 00:20:35 2026 Auto Mode Machine = Linux oleg203-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-oleg203-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 2889 5399 592827 598110 64 8 2769 27837 866463 703068 64 16 3768 50083 633392 799377 64 32 6393 31235 1232453 267951 64 64 3649 62750 1285575 1609270 128 4 2744 4087 397444 535368 128 8 8449 22288 848397 587511 128 16 5903 20980 819893 249497 128 32 8086 37789 430942 650117 128 64 9269 81531 476031 1114289 128 128 9809 99998 410199 1732927 256 4 10837 11195 654798 327779 256 8 11363 13644 737558 143245 256 16 8874 39126 1180188 457923 256 32 4057 7454 1103757 859127 256 64 12896 56311 349206 1375171 256 128 14203 57426 787890 1718521 256 256 16001 39348 1495866 1588832 512 4 2761 3558 527273 478089 512 8 6074 18032 585176 697505 512 16 15681 36055 903136 671129 512 32 10117 15849 1193175 115030 512 64 9079 22121 1094088 297484 512 128 22407 72850 115656 1239310 512 256 19292 41771 927315 1395552 512 512 19622 40220 1505098 2438090 1024 4 8761 8320 567306 498267 1024 8 15223 8307 503170 796277 1024 16 30246 38827 1135091 634523 1024 32 21951 51413 1047091 576907 1024 64 36742 56106 655139 191792 1024 128 45720 64613 1124099 1376236 1024 256 28468 61505 1458984 748538 1024 512 53888 119278 1554004 470588 2048 4 9948 4631 124975 137531 2048 8 12321 14711 622828 808555 2048 16 17121 26270 1139731 584317 2048 32 26938 35454 1315294 662609 2048 64 34292 35527 1520663 529203 2048 128 18744 34159 1613798 1665101 2048 256 34187 33829 311006 765059 2048 512 39289 53373 1552826 766492 4096 4 8807 8091 227832 135822 4096 8 8096 11209 517765 312004 4096 16 18960 19149 576258 562337 4096 32 23030 35276 372933 1096367 4096 64 1834 43997 1250645 1848528 4096 128 23575 41734 844559 1589432 4096 256 39425 47960 1482325 542656 4096 512 30479 50053 868160 600509 8192 4 5817 5540 348699 204335 8192 8 8301 10469 481911 496479 8192 16 17983 40807 1111397 1010972 8192 32 37661 42211 1046633 825800 8192 64 34404 66888 1125117 739081 8192 128 33958 52150 973838 777232 8192 256 28343 46806 622303 676016 8192 512 28030 53109 1018042 337340 16384 4 5298 6944 303873 266796 16384 8 11414 9678 431076 447355 16384 16 16667 19351 603730 608504 16384 32 20683 31917 768736 621053 16384 64 29828 36307 473964 376669 16384 128 32272 41311 1083804 734474 16384 256 27097 45865 482933 362366 16384 512 39170 41193 1044832 869968 32768 4 6818 8077 444179 183961 32768 8 10604 16210 636728 614945 32768 16 16265 19281 329970 405293 32768 32 22538 30623 1155630 692653 32768 64