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 May 16 05:25:48 2026 Auto Mode Machine = Linux oleg206-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-oleg206-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 4671 11683 733819 620221 64 8 4691 2787 725882 703068 64 16 8825 29466 1183548 801764 64 32 6454 43571 1279447 1392258 64 64 12249 77654 688639 284418 128 4 8909 8329 279502 581781 128 8 5465 8312 326602 524900 128 16 5683 31801 1017175 189051 128 32 12684 17016 1939522 1093856 128 64 12957 98008 805138 1440082 128 128 17640 59640 1254941 350711 256 4 5187 7733 145457 214413 256 8 8557 6873 378103 16960 256 16 12771 17842 1053922 924200 256 32 10411 31457 1123389 288577 256 64 13661 24924 1212164 1201314 256 128 16102 56202 1439707 839644 256 256 18721 38875 1610276 1884399 512 4 9548 5481 511451 228169 512 8 5560 15027 566348 555220 512 16 6433 6022 285235 1094088 512 32 11179 14848 718990 1091863 512 64 14678 25045 541227 1224470 512 128 11252 32203 371806 1218910 512 256 25391 122225 1501940 1840480 512 512 13205 40560 433239 286989 1024 4 8035 7325 261158 208475 1024 8 8400 15658 819837 508171 1024 16 15728 17682 672369 488519 1024 32 22168 28061 768769 475432 1024 64 19876 44716 1279861 851195 1024 128 17036 77172 1343938 896689 1024 256 47658 50294 480270 1105865 1024 512 39399 72866 620587 1068983 2048 4 8929 6793 161641 150611 2048 8 8044 11906 644029 736650 2048 16 14421 15660 1395193 982289 2048 32 13867 20803 370530 1112425 2048 64 17137 27917 953398 295564 2048 128 33706 48548 373722 207853 2048 256 26144 45543 507565 1323808 2048 512 25783 32407 1861789 2035623 4096 4 6031 7246 333332 324382 4096 8 12660 1468 236598 348541 4096 16 11579 19964 374266 418095 4096 32 26338 21888 676564 331204 4096 64 20885 46174 700310 777693 4096 128 34037 36513 771511 728028 4096 256 33714 66519 735225 943129 4096 512 34398 66916 468923 508885 8192 4 3660 3956 118147 161581 8192 8 6273 7717 353208 341531 8192 16 9015 12631 292018 230968 8192 32 14342 21506 201242 424961 8192 64 20707 33851 629578 486779 8192 128 25364 48372 698499 794430 8192 256 27374 39895 171804 467665 8192 512 21464 47718 314909 485912 16384 4 4232 4538 221615 156850 16384 8 8334 9884 210043 439709 16384 16 15980 20227 452322 269034 16384 32 17729 30590 363337 341845 16384 64 21917 17799 741024 534757 16384 128 28137 73557 779151 590800 16384 256 30693 47531 649100 410658 16384 512 32776 63405 782951 240308 32768 4