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 21:35:13 2026 Auto Mode Machine = Linux oleg228-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-oleg228-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 1429 3996 603489 577521 64 8 7473 22888 679917 491815 64 16 7671 43536 484710 801764 64 32 3778 33877 1101022 969761 64 64 6365 14430 44510 1518251 128 4 2175 6683 398921 537512 128 8 7387 24595 744820 640042 128 16 6823 31683 584313 864797 128 32 14001 65705 1085013 976473 128 64 12761 79846 1206978 1269781 128 128 6640 23791 1421023 1040839 256 4 9130 9842 549283 306975 256 8 10660 20359 675391 403237 256 16 16778 35188 517016 507966 256 32 18162 66771 764334 985259 256 64 18995 53045 1319408 1128110 256 128 10456 42071 1437779 1058076 256 256 10630 108834 856386 524593 512 4 4644 5846 259113 480764 512 8 4698 14947 290286 602412 512 16 5393 40030 829847 859060 512 32 13130 29024 683736 957072 512 64 15490 55887 1524329 1086890 512 128 18363 36420 1357615 605128 512 256 25586 78914 1537424 1829505 512 512 46226 80415 1652157 1551867 1024 4 8059 4429 317703 239316 1024 8 8440 9999 846998 511500 1024 16 17823 24266 762491 348283 1024 32 24720 46425 423825 516606 1024 64 16721 59118 796130 758452 1024 128 50622 88093 1492963 980853 1024 256 21348 61057 1630707 562624 1024 512 32239 25067 176916 159056 2048 4 4938 5075 216078 166504 2048 8 8875 16055 393856 799971 2048 16 21177 23299 570501 189123 2048 32 27784 31013 811764 658091 2048 64 36787 86515 408057 1370047 2048 128 52719 109753 1430033 1235996 2048 256 19466 37503 407167 268588 2048 512 58612 119076 1774851 1410543 4096 4 7850 8485 918571 574216 4096 8 12108 13989 242928 174008 4096 16 13640 27813 706821 654002 4096 32 26864 20743 710152 1221218 4096 64 23787 27005 624590 211146 4096 128 26497 45610 658010 1257602 4096 256 34013 55257 591902 454652 4096 512 43333 60732 315100 1530118 8192 4 6441 11751 244159 240545 8192 8 7429 13723 357137 495469 8192 16 14747 16767 695712 555131 8192 32 18979 25870 670593 584719 8192 64 24334 33834 450750 384712 8192 128 30441 44552 1154801 373058 8192 256 30407 47362 436786 619721 8192 512 41728 33827 228214 322748 16384 4 5437 5581 256617 151499 16384 8 9016 10167 505383 484332 16384 16 10842 26660 711567 735992 16384 32 25517 61662 872043 776378 16384 64 16449 25709 529626 560404 16384 128 22985 29504 415575 444432 16384 256 31028 39789 692389 626175 16384 512 34622 48445 537106 717930 32768 4 6306 6960 360953 276738 32768 8 11925 11845 455630 205919 32768 16 14608 15029 235140 176538 32768 32