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: Sun Sep 6 16:23:48 2026 Auto Mode Machine = Linux oleg242-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-oleg242-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 2518 8366 592827 634890 64 8 3095 26811 913649 640954 64 16 3578 30490 347801 1033216 64 32 5292 60831 1526887 874936 64 64 6209 64391 1279447 1734015 128 4 6314 17809 684954 524387 128 8 6430 18773 546819 809997 128 16 5196 15230 1142750 847059 128 32 11865 40315 1455701 1142750 128 64 13321 72356 1306873 1451764 128 128 10340 43199 1217930 3657016 256 4 5949 9935 387379 588414 256 8 6584 14300 416210 809878 256 16 15281 23473 499925 907792 256 32 22340 103775 1437779 1298662 256 64 14087 64895 1152323 1062263 256 128 13356 96025 1415041 1639786 256 256 14076 85619 1300235 2223962 512 4 10312 14052 397255 367291 512 8 8139 20017 240377 671969 512 16 15206 33699 803757 1012101 512 32 12021 45890 1135750 670919 512 64 14924 31876 738777 1026126 512 128 15450 64265 1590957 1429934 512 256 29161 86837 837942 1652157 512 512 25519 58533 802256 1875849 1024 4 4338 12159 575285 392923 1024 8 20055 19926 310222 335208 1024 16 23825 13868 501466 150363 1024 32 22607 57280 1304348 1343938 1024 64 32457 54433 1304348 1245710 1024 128 35682 83036 1554004 1703807 1024 256 38366 86499 2370545 1159609 1024 512 41804 93617 1229309 1787480 2048 4 9684 12127 1006341 312909 2048 8 6668 9554 569669 356106 2048 16 20271 26159 698266 985106 2048 32 31489 39358 439005 874488 2048 64 38292 52004 1528239 714826 2048 128 39412 83848 1584038 801912 2048 256 31936 59284 1708146 1447382 2048 512 20763 51339 1035455 1159578 4096 4 5146 7575 279248 213468 4096 8 12088 13232 329818 412979 4096 16 15164 24448 705718 565428 4096 32 25718 53722 512452 743498 4096 64 38354 50357 533059 541869 4096 128 40184 72760 508132 547813 4096 256 46244 82765 1020921 949646 4096 512 48719 72759 1061153 889466 8192 4 5222 5665 245195 164461 8192 8 13138 10133 368529 338750 8192 16 10721 21874 592544 411805 8192 32 25664 25789 576256 294327 8192 64 14982 22205 317949 353237 8192 128 14390 56030 1335717 1097832 8192 256 45593 55144 1321741 781155 8192 512 49010 36778 565082 682732 16384 4 6297 4677 283686 123267 16384 8 5027 10340 243795 214849 16384 16 13521 19705 880524 567054 16384 32 31155 33898 748025 758662 16384 64 24770 25030 521800 371031 16384 128 24417 43732 518630 271550 16384 256 35373 47440 1450671 1326098 16384 512 52272 62650 547374 312557 32768 4 5896 7212 310003 147167 32768 8 10509 7909 201335 163188 32768 16 17619 17885 539675 415653 32768 32 20972 27122 563023 868279 32768 64 30207 37976 1014206 881195 32768 128 36365 46867 813422 801310 32768 256 35577 54005 1123428 714600 32768 512 44366 45794 937114 986039 65536 4