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 11:12:53 2026 Auto Mode Machine = Linux oleg356-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-oleg356-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 3711 9326 647135 659861 64 8 7094 30445 818885 727850 64 16 2654 33808 1210227 863676 64 32 8896 69636 1143223 367817 64 64 8233 77185 1255511 1828508 128 4 2949 4254 522346 546819 128 8 4543 15265 1000121 518312 128 16 11088 54862 1022989 590094 128 32 10163 56389 1254941 99368 128 64 11594 72561 1421023 460514 128 128 14522 61810 445978 1911894 256 4 8352 5601 588414 508929 256 8 10072 25863 833776 775933 256 16 20618 36734 941213 870974 256 32 13888 32056 1540948 684432 256 64 21460 58848 1495866 1237306 256 128 8192 18641 1405778 1471270 256 256 21752 72831 430218 2152625 512 4 2836 5696 345043 96020 512 8 4709 5840 917804 191469 512 16 10821 29139 1140576 460062 512 32 24304 63344 1218910 94011 512 64 10007 51571 97916 1060063 512 128 13511 18941 1524329 1422357 512 256 13499 118105 127048 1647088 512 512 28422 80821 1556366 2124526 1024 4 8435 7173 589578 492045 1024 8 12234 19131 603411 668393 1024 16 23943 21257 305957 807050 1024 32 26080 29535 1014925 192480 1024 64 21908 34026 1490891 891292 1024 128 24883 42495 1229309 993330 1024 256 24349 77858 1599731 772781 1024 512 26383 95943 882683 1565902 2048 4 6086 6111 671886 389357 2048 8 11460 9164 922576 224339 2048 16 18641 18984 254978 225945 2048 32 24371 22625 367219 381100 2048 64 22400 32030 737472 572364 2048 128 24436 46582 1651654 903746 2048 256 52627 35924 1673209 807870 2048 512 25879 73708 852277 1014302 4096 4 4113 5221 310045 161234 4096 8 12617 8144 288166 129825 4096 16 16856 30054 543085 158870 4096 32 28814 35293 755032 882566 4096 64 15319 39126 856731 592944 4096 128 1515 30897 988894 527429 4096 256 31722 55517 520132 439340 4096 512 40572 42265 700424 412078 8192 4 4963 6171 172790 163096 8192 8 11193 17550 388136 392504 8192 16 25679 17550 411327 426777 8192 32 19102 31172 210056 331539 8192 64 30939 25914 303068 416089 8192 128 22462 47658 545697 381381 8192 256 28302 33122 528857 197749 8192 512 31304 37602 815452 1051180 16384 4 5881 4385 213350 115029 16384 8 7371 10416 722786 289439 16384 16 9302 14825 918687 699180 16384 32 17954 14411 368586 226758 16384 64 13684 24846 398676 377103 16384 128 26281 37154 1194938 649259 16384 256 49681 67299 784407 585605 16384 512 37107 53504 481627 774619 32768 4 9260 6330 232194 217193 32768 8 9952 15584 634608 440713 32768 16