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: Mon Aug 24 17:21:14 2026 Auto Mode Machine = Linux oleg119-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-oleg119-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 1476 11508 581273 496362 64 8 4268 12830 769584 592827 64 16 7915 32424 789967 735831 64 32 5832 53549 1143223 627470 64 64 7863 116165 1163036 2006158 128 4 4381 5682 376538 498114 128 8 4769 17822 805138 743788 128 16 11919 52134 895074 852438 128 32 10504 71460 1085013 1067750 128 64 7749 30586 983630 1076312 128 128 9608 39715 1618028 718889 256 4 12737 4521 405674 515032 256 8 11336 25749 343069 658008 256 16 10818 27765 486779 561343 256 32 9097 26944 1514860 1040643 256 64 9089 80806 1300235 1031644 256 128 17780 69965 544823 433869 256 256 7104 32368 460476 2081678 512 4 5776 8262 233148 231789 512 8 10930 18420 507462 533297 512 16 7461 5738 150238 530530 512 32 21011 43831 1112797 1273861 512 64 24551 83850 639169 922535 512 128 55477 84087 1075459 1303238 512 256 19974 21855 58454 574069 512 512 25989 65506 806474 1028091 1024 4 3251 7759 121413 399390 1024 8 10717 11886 265698 115301 1024 16 20950 15693 944819 871401 1024 32 14098 8701 410891 695675 1024 64 15560 81854 1298041 1062110 1024 128 44400 53136 1368780 1150292 1024 256 38200 40305 645684 97617 1024 512 41088 85468 460053 531963 2048 4 3903 7906 579195 239729 2048 8 10163 7417 244798 238915 2048 16 13995 19601 387950 161909 2048 32 19876 36566 1157079 495759 2048 64 27814 43990 736460 300559 2048 128 36353 39138 752657 830843 2048 256 35145 59479 1031724 331878 2048 512 37321 52487 604507 522476 4096 4 7058 5534 348145 253686 4096 8 13492 16023 276627 372836 4096 16 12464 19034 372359 251425 4096 32 16843 20152 1243853 606102 4096 64 10392 1206 336347 1055935 4096 128 22423 26907 1234824 746892 4096 256 37003 36621 686897 398912 4096 512 32856 51973 588013 562853 8192 4 8575 7849 204851 374077 8192 8 9701 10289 211865 267468 8192 16 9715 13224 558270 448386 8192 32 10836 17618 279238 249148 8192 64 13583 26305 518154 641245 8192 128 20852 41616 1019401 619431 8192 256 22442 32719 563645 276972 8192 512 18681 81300 1201691 266944 16384 4 4644 4738 201745 140158 16384 8 8156 20964 592098 562440 16384 16 20774 13168 404892 371965 16384 32 22018 17694 491777 257403 16384 64 19481 30037 967528 631173 16384 128 29408 40360 996587 792723 16384 256 30489 44373 918024 599072 16384 512 32683 41546 688635 806095 32768 4 6431 6827 228919 226672 32768 8 10616 14282 760487 375611 32768 16