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Date:      Fri, 2 Jun 1995 23:36:09 -0400 (EDT)
From:      Charles Henrich <henrich@crh.cl.msu.edu>
To:        rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes)
Cc:        henrich@crh.cl.msu.edu, freebsd-hackers@freebsd.org
Subject:   Re: A performance mystery
Message-ID:  <199506030336.UAA17343@freefall.cdrom.com>
In-Reply-To: <199506030149.SAA08899@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Jun 2, 95 06:49:39 pm
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> ram-speed is a cache defeat program, it will *NOT* approximate bcopy rates,
> that is why I asked you to do iozone on 1/4 memory size.  I already saw
> your ram-speed results in the first posting.

Here goes with iozone auto, no delete (Micron has 64mb ram, Compaq 24mb)

Micron:

        MB      reclen  bytes/sec written   bytes/sec read
        1       512     2739137             9586980
        1       1024    3627506             5162220
        1       2048    4329604             4793490
        1       4096    6710886             3834792
        1       8192    8947848             3355443
        2       512     3355443             9256395
        2       1024    4880644             5064819
        2       2048    6242685             4067203
        2       4096    6882960             3890368
        2       8192    4793490             5162220
        4       512     2870967             10324440
        4       1024    3273603             10129639
        4       2048    3314017             10129639
        4       4096    3334601             9942053
        4       8192    3355443             9942053
        8       512     2848121             10129639
        8       1024    2840586             12936648
        8       2048    4772185             5368709
        8       4096    2878664             17602324
        8       8192    2774526             18199013
        16      512     2677660             9023040
        16      1024    2742635             11243369
        16      2048    2701237             13256071
        16      4096    2641431             13944699
        16      8192    2687714             14221746

Compaq:

    MB      reclen  bytes/sec written   bytes/sec read
    1       512     3195660             5162220
    1       1024    4628197             3728270
    1       2048    6710886             3728270
    1       4096    7456540             3532045
    1       8192    9586980             3355443
    2       512     4129776             5835553
    2       1024    5965232             4194304
    2       2048    7669584             3627506
    2       4096    9256395             3441480
    2       8192    11184810            3234162
    4       512     4329604             5965232
    4       1024    6391320             4161790
    4       2048    8388608             3603160
    4       4096    9761289             3397917
    4       8192    12782640            3158064
    8       512     4312216             6066337
    8       1024    6507526             4145721
    8       2048    8729608             3543702
    8       4096    7561562             3474892
    8       8192    13256071            3139595
    16      512     4391582             2547430
    16      1024    2664371             3754342
    16      2048    2966137             3278600
    16      4096    3144192             3098822
    16      8192    3360694             2890287

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