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    Subjectlmbench results for misc kernels
    ok, these are old benchmarks, but i noticed a few exceptional results
    in the lot, so i thought they *might* be of use to someone.

    i'm not sure how reliable/useful the lmbench is, but i noticed that
    page fault latencies of pre5 and pre6 are unusually high. i'm new at
    all of this, so i don't know if this is an acceptable trade-off. I also
    noticed that the pre4-ac3 showed exceptionally low local communication
    latencies -- again, i don't know the real meaning of this.

    brent


    *personal request* (reply to damonbrent@earthlink.net to lighten
    mail-list traffic)
    i have a fair knowledge of C. i would like to eventually be able
    to contribute to this development (or atleast entertain myself with
    experiments). what is the best way to attack this learning curve?
    where to best start? Thanks!

    ===============================================================================
    (in this order)
    2.2.0pre4-ac3
    2.2.0pre5
    2.2.0pre5-arca-VM11
    2.2.0pre6
    L M B E N C H 1 . 9 S U M M A R Y

    Processor, Processes - times in microseconds - smaller is better
    ----------------------------------------------------------------
    Host OS Mhz null null open selct sig sig fork
    exec sh
    call I/O stat clos inst hndl proc
    proc proc
    --------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ----
    ---- ----
    i586-linu Linux 2.2.0-p 299 0.7 1.1 7 10 0.06K 1.9 3 0.5K
    3K 16K
    i586-linu Linux 2.2.0-p 299 0.7 1.1 8 10 0.06K 1.9 3 0.6K
    3K 17K
    i586-linu Linux 2.2.0-p 299 0.7 1.1 8 10 0.07K 2.0 3 0.6K
    3K 17K
    i586-linu Linux 2.2.0-p 299 0.7 1.3 7 10 0.08K 1.9 3 0.6K
    3K 17K

    Context switching - times in microseconds - smaller is better
    -------------------------------------------------------------
    Host OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K
    16p/64K
    ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw
    --------- ------------- ----- ------ ------ ------ ------ -------
    -------
    i586-linu Linux 2.2.0-p 4 17 146 43 161 45 230
    i586-linu Linux 2.2.0-p 3 16 162 53 200 59 243
    i586-linu Linux 2.2.0-p 5 16 161 43 199 47 225
    i586-linu Linux 2.2.0-p 6 15 155 43 203 56 234

    *Local* Communication latencies in microseconds - smaller is better
    -------------------------------------------------------------------
    Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
    ctxsw UNIX UDP TCP conn
    --------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
    i586-linu Linux 2.2.0-p 4 14 28 58 130
    i586-linu Linux 2.2.0-p 3 18 39 64 160
    i586-linu Linux 2.2.0-p 5 15 31 56 149
    i586-linu Linux 2.2.0-p 6 16 33 67 152

    File & VM system latencies in microseconds - smaller is better
    --------------------------------------------------------------
    Host OS 0K File 10K File Mmap Prot
    Page
    Create Delete Create Delete Latency Fault
    Fault
    --------- ------------- ------ ------ ------ ------ ------- -----
    -----
    i586-linu Linux 2.2.0-p 17 2 39 4 8253 2
    1.2K
    i586-linu Linux 2.2.0-p 7 2 43 4 8679 2
    5.1K
    i586-linu Linux 2.2.0-p 17 2 42 4 8463 2
    1.3K
    i586-linu Linux 2.2.0-p 17 2 40 4 8563 2
    8.5K

    *Local* Communication bandwidths in MB/s - bigger is better
    -----------------------------------------------------------
    Host OS Pipe AF TCP File Mmap Bcopy Bcopy Mem
    Mem
    UNIX reread reread (libc) (hand) read
    write
    --------- ------------- ---- ---- ---- ------ ------ ------ ------ ----
    -----
    i586-linu Linux 2.2.0-p 116 59 -1 66 193 65 66
    193 100
    i586-linu Linux 2.2.0-p 114 58 -1 71 194 69 70
    193 104
    i586-linu Linux 2.2.0-p 76 53 29 70 193 64 65
    193 100
    i586-linu Linux 2.2.0-p 98 55 30 71 193 68 70
    193 106

    Memory latencies in nanoseconds - smaller is better
    (WARNING - may not be correct, check graphs)
    ---------------------------------------------------
    Host OS Mhz L1 $ L2 $ Main mem Guesses
    --------- ------------- --- ---- ---- -------- -------
    i586-linu Linux 2.2.0-p 299 6 80 157
    i586-linu Linux 2.2.0-p 299 6 81 158
    i586-linu Linux 2.2.0-p 299 6 92 158
    i586-linu Linux 2.2.0-p 299 6 94 157

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