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    SubjectRe: [RFT] Port 0x80 I/O speed
    On Wed, Dec 12, 2007 at 12:31:18AM +0100, Rene Herman wrote:
    > Good day.
    >
    > Would some people on x86 (both 32 and 64) be kind enough to compile and run
    > the attached program? This is about testing how long I/O port access to
    > port 0x80 takes. It measures in CPU cycles so CPU speed is crucial in
    > reporting.

    vendor_id : GenuineIntel
    cpu family : 6
    model : 15
    model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
    stepping : 6

    cpu MHz : 2394.000
    cycles: out 1830, in 1166

    cpu MHz : 1596.000
    cycles: out 1925, in 1266

    ##

    vendor_id : GenuineIntel
    cpu family : 6
    model : 8
    model name : Pentium III (Coppermine)
    stepping : 10

    cpu MHz : 850.000
    cycles: out 1142, in 475

    cpu MHz : 700.000
    cycles: out 914, in 406

    ##

    vendor_id : AuthenticAMD
    cpu family : 6
    model : 7
    model name : AMD Duron(tm) processor
    stepping : 1

    cpu MHz : 1300.108
    cycles: out 2562, in 2562

    ##

    vendor_id : GenuineIntel
    cpu family : 6
    model : 5
    model name : Pentium II (Deschutes)
    stepping : 2

    cpu MHz : 449.242
    cycles: out 607, in 272

    --
    Ville Syrjälä
    syrjala@sci.fi
    http://www.sci.fi/~syrjala/
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