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    Subject[RFT] Port 0x80 I/O speed
    pancs:/tmp# for((i=0;i<20;i++)); do ./port80; done
    cycles: out 4098, in 2532
    cycles: out 3951, in 2389
    cycles: out 4043, in 2485
    cycles: out 4058, in 2393
    cycles: out 4056, in 2509
    cycles: out 4063, in 2394
    cycles: out 4076, in 2508
    cycles: out 4143, in 2395
    cycles: out 4062, in 2502
    cycles: out 4084, in 2383
    cycles: out 4055, in 2510
    cycles: out 4228, in 2410
    cycles: out 4071, in 2508
    cycles: out 4062, in 2502
    cycles: out 3982, in 2398
    cycles: out 4103, in 2391
    cycles: out 4160, in 2404
    cycles: out 4010, in 2462
    cycles: out 4105, in 2449
    cycles: out 4028, in 2477

    ---------

    processor : 0
    vendor_id : GenuineIntel
    cpu family : 15
    model : 2
    model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
    stepping : 9
    cpu MHz : 3150.045
    cache size : 512 KB
    physical id : 0
    siblings : 2
    core id : 0
    cpu cores : 1
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 2
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
    pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
    bogomips : 6303.37
    clflush size : 64

    processor : 1
    vendor_id : GenuineIntel
    cpu family : 15
    model : 2
    model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
    stepping : 9
    cpu MHz : 3150.045
    cache size : 512 KB
    physical id : 0
    siblings : 2
    core id : 0
    cpu cores : 1
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 2
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
    pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
    bogomips : 6300.14
    clflush size : 64


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