Re: [RFT] Port 0x80 I/O speed

[H. Peter Anvin]

Jiri Slaby wrote:
> On Dec 12, 2007 9:48 AM, Jiri Slaby <jirislaby@xxxxxxxxx> wrote:
> > On 12/12/2007 12:31 AM, 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
>
> model name      : Intel(R) Xeon(R) CPU           E5335  @ 2.00GHz 
> cycles: out 3217, in 1898

1.6 Âs, on the high end....

> model name      : Dual Core AMD Opteron(tm) Processor 275
> cycles: out 5508, in 5524

Definitely an outlier; 2.5 Âs here.

	-hpa
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