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

Jiri Slaby wrote:

On Dec 12, 2007 9:48 AM, Jiri Slaby <[email protected]> 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 µs, on the high end....

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

Definitely an outlier; 2.5 µs here.

	-hpa
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