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

On 12-12-07 00:55, Nigel Cunningham wrote:

(AMD 1.8GHz Turion, running at 800MHz. ATI RS480 - Mitac 8350 mobo)

nigel@home:~/Downloads$ gcc port80.c -o port80
nigel@home:~/Downloads$ sudo ./port80
cycles: out 1235, in 1207

Looking good.

nigel@home:~/Downloads$ gcc -O2 port80.c -o port80
nigel@home:~/Downloads$ sudo ./port80
cycles: out 1844674407370794, in 1844674407369408

Obviously not. I suppose this changes with -m32 on the GCC command line? (sorry for missing that, I have no 64-bit machines).

Rene.
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