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

[Rene Herman]

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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/