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

[Rene Herman]

On 12-12-07 01:14, Maxim Levitsky wrote:

> CPU frequency locked to 2128.000 Mhz:
> maxim@MAIN:~/tmp$ sudo ./port800
> cycles: out 1650, in 1065

> CPU frequency locked to: 1596.000 Mhz
> maxim@MAIN:~/tmp$ sudo ./port800
> cycles: out 1730, in 1138

> A bit strange, isn't it?

Well, yes. Don't know what that effect is. A bus-clock divided from the CPU 
clock comes to mind, but I believe that shouldn't happen to LPC.

Anyways, we're looking for an upper bound and that's still nicely below 2 us 
on everything upto now, so I guess it doesn't matter all that much. Thanks!

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/