Re: AMD Quad Core clock problem?

From: Krzysztof Halasa
Date: Mon Apr 14 2008 - 21:11:31 EST


lsorense@xxxxxxxxxxxxxxxxxxx (Lennart Sorensen) writes:

> True, but usually they give you an option to turn it off in the BIOS to
> make the system actually work with things like NTP.
>
> Maybe I should have said "Any system with spread spectrum enabled".

I haven't investigated those spread spectrums at all but sometimes
there are options: "center" (the frequency is centered around the
nominal value, I guess) and "below" (or something like that). If done
correctly, "center" shouldn't have visible effect on NTP, should it?

The other important question is "what frequency has spread spectrum
enabled"? CPU (= TSC), HPET, RAM, something else?
--
Krzysztof Halasa
--
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/