Re: a faster way to gettimeofday? rdtsc strangeness

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 7 Mar 2002 14:41:21 +0000 (GMT)

> If you have a CPU that begin throttling it usually cut the CPU clock in
> half and the rdtsc counter count half a fast.

They normally adjust the STPCLK which is just fine. I've only seen a few
laptops that do it other ways. More fun are people running mixed 300/450
BP6 boards where the tsc varies by cpu
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/