Messages in this thread | | | Date | Tue, 10 Jul 2007 11:22:21 +0200 (CEST) | From | Jan Engelhardt <> | Subject | Re: clocksource tsc unstable |
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On Jul 9 2007 22:54, Pawel Dziepak wrote:
> As far as i know Pentium M processors have dynamically changed clock > speed (ofc to save power). That's why kernel notice that TSC is > unstable (it is indeed). On my Athlon 64 I have similar situation, > because CPU frequency is dynamically changed. > I don't think that there is an easy way to fix it (it is not even a > bug), time-stamp counter is not perfect...
Also see http://lkml.org/lkml/2007/5/6/29
The TSC is supposed to tick at the CPU rate (unless it's a constant_tsc, see /proc/cpuinfo flags:), so on frequency change, this ought to happen. The kernel will automatically switch to something else. There's acpi_pm and, IIRC, pit.
Jan -- - 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/
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