Messages in this thread | | | Subject | Re: Clocksource tsc unstable (delta = -8589361717 ns) in current git | From | Peter Zijlstra <> | Date | Tue, 26 Oct 2010 16:38:50 +0200 |
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On Tue, 2010-10-26 at 15:58 +0200, Markus Trippelsdorf wrote: > > > > This is strange, tsc is actually stable on your F10h revC. > > Yes. constant_tsc is among the CPU flags.
constant_tsc only means the TSC is not affected by cpu freq changes.
It has zero relevance to cross-cpu sync of the TSC. The clocksource stuff requires your TSC to be synchronous over all your CPUs.
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