Messages in this thread | | | Date | Mon, 25 Aug 2008 11:22:44 -0700 | From | Arjan van de Ven <> | Subject | Re: [BUG] cpufreq: constant cpu_khz |
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On Mon, 25 Aug 2008 19:57:12 +0200 Ingo Molnar <mingo@elte.hu> wrote:
> > * Dave Jones <davej@codemonkey.org.uk> wrote: > > > > hm, that too is due to the tsc.c unification - Alok Cc:-ed. > > > Applied your fix to x86/urgent. > > > > ACKed-by: Dave Jones <davej@redhat.com> > > > > Good catch Peter. I'm puzzled how that bug was latent on 64bit for > > so long with no-one realising though. > > i think it's the combination of these two factors: > > - bootup frequently is typically full-speed, so we calibrate things > right > > - cpufreq events are relatively slow-scale - and when they trigger > the system is definitely not under load. So how precisely the > scheduler functions isnt all that important in such scenarios - > there's tons of CPU power available. >
- many many of the 64 bit capable cpus are constant-tsc anyway
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