Messages in this thread |  | | Subject | Re: Linux time code | | From | john stultz <> | | Date | Tue, 29 Aug 2006 12:23:05 -0700 |
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On Mon, 2006-08-28 at 23:28 -0400, linux@horizon.com wrote: > > With the new clocksource code, we can (currently just i386, but the > > architecture is generic and I'm working on the other arches) make use of > > continuous clocksources for accumulating time instead of having the deal > > with the problematic PIT (as well as the lost ticks issue). > > If it's there, it's great, but what about i386EX embedded boards and > the like?
The PIT clocksource is available for those situations, but is one of the lowest rated clocksources, so anything else will be used if its available.
> It's approximately manageable on uniprocessor, but can > I be sure there's always something (what?) better than the PIT on > *every* SMP system?
Yea. With the exception of NUMAQ almost every i386 SMP system either can use the TSC or has an alternative clocksource (acpi pm, hpet, cyclone).
> I need to study what you've done and see how to use it.
Let me know if you have any questions or thoughts about it.
thanks -john
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