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DateThu, 09 Sep 2004 01:09:17 -0700
FromGeorge Anzinger <>
SubjectRe: [RFC][PATCH] new timeofday core subsystem (v.A0)
Jesse Barnes wrote:
> On Wednesday, September 8, 2004 9:31 pm, George Anzinger wrote:
> >>a.) resolution.  If you don't put a limit on this you will invite timer
>>storms. Currently, by useing 1/HZ resolution, all timer "line up" on ticks
>>and reduce the interrupt overhead that would occure if we actually tried to
>>give "exactly" what was asked for.  This is a matter of math and can be
>>handled (assuming we resist the urge to go shopping :))> > > This can be bad though if lots of CPUs hit it at the same time or nearly so if 
> they're all trying to write the same cacheline or two.

I think that most of the SMP issues your talking about have gone away with 2.6 
where we have seperate timer lists for each cpu.


-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml

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