Re: Dynamic tick for 2.6.14 - what's the plan?
From: Tony Lindgren (tony_at_atomide.com)
Date: 08/31/05
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Date: Wed, 31 Aug 2005 10:44:19 +0300 To: Alistair John Strachan <s0348365@sms.ed.ac.uk>
* Alistair John Strachan <s0348365@sms.ed.ac.uk> [050830 18:57]:
> On Tuesday 30 August 2005 13:31, Tony Lindgren wrote:
> [snip]
> > >
> > > Same issue, it's waiting on dynticks before being reworked.
> >
> > Also one more minor issue; Dyntick can cause slow boots with dyntick
> > enabled from boot because the there's not much in the timer queue
> > until init.
> >
> > This probably does not show up much on x86 though because of the
> > short hardware timers.
>
> You could disable it until jiffies >= 0; this covers the boot criteria and
> still allows for moderate savings post boot (though maybe on embedded systems
> the delay is too long?).
Yeah, that's true. Or just enable it from an init script via sysfs.
Tony
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- Previous message: Ingo Molnar: "Re: jack, PREEMPT_DESKTOP, delayed interrupts?"
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