Re: various laptop nagles - any suggestions? (note:2.6.19-rc2-mm1 but applies to multiple kernels)

[Andrew Morton]

On Fri, 20 Oct 2006 20:46:55 +0200
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> On Fri, 2006-10-20 at 11:26 -0700, Andrew Morton wrote:
> > On Fri, 20 Oct 2006 20:13:54 +0200
> > Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> > 
> > > > Also, NO_HZ breaks my laptop (and presumably quite a few others) quite
> > > > horridly, which means nobody can ship the feature.  Some runtime
> > > > turn-it-off work needs to be done there.
> > > 
> > > We can make a commandline switch as for highres. Is that sufficient ?
> > 
> > I doubt it.
> > 
> > I don't know how many machines will be affected by this, but I'd expect
> > it's quite a few - the Vaio has a less-than-one-year-old Intel CPU in it.
> 
> Is this still the broken lapic issue ?

yup.  iirc the standard FC5 SMP kernel runs dog-slowly on that machine too.

> I think about a detection
> mechanism for that one.

Thanks.
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