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

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Message-Id: <1161369474.5274.280.camel@localhost.localdomain>
Date:	Fri, 20 Oct 2006 20:37:54 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andrew Morton <akpm@...l.org>
Cc:	teunis <teunis@...tersgift.com>, linux-kernel@...r.kernel.org,
	Dmitry Torokhov <dtor@...l.ru>, Ingo Molnar <mingo@...e.hu>
Subject: Re: various laptop nagles - any suggestions?   (note:
	2.6.19-rc2-mm1 but applies to multiple kernels)

On Fri, 2006-10-20 at 11:26 -0700, Andrew Morton wrote:
> On Fri, 20 Oct 2006 20:13:54 +0200
> Thomas Gleixner <tglx@...utronix.de> 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.
> 
> I'd expect that if a distro were to enable NO_HZ, they'd have a large
> number of unhappy users whose machines run like crap, some of whom would
> find out that they need to add some funny dont-run-like-crap option and
> some of whom would, after wasting considerable amounts of time, just give
> up and use windows or RH5.2 or something.
> 
> IOW, it would be vastly better to make it simply work out-of-the-box.

Sorry, I misinterpreted the "runtime turn-it-off work".

	tglx


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