linux-kernel - Re: Keys get stuck

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Date:	Fri, 14 Mar 2008 19:34:39 +0100
From:	Pavel Machek <pavel@....cz>
To:	Helge Hafting <helge.hafting@...el.hist.no>
Cc:	Mike Galbraith <efault@....de>, Jan Knutar <jk-lkml@....fi>,
	linux-kernel@...r.kernel.org, Hans-Peter Jansen <hpj@...la.net>,
	Jiri Kosina <jkosina@...e.cz>,
	David Newall <davidn@...idnewall.com>,
	Theodore Tso <tytso@....edu>, "Fred ." <eldmannen@...il.com>
Subject: Re: Keys get stuck

On Thu 2008-03-13 15:18:10, Helge Hafting wrote:
> Carlos R. Mafra wrote:
> >On Thu 13.Mar'08 at 12:28:13 +0100, Mike Galbraith 
> >wrote:
> >  
> >>[...]
> >>Swap can definitely keep X off the cpu for extended 
> >>periods,
> >>[...]
> >>    
> >
> >So I would like to ask if swap letting X (and 
> >everything else
> >in my experience) out of the cpu for extended periods is
> >considered normal behaviour, in the sense that nobody is
> >trying to "fix" it (due to it being considered 
> >impossible
> >to fix)...?
> >  
> Yes, this is perfectly normal. A heavily swapping machine
> will swap out parts of X.
> 
> Now, if X has a need for low-latency for keyboard 
> handling,

If X needs low-latency for keyboard, X is misdesigned.

Kernel already provides timestamped input events...
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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