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From: Mike Galbraith <efault@gmx.de>
To: "Carlos R. Mafra" <crmafra2@gmail.com>
Cc: Jan Knutar <jk-lkml@sci.fi>,
	linux-kernel@vger.kernel.org, Hans-Peter Jansen <hpj@urpla.net>,
	Jiri Kosina <jkosina@suse.cz>,
	David Newall <davidn@davidnewall.com>,
	Theodore Tso <tytso@mit.edu>, "Fred ." <eldmannen@gmail.com>
Subject: Re: Keys get stuck
Date: Thu, 13 Mar 2008 13:21:43 +0100	[thread overview]
Message-ID: <1205410903.6686.61.camel@marge.simson.net> (raw)
In-Reply-To: <20080313120238.GA3860@localhost.ift.unesp.br>


On Thu, 2008-03-13 at 09:02 -0300, 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)...?

No, it's not normal.  I'd say the VM makes bad decisions if _moderate_
swapping behaves badly.  Heavy swapping is another story.  (I think Rik
is addressing some VM issues as we speak, so hopefully it will improve
soonish) 

> Sorry for being off-topic, but I run a minimal Window Maker
> desktop in a P4 3.0 GHz with 512 MB of RAM (around 140 MB
> being used as per 'free'), and trying to load a 380 MB text
> file in xjed editor makes my whole desktop quite unfair...
> it takes tens of seconds to switch desktop, type things in
> the terminal etc. 
> 
> When xjed finishes loading the text file, everything comes
> back to "fair" again.
> 
> Is there some law in the nature of computers which says
> that when swapping everything else waits for swap to finish 
> its business? I hope not :-)

Me too.  In the past, I tested swap heavily (and beat it into submission
when it misbehaved for me), but haven't tested swap performance since
becoming fairly ram-wealthy.

	-Mike


  parent reply	other threads:[~2008-03-13 12:21 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-11 23:32 Keys get stuck Fred .
2008-03-12  0:04 ` Andrew Morton
2008-03-12  8:48 ` Sebastien Dugue
2008-03-12 10:32 ` Jiri Kosina
2008-03-12 10:44   ` David Newall
2008-03-12 14:47     ` Theodore Tso
2008-03-12 15:20       ` Stephen Hemminger
2008-03-12 16:47       ` David Newall
2008-03-12 16:49         ` Jiri Kosina
2008-03-12 21:22           ` Hans-Peter Jansen
2008-03-13  5:42             ` Mike Galbraith
2008-03-13  9:48               ` Jan Knutar
2008-03-13 11:28                 ` Mike Galbraith
2008-03-13 11:31                   ` Jiri Kosina
2008-03-13 12:02                     ` Mike Galbraith
2008-03-13 12:02                   ` Carlos R. Mafra
2008-03-13 12:06                     ` Jiri Kosina
2008-03-13 12:19                       ` Carlos R. Mafra
2008-03-13 12:21                     ` Mike Galbraith [this message]
2008-03-13 14:18                     ` Helge Hafting
2008-03-13 15:13                       ` Swap makes X unfair (was Re: Keys get stuck) Carlos R. Mafra
2008-03-14 11:02                         ` Helge Hafting
2008-03-15 22:11                           ` Carlos R. Mafra
2008-03-16 15:27                           ` Jan Knutar
2008-03-14 18:34                       ` Keys get stuck Pavel Machek
2008-03-13 17:14     ` Pavel Machek
2008-03-13 17:56       ` Fred .
2008-03-13 18:03         ` Pavel Machek
2008-03-14  9:21       ` Jiri Kosina
2008-03-14 18:24         ` Pavel Machek
2008-03-14 21:34           ` Lennart Sorensen
2008-03-14 13:30       ` Lennart Sorensen
2008-03-14 19:35         ` Pavel Machek
2008-03-13 13:01 ` Mark Lord
     [not found] <a6meN-2aj-39@gated-at.bofh.it>
     [not found] ` <a6wxo-1xY-1@gated-at.bofh.it>
     [not found]   ` <a6wQO-1YG-1@gated-at.bofh.it>
     [not found]     ` <a6Zgb-5Hj-55@gated-at.bofh.it>
     [not found]       ` <a7iiO-2fq-39@gated-at.bofh.it>
2008-03-14 20:20         ` Bodo Eggert

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