linux-kernel - Re: kswapd0: wxcessive CPU usage

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Message-ID: <119175.1349979570@turing-police.cc.vt.edu>
Date:	Thu, 11 Oct 2012 14:19:30 -0400
From:	Valdis.Kletnieks@...edu
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Jiri Slaby <jirislaby@...il.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: kswapd0: wxcessive CPU usage

On Thu, 11 Oct 2012 19:59:33 +0200, Jiri Slaby said:
> On 10/11/2012 07:56 PM, Valdis.Kletnieks@...edu wrote:
> > On Thu, 11 Oct 2012 17:34:24 +0200, Jiri Slaby said:
> >> On 10/11/2012 03:44 PM, Valdis.Kletnieks@...edu wrote:
> >>> So at least we know we're not hallucinating. :)
> >>
> >> Just a thought? Do you have raid?
> >
> > Nope, just a 160G laptop spinning hard drive. Filesystems are ext4
> > on LVM on a cryptoLUKS partition on /dev/sda2.
>
> Ok, it's maybe compaction. Do you have CONFIG_COMPACTION=y?

# zgrep COMPAC /proc/config.gz
CONFIG_COMPACTION=y

Hope that tells you something useful.



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