Date: Tue, 20 Nov 2012 10:13:15 -0600
From: Bruno Wolff III <bruno@wolff.to>
To: Josh Boyer <jwboyer@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>, Zdenek Kabelac <zkabelac@redhat.com>,
        Seth Jennings <sjenning@linux.vnet.ibm.com>,
        Jiri Slaby <jslaby@suse.cz>, Valdis.Kletnieks@vt.edu,
        Jiri Slaby <jirislaby@gmail.com>, linux-mm@kvack.org,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Rik van Riel <riel@redhat.com>,
        Robert Jennings <rcj@linux.vnet.ibm.com>,
        Thorsten Leemhuis <fedora@leemhuis.info>
Subject: Re: [PATCH] Revert "mm: remove __GFP_NO_KSWAPD"
Message-ID: <20121120161315.GA8338@wolff.to>
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 <20121109090635.GG8218@suse.de>
 <509F6C2A.9060502@redhat.com>
 <20121112113731.GS8218@suse.de>
 <CA+5PVA75XDJjo45YQ7+8chJp9OEhZxgPMBUpHmnq1ihYFfpOaw@mail.gmail.com>
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On Tue, Nov 20, 2012 at 10:38:45 -0500,
   Josh Boyer <jwboyer@gmail.com> wrote:
>
>We've been tracking it in https://bugzilla.redhat.com/show_bug.cgi?id=866988
>and people say this revert patch doesn't seem to make the issue go away
>fully.  Thorsten has created another kernel with the other patch applied
>for testing.
>
>At least I think that is the latest status from the bug.  Hopefully the
>commenters will chime in.

I am seeing kswapd0 hogging a cpu right now. I have two rsyncs and an md sync 
running and a couple of large memory processes (java and firefox) idle.

I haven't been seeing this happen as often as previously. Before doing a 
yum update with an rsync was pretty good at triggering the problem. Now, 
not so much.
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