From: Mel Gorman <mgorman@suse.de>
To: P?draig Brady <P@draigBrady.com>
Cc: Minchan Kim <minchan.kim@gmail.com>,
Andrew Lutomirski <luto@mit.edu>,
linux-mm@kvack.org
Subject: Re: Root-causing kswapd spinning on Sandy Bridge laptops?
Date: Fri, 24 Jun 2011 13:51:31 +0100 [thread overview]
Message-ID: <20110624125131.GQ9396@suse.de> (raw)
In-Reply-To: <4E0465D8.3080005@draigBrady.com>
On Fri, Jun 24, 2011 at 11:24:24AM +0100, P?draig Brady wrote:
> On 24/06/11 10:27, Minchan Kim wrote:
> > Hi Andrew,
> >
> > Sorry but right now I don't have a time to dive into this.
> > But it seems to be similar to the problem Mel is looking at.
> > Cced him.
> >
> > Even, Padraig Brady seem to have a reproducible scenario.
> > I will look when I have a time.
> > I hope I will be back sooner or later.
>
> My reproducer is (I've 3GB RAM, 1.5G swap):
> dd bs=1M count=3000 if=/dev/zero of=spin.test
>
> To stop it spinning I just have to uncache the data,
> the handiest way being:
> rm spin.test
>
> To confirm, the top of the profile I posted is:
> i915_gem_object_bind_to_gtt
> shrink_slab
>
I don't think it's an i915 bug. Another candidate fix in the other
thread that Padraig started.
--
Mel Gorman
SUSE Labs
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-06-24 12:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-24 6:22 Root-causing kswapd spinning on Sandy Bridge laptops? Andrew Lutomirski
2011-06-24 9:27 ` Minchan Kim
2011-06-24 9:38 ` Minchan Kim
2011-06-24 10:24 ` Pádraig Brady
2011-06-24 12:15 ` Pádraig Brady
2011-06-24 12:51 ` Mel Gorman [this message]
2011-06-24 13:32 ` Andrew Lutomirski
2011-06-24 18:44 ` Andi Kleen
2011-06-24 18:48 ` Andrew Lutomirski
2011-06-24 19:13 ` Andi Kleen
2011-06-24 19:17 ` Christoph Hellwig
2011-06-24 18:54 ` Chris Mason
2011-06-27 11:03 ` Mel Gorman
2011-06-27 20:18 ` James Bottomley
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110624125131.GQ9396@suse.de \
--to=mgorman@suse.de \
--cc=P@draigBrady.com \
--cc=linux-mm@kvack.org \
--cc=luto@mit.edu \
--cc=minchan.kim@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.