From: Pekka Enberg <penberg@kernel.org>
To: Mel Gorman <mgorman@novell.com>
Cc: James Bottomley <James.Bottomley@suse.de>,
Mel Gorman <mgorman@suse.de>, Jan Kara <jack@suse.cz>,
colin.king@canonical.com, Chris Mason <chris.mason@oracle.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Christoph Lameter <cl@linux.com>
Subject: Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.
Date: Tue, 10 May 2011 13:33:11 +0300 [thread overview]
Message-ID: <BANLkTi=JwoHtTky=mF5fkhS23mm_dJu4og@mail.gmail.com> (raw)
In-Reply-To: <20110510102141.GA4149@novell.com>
On Tue, May 10, 2011 at 1:21 PM, Mel Gorman <mgorman@novell.com> wrote:
> It goes on. A number of filesystem and network paths are being hit
> with high-order allocs. i915 was a red herring, it's present but not
> in massive numbers. The filesystem, network and mempool allocations
> are likely to be kicking kswapd awake frequently and hurting overall
> system performance as a result.
>
> I really would like to hear if the fix makes a big difference or
> if we need to consider forcing SLUB high-order allocations bailing
> at the first sign of trouble (e.g. by masking out __GFP_WAIT in
> allocate_slab). Even with the fix applied, kswapd might be waking up
> less but processes will still be getting stalled in direct compaction
> and direct reclaim so it would still be jittery.
Yes, sounds reasonable to me.
Pekka
WARNING: multiple messages have this Message-ID (diff)
From: Pekka Enberg <penberg@kernel.org>
To: Mel Gorman <mgorman@novell.com>
Cc: James Bottomley <James.Bottomley@suse.de>,
Mel Gorman <mgorman@suse.de>, Jan Kara <jack@suse.cz>,
colin.king@canonical.com, Chris Mason <chris.mason@oracle.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Christoph Lameter <cl@linux.com>
Subject: Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.
Date: Tue, 10 May 2011 13:33:11 +0300 [thread overview]
Message-ID: <BANLkTi=JwoHtTky=mF5fkhS23mm_dJu4og@mail.gmail.com> (raw)
In-Reply-To: <20110510102141.GA4149@novell.com>
On Tue, May 10, 2011 at 1:21 PM, Mel Gorman <mgorman@novell.com> wrote:
> It goes on. A number of filesystem and network paths are being hit
> with high-order allocs. i915 was a red herring, it's present but not
> in massive numbers. The filesystem, network and mempool allocations
> are likely to be kicking kswapd awake frequently and hurting overall
> system performance as a result.
>
> I really would like to hear if the fix makes a big difference or
> if we need to consider forcing SLUB high-order allocations bailing
> at the first sign of trouble (e.g. by masking out __GFP_WAIT in
> allocate_slab). Even with the fix applied, kswapd might be waking up
> less but processes will still be getting stalled in direct compaction
> and direct reclaim so it would still be jittery.
Yes, sounds reasonable to me.
Pekka
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next prev parent reply other threads:[~2011-05-10 10:33 UTC|newest]
Thread overview: 138+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-27 16:09 [BUG] fatal hang untarring 90GB file, possibly writeback related James Bottomley
2011-04-27 16:09 ` James Bottomley
2011-04-27 16:33 ` Chris Mason
2011-04-27 16:33 ` Chris Mason
2011-04-27 16:50 ` James Bottomley
2011-04-27 16:50 ` James Bottomley
2011-04-27 16:50 ` James Bottomley
2011-04-27 16:54 ` Chris Mason
2011-04-27 16:54 ` Chris Mason
2011-04-27 17:21 ` James Bottomley
2011-04-27 17:21 ` James Bottomley
2011-04-27 17:21 ` James Bottomley
2011-04-27 17:34 ` Chris Mason
2011-04-27 17:34 ` Chris Mason
2011-04-27 17:50 ` James Bottomley
2011-04-27 17:50 ` James Bottomley
2011-04-27 18:25 ` Colin Ian King
2011-04-27 18:25 ` Colin Ian King
2011-04-28 15:57 ` James Bottomley
2011-04-28 15:57 ` James Bottomley
2011-04-27 20:05 ` James Bottomley
2011-04-27 20:05 ` James Bottomley
2011-04-28 11:36 ` Colin Ian King
2011-04-28 11:36 ` Colin Ian King
2011-04-28 12:29 ` Chris Mason
2011-04-28 12:29 ` Chris Mason
2011-04-28 13:42 ` Colin Ian King
2011-04-28 13:42 ` Colin Ian King
2011-04-28 13:45 ` Chris Mason
2011-04-28 13:45 ` Chris Mason
2011-04-28 14:01 ` Colin Ian King
2011-04-28 14:04 ` Chris Mason
2011-04-28 14:04 ` Chris Mason
2011-04-28 15:23 ` Colin Ian King
2011-04-28 14:25 ` Jan Kara
2011-04-28 14:25 ` Jan Kara
2011-04-28 14:33 ` Jan Kara
2011-04-28 14:33 ` Jan Kara
2011-04-28 14:58 ` Colin Ian King
2011-04-28 22:40 ` Jan Kara
2011-04-28 22:40 ` Jan Kara
2011-04-28 22:44 ` James Bottomley
2011-04-28 22:44 ` James Bottomley
2011-05-03 18:55 ` Colin Ian King
2011-05-03 18:55 ` Colin Ian King
2011-04-28 16:11 ` James Bottomley
2011-04-28 16:11 ` James Bottomley
2011-04-28 14:49 ` James Bottomley
2011-04-28 14:49 ` James Bottomley
2011-04-28 13:52 ` Jan Kara
2011-04-28 13:52 ` Jan Kara
2011-04-28 14:07 ` Mel Gorman
2011-04-28 14:07 ` Mel Gorman
2011-04-28 14:25 ` James Bottomley
2011-04-28 14:25 ` James Bottomley
2011-04-28 15:08 ` Mel Gorman
2011-04-28 15:08 ` Mel Gorman
2011-04-28 16:01 ` James Bottomley
2011-04-28 16:01 ` James Bottomley
2011-04-28 16:50 ` James Bottomley
2011-04-28 16:50 ` James Bottomley
2011-04-28 16:56 ` James Bottomley
2011-04-28 16:56 ` James Bottomley
2011-04-28 17:18 ` Mel Gorman
2011-04-28 17:18 ` Mel Gorman
2011-04-28 18:30 ` James Bottomley
2011-04-28 18:30 ` James Bottomley
2011-04-28 19:21 ` Mel Gorman
2011-04-28 19:21 ` Mel Gorman
2011-04-28 19:59 ` James Bottomley
2011-04-28 19:59 ` James Bottomley
2011-04-28 20:27 ` Mel Gorman
2011-04-28 20:27 ` Mel Gorman
2011-04-29 15:02 ` James Bottomley
2011-04-29 15:02 ` James Bottomley
2011-04-28 21:12 ` James Bottomley
2011-04-28 21:12 ` James Bottomley
2011-04-28 22:43 ` James Bottomley
2011-04-28 22:43 ` James Bottomley
2011-05-03 9:13 ` Mel Gorman
2011-05-03 9:13 ` Mel Gorman
2011-05-03 14:13 ` James Bottomley
2011-05-03 14:13 ` James Bottomley
2011-05-03 14:22 ` James Bottomley
2011-05-06 7:42 ` Mel Gorman
2011-05-06 7:42 ` Mel Gorman
2011-05-06 8:07 ` Mel Gorman
2011-05-09 18:16 ` James Bottomley
2011-05-09 18:16 ` James Bottomley
2011-05-10 10:21 ` Mel Gorman
2011-05-10 10:21 ` Mel Gorman
2011-05-10 10:33 ` Pekka Enberg [this message]
2011-05-10 10:33 ` Pekka Enberg
2011-05-10 14:01 ` James Bottomley
2011-05-10 14:01 ` James Bottomley
2011-05-10 14:35 ` Mel Gorman
2011-05-10 14:35 ` Mel Gorman
2011-05-10 15:29 ` James Bottomley
2011-05-10 15:29 ` James Bottomley
2011-05-10 15:57 ` James Bottomley
2011-05-10 15:57 ` James Bottomley
2011-05-10 17:05 ` James Bottomley
2011-05-10 17:05 ` James Bottomley
2011-05-10 17:17 ` Mel Gorman
2011-05-10 17:17 ` Mel Gorman
2011-05-10 17:29 ` James Bottomley
2011-05-10 17:29 ` James Bottomley
2011-05-10 21:08 ` Raghavendra D Prabhu
2011-05-11 9:16 ` Mel Gorman
2011-05-11 9:16 ` Mel Gorman
2011-05-06 11:42 ` Mel Gorman
2011-05-06 11:42 ` Mel Gorman
2011-05-06 15:44 ` Mel Gorman
2011-05-06 15:44 ` Mel Gorman
2011-05-06 19:14 ` James Bottomley
2011-05-06 19:14 ` James Bottomley
2011-05-06 19:37 ` Mel Gorman
2011-05-06 19:37 ` Mel Gorman
2011-05-10 5:37 ` Colin Ian King
2011-05-10 5:37 ` Colin Ian King
2011-05-10 5:37 ` Colin Ian King
2011-05-06 15:58 ` James Bottomley
2011-05-03 9:54 ` Colin Ian King
2011-05-03 9:54 ` Colin Ian King
2011-04-28 17:10 ` Colin Ian King
2011-04-28 17:10 ` Colin Ian King
2011-04-28 0:37 ` Dave Chinner
2011-04-28 0:37 ` Dave Chinner
2011-04-29 10:23 ` Sedat Dilek
2011-04-29 10:23 ` Sedat Dilek
2011-04-29 15:37 ` James Bottomley
2011-04-29 15:37 ` James Bottomley
2011-04-29 16:31 ` James Bottomley
2011-04-29 16:31 ` James Bottomley
2011-04-29 18:02 ` James Bottomley
2011-04-29 18:02 ` James Bottomley
2011-05-02 20:04 ` James Bottomley
2011-05-02 20:04 ` James Bottomley
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