From: Minchan Kim <minchan.kim@gmail.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>, Jan Kara <jack@suse.cz>,
LKML <linux-kernel@vger.kernel.org>, XFS <xfs@oss.sgi.com>,
Christoph Hellwig <hch@infradead.org>,
Linux-MM <linux-mm@kvack.org>,
Wu Fengguang <fengguang.wu@intel.com>,
Johannes Weiner <jweiner@redhat.com>
Subject: Re: [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2
Date: Fri, 29 Jul 2011 18:48:16 +0900 [thread overview]
Message-ID: <20110729094816.GG1843@barrios-desktop> (raw)
In-Reply-To: <20110728113852.GN3010@suse.de>
On Thu, Jul 28, 2011 at 12:38:52PM +0100, Mel Gorman wrote:
> On Thu, Jul 28, 2011 at 01:18:21AM +0900, Minchan Kim wrote:
> > On Thu, Jul 21, 2011 at 05:28:42PM +0100, Mel Gorman wrote:
> > > Note how preventing kswapd reclaiming dirty pages pushes up its CPU
<snip>
> > > usage as it scans more pages but it does not get excessive due to
> > > the throttling.
> >
> > Good to hear.
> > The concern of this patchset was early OOM kill with too many scanning.
> > I can throw such concern out from now on.
> >
>
> At least, I haven't been able to trigger a premature OOM.
AFAIR, Andrew had a premature OOM problem[1] but I couldn't track down at that time.
I think this patch series might solve his problem. Although it doesn't, it should not accelerate
his problem, at least.
Andrew, Could you test this patchset?
[1] https://lkml.org/lkml/2011/5/25/415
--
Kind regards,
Minchan Kim
_______________________________________________
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WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan.kim@gmail.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>, XFS <xfs@oss.sgi.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@infradead.org>,
Johannes Weiner <jweiner@redhat.com>,
Wu Fengguang <fengguang.wu@intel.com>, Jan Kara <jack@suse.cz>,
Rik van Riel <riel@redhat.com>
Subject: Re: [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2
Date: Fri, 29 Jul 2011 18:48:16 +0900 [thread overview]
Message-ID: <20110729094816.GG1843@barrios-desktop> (raw)
In-Reply-To: <20110728113852.GN3010@suse.de>
On Thu, Jul 28, 2011 at 12:38:52PM +0100, Mel Gorman wrote:
> On Thu, Jul 28, 2011 at 01:18:21AM +0900, Minchan Kim wrote:
> > On Thu, Jul 21, 2011 at 05:28:42PM +0100, Mel Gorman wrote:
> > > Note how preventing kswapd reclaiming dirty pages pushes up its CPU
<snip>
> > > usage as it scans more pages but it does not get excessive due to
> > > the throttling.
> >
> > Good to hear.
> > The concern of this patchset was early OOM kill with too many scanning.
> > I can throw such concern out from now on.
> >
>
> At least, I haven't been able to trigger a premature OOM.
AFAIR, Andrew had a premature OOM problem[1] but I couldn't track down at that time.
I think this patch series might solve his problem. Although it doesn't, it should not accelerate
his problem, at least.
Andrew, Could you test this patchset?
[1] https://lkml.org/lkml/2011/5/25/415
--
Kind regards,
Minchan Kim
WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan.kim@gmail.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>, XFS <xfs@oss.sgi.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@infradead.org>,
Johannes Weiner <jweiner@redhat.com>,
Wu Fengguang <fengguang.wu@intel.com>, Jan Kara <jack@suse.cz>,
Rik van Riel <riel@redhat.com>
Subject: Re: [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2
Date: Fri, 29 Jul 2011 18:48:16 +0900 [thread overview]
Message-ID: <20110729094816.GG1843@barrios-desktop> (raw)
In-Reply-To: <20110728113852.GN3010@suse.de>
On Thu, Jul 28, 2011 at 12:38:52PM +0100, Mel Gorman wrote:
> On Thu, Jul 28, 2011 at 01:18:21AM +0900, Minchan Kim wrote:
> > On Thu, Jul 21, 2011 at 05:28:42PM +0100, Mel Gorman wrote:
> > > Note how preventing kswapd reclaiming dirty pages pushes up its CPU
<snip>
> > > usage as it scans more pages but it does not get excessive due to
> > > the throttling.
> >
> > Good to hear.
> > The concern of this patchset was early OOM kill with too many scanning.
> > I can throw such concern out from now on.
> >
>
> At least, I haven't been able to trigger a premature OOM.
AFAIR, Andrew had a premature OOM problem[1] but I couldn't track down at that time.
I think this patch series might solve his problem. Although it doesn't, it should not accelerate
his problem, at least.
Andrew, Could you test this patchset?
[1] https://lkml.org/lkml/2011/5/25/415
--
Kind regards,
Minchan Kim
--
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next prev parent reply other threads:[~2011-07-29 9:48 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-21 16:28 [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2 Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 1/8] mm: vmscan: Do not writeback filesystem pages in direct reclaim Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-31 15:06 ` Minchan Kim
2011-07-31 15:06 ` Minchan Kim
2011-07-31 15:06 ` Minchan Kim
2011-08-02 11:21 ` Mel Gorman
2011-08-02 11:21 ` Mel Gorman
2011-08-02 11:21 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 2/8] xfs: Warn if direct reclaim tries to writeback pages Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-24 11:32 ` Christoph Hellwig
2011-07-24 11:32 ` Christoph Hellwig
2011-07-24 11:32 ` Christoph Hellwig
2011-07-25 8:19 ` Mel Gorman
2011-07-25 8:19 ` Mel Gorman
2011-07-25 8:19 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 3/8] ext4: " Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-08-03 10:58 ` Johannes Weiner
2011-08-03 10:58 ` Johannes Weiner
2011-08-03 10:58 ` Johannes Weiner
2011-08-03 11:06 ` Johannes Weiner
2011-08-03 11:06 ` Johannes Weiner
2011-08-03 11:06 ` Johannes Weiner
2011-08-03 13:44 ` Mel Gorman
2011-08-03 13:44 ` Mel Gorman
2011-08-03 13:44 ` Mel Gorman
2011-08-03 14:00 ` Johannes Weiner
2011-08-03 14:00 ` Johannes Weiner
2011-08-03 14:00 ` Johannes Weiner
2011-08-03 14:18 ` Christoph Hellwig
2011-08-03 14:18 ` Christoph Hellwig
2011-08-03 14:18 ` Christoph Hellwig
2011-08-03 14:35 ` Mel Gorman
2011-08-03 14:35 ` Mel Gorman
2011-08-03 14:35 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 4/8] btrfs: " Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-08-03 11:10 ` Johannes Weiner
2011-08-03 11:10 ` Johannes Weiner
2011-08-03 11:10 ` Johannes Weiner
2011-08-03 13:45 ` Mel Gorman
2011-08-03 13:45 ` Mel Gorman
2011-08-03 13:45 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 5/8] mm: vmscan: Do not writeback filesystem pages in kswapd except in high priority Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-31 15:11 ` Minchan Kim
2011-07-31 15:11 ` Minchan Kim
2011-07-31 15:11 ` Minchan Kim
2011-07-21 16:28 ` [PATCH 6/8] mm: vmscan: Throttle reclaim if encountering too many dirty pages under writeback Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-31 15:17 ` Minchan Kim
2011-07-31 15:17 ` Minchan Kim
2011-07-31 15:17 ` Minchan Kim
2011-08-03 11:19 ` Johannes Weiner
2011-08-03 11:19 ` Johannes Weiner
2011-08-03 11:19 ` Johannes Weiner
2011-08-03 13:56 ` Mel Gorman
2011-08-03 13:56 ` Mel Gorman
2011-08-03 13:56 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 7/8] mm: vmscan: Immediately reclaim end-of-LRU dirty pages when writeback completes Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-22 12:53 ` Peter Zijlstra
2011-07-22 12:53 ` Peter Zijlstra
2011-07-22 12:53 ` Peter Zijlstra
2011-07-22 13:23 ` Mel Gorman
2011-07-22 13:23 ` Mel Gorman
2011-07-22 13:23 ` Mel Gorman
2011-07-31 15:24 ` Minchan Kim
2011-07-31 15:24 ` Minchan Kim
2011-07-31 15:24 ` Minchan Kim
2011-08-02 11:25 ` Mel Gorman
2011-08-02 11:25 ` Mel Gorman
2011-08-02 11:25 ` Mel Gorman
2011-08-03 11:26 ` Johannes Weiner
2011-08-03 11:26 ` Johannes Weiner
2011-08-03 11:26 ` Johannes Weiner
2011-08-03 13:57 ` Mel Gorman
2011-08-03 13:57 ` Mel Gorman
2011-08-03 13:57 ` Mel Gorman
2011-07-21 16:28 ` [PATCH 8/8] mm: vmscan: Do not writeback filesystem pages from kswapd Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-21 16:28 ` Mel Gorman
2011-07-22 12:57 ` Peter Zijlstra
2011-07-22 12:57 ` Peter Zijlstra
2011-07-22 12:57 ` Peter Zijlstra
2011-07-22 13:31 ` Mel Gorman
2011-07-22 13:31 ` Mel Gorman
2011-07-22 13:31 ` Mel Gorman
2011-08-03 11:37 ` Johannes Weiner
2011-08-03 11:37 ` Johannes Weiner
2011-08-03 11:37 ` Johannes Weiner
2011-08-03 13:58 ` Mel Gorman
2011-08-03 13:58 ` Mel Gorman
2011-08-03 13:58 ` Mel Gorman
2011-07-26 11:20 ` [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2 Dave Chinner
2011-07-26 11:20 ` Dave Chinner
2011-07-26 11:20 ` Dave Chinner
2011-07-27 4:32 ` Minchan Kim
2011-07-27 4:32 ` Minchan Kim
2011-07-27 4:32 ` Minchan Kim
2011-07-27 7:37 ` Mel Gorman
2011-07-27 7:37 ` Mel Gorman
2011-07-27 7:37 ` Mel Gorman
2011-07-27 16:18 ` Minchan Kim
2011-07-27 16:18 ` Minchan Kim
2011-07-27 16:18 ` Minchan Kim
2011-07-28 11:38 ` Mel Gorman
2011-07-28 11:38 ` Mel Gorman
2011-07-28 11:38 ` Mel Gorman
2011-07-29 9:48 ` Minchan Kim [this message]
2011-07-29 9:48 ` Minchan Kim
2011-07-29 9:48 ` Minchan Kim
2011-07-29 9:50 ` Minchan Kim
2011-07-29 9:50 ` Minchan Kim
2011-07-29 9:50 ` Minchan Kim
2011-07-29 13:41 ` Andrew Lutomirski
2011-07-29 13:41 ` Andrew Lutomirski
2011-07-29 13:41 ` Andrew Lutomirski
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