From: Wu Fengguang <fengguang.wu@intel.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jan Kara <jack@suse.cz>, "Li, Shaohua" <shaohua.li@intel.com>,
Christoph Hellwig <hch@lst.de>,
Dave Chinner <david@fromorbit.com>,
"Theodore Ts'o" <tytso@mit.edu>,
Chris Mason <chris.mason@oracle.com>, Mel Gorman <mel@csn.ul.ie>,
Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-mm <linux-mm@kvack.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 06/13] writeback: bdi write bandwidth estimation
Date: Wed, 24 Nov 2010 22:34:59 +0800 [thread overview]
Message-ID: <20101124143459.GA14502@localhost> (raw)
In-Reply-To: <1290607953.2072.472.camel@laptop>
btw, I noticed that the same dd is constantly running from different
CPUs.
It's multi-core CPUs on the same socket, so should not be a big
problem. I'll test NUMA setup later.
This trace is for single dd case.
dd-2893 [005] 3535.182111: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.230125: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.274805: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.289337: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.497863: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.585510: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.622001: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.645003: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.659603: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.669497: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.731294: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.785879: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.827724: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.853108: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.875667: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.895731: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.914920: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.925765: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.935545: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3536.015888: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3536.085571: balance_dirty_pages: bdi=8:0
Here is another run (1-dd):
dd-3014 [001] 1248.388001: balance_dirty_pages: bdi=8:0 bdi_dirty=122640 avg_dirty=122643
dd-3014 [002] 1248.465999: balance_dirty_pages: bdi=8:0 bdi_dirty=122400 avg_dirty=122625
dd-3014 [007] 1248.531451: balance_dirty_pages: bdi=8:0 bdi_dirty=122240 avg_dirty=122600
dd-3014 [007] 1248.599260: balance_dirty_pages: bdi=8:0 bdi_dirty=122000 avg_dirty=122561
dd-3014 [003] 1248.667152: balance_dirty_pages: bdi=8:0 bdi_dirty=120840 avg_dirty=122447
dd-3014 [007] 1248.734848: balance_dirty_pages: bdi=8:0 bdi_dirty=120640 avg_dirty=122328
dd-3014 [007] 1248.798652: balance_dirty_pages: bdi=8:0 bdi_dirty=120440 avg_dirty=122210
dd-3014 [007] 1248.862456: balance_dirty_pages: bdi=8:0 bdi_dirty=120240 avg_dirty=122087
dd-3014 [003] 1248.926280: balance_dirty_pages: bdi=8:0 bdi_dirty=120040 avg_dirty=121960
dd-3014 [005] 1248.986091: balance_dirty_pages: bdi=8:0 bdi_dirty=119760 avg_dirty=121832
dd-3014 [005] 1249.045841: balance_dirty_pages: bdi=8:0 bdi_dirty=119600 avg_dirty=121702
And this 100 dd case looks much better (however it's not always the case):
dd-2775 [007] 454.844907: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=409468930
dd-2775 [007] 455.048108: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=409676055
dd-2775 [007] 455.252347: balance_dirty_pages: bdi=8:0 bdi_dirty=103720 avg_dirty=409676055
dd-2775 [007] 455.455538: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=409676055
dd-2775 [007] 455.658597: balance_dirty_pages: bdi=8:0 bdi_dirty=103880 avg_dirty=409676055
dd-2775 [007] 455.862631: balance_dirty_pages: bdi=8:0 bdi_dirty=103760 avg_dirty=410276387
dd-2775 [007] 456.068149: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=410276387
dd-2775 [007] 456.266729: balance_dirty_pages: bdi=8:0 bdi_dirty=103760 avg_dirty=410833633
dd-2775 [007] 456.470184: balance_dirty_pages: bdi=8:0 bdi_dirty=103840 avg_dirty=410833633
dd-2775 [007] 456.668919: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=410833633
dd-2775 [007] 456.872522: balance_dirty_pages: bdi=8:0 bdi_dirty=103880 avg_dirty=411001977
dd-2775 [007] 457.070753: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=411001977
dd-2775 [007] 457.275970: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=411227747
dd-2775 [007] 457.473736: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=411534633
dd-2775 [007] 457.677204: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=412195106
dd-2775 [007] 457.881156: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=412195106
dd-2775 [007] 458.085173: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=412295260
dd-2775 [007] 458.285146: balance_dirty_pages: bdi=8:0 bdi_dirty=104000 avg_dirty=412295260
dd-2775 [007] 458.490109: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=412789184
dd-2775 [007] 458.692230: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=412789184
Thanks,
Fengguang
WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jan Kara <jack@suse.cz>, "Li, Shaohua" <shaohua.li@intel.com>,
Christoph Hellwig <hch@lst.de>,
Dave Chinner <david@fromorbit.com>, Theodore Ts'o <tytso@mit.edu>,
Chris Mason <chris.mason@oracle.com>, Mel Gorman <mel@csn.ul.ie>,
Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-mm <linux-mm@kvack.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 06/13] writeback: bdi write bandwidth estimation
Date: Wed, 24 Nov 2010 22:34:59 +0800 [thread overview]
Message-ID: <20101124143459.GA14502@localhost> (raw)
In-Reply-To: <1290607953.2072.472.camel@laptop>
btw, I noticed that the same dd is constantly running from different
CPUs.
It's multi-core CPUs on the same socket, so should not be a big
problem. I'll test NUMA setup later.
This trace is for single dd case.
dd-2893 [005] 3535.182111: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.230125: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.274805: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.289337: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.497863: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.585510: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.622001: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.645003: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.659603: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.669497: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.731294: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.785879: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.827724: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.853108: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3535.875667: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.895731: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.914920: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.925765: balance_dirty_pages: bdi=8:0
dd-2893 [005] 3535.935545: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3536.015888: balance_dirty_pages: bdi=8:0
dd-2893 [001] 3536.085571: balance_dirty_pages: bdi=8:0
Here is another run (1-dd):
dd-3014 [001] 1248.388001: balance_dirty_pages: bdi=8:0 bdi_dirty=122640 avg_dirty=122643
dd-3014 [002] 1248.465999: balance_dirty_pages: bdi=8:0 bdi_dirty=122400 avg_dirty=122625
dd-3014 [007] 1248.531451: balance_dirty_pages: bdi=8:0 bdi_dirty=122240 avg_dirty=122600
dd-3014 [007] 1248.599260: balance_dirty_pages: bdi=8:0 bdi_dirty=122000 avg_dirty=122561
dd-3014 [003] 1248.667152: balance_dirty_pages: bdi=8:0 bdi_dirty=120840 avg_dirty=122447
dd-3014 [007] 1248.734848: balance_dirty_pages: bdi=8:0 bdi_dirty=120640 avg_dirty=122328
dd-3014 [007] 1248.798652: balance_dirty_pages: bdi=8:0 bdi_dirty=120440 avg_dirty=122210
dd-3014 [007] 1248.862456: balance_dirty_pages: bdi=8:0 bdi_dirty=120240 avg_dirty=122087
dd-3014 [003] 1248.926280: balance_dirty_pages: bdi=8:0 bdi_dirty=120040 avg_dirty=121960
dd-3014 [005] 1248.986091: balance_dirty_pages: bdi=8:0 bdi_dirty=119760 avg_dirty=121832
dd-3014 [005] 1249.045841: balance_dirty_pages: bdi=8:0 bdi_dirty=119600 avg_dirty=121702
And this 100 dd case looks much better (however it's not always the case):
dd-2775 [007] 454.844907: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=409468930
dd-2775 [007] 455.048108: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=409676055
dd-2775 [007] 455.252347: balance_dirty_pages: bdi=8:0 bdi_dirty=103720 avg_dirty=409676055
dd-2775 [007] 455.455538: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=409676055
dd-2775 [007] 455.658597: balance_dirty_pages: bdi=8:0 bdi_dirty=103880 avg_dirty=409676055
dd-2775 [007] 455.862631: balance_dirty_pages: bdi=8:0 bdi_dirty=103760 avg_dirty=410276387
dd-2775 [007] 456.068149: balance_dirty_pages: bdi=8:0 bdi_dirty=103800 avg_dirty=410276387
dd-2775 [007] 456.266729: balance_dirty_pages: bdi=8:0 bdi_dirty=103760 avg_dirty=410833633
dd-2775 [007] 456.470184: balance_dirty_pages: bdi=8:0 bdi_dirty=103840 avg_dirty=410833633
dd-2775 [007] 456.668919: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=410833633
dd-2775 [007] 456.872522: balance_dirty_pages: bdi=8:0 bdi_dirty=103880 avg_dirty=411001977
dd-2775 [007] 457.070753: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=411001977
dd-2775 [007] 457.275970: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=411227747
dd-2775 [007] 457.473736: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=411534633
dd-2775 [007] 457.677204: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=412195106
dd-2775 [007] 457.881156: balance_dirty_pages: bdi=8:0 bdi_dirty=104040 avg_dirty=412195106
dd-2775 [007] 458.085173: balance_dirty_pages: bdi=8:0 bdi_dirty=103920 avg_dirty=412295260
dd-2775 [007] 458.285146: balance_dirty_pages: bdi=8:0 bdi_dirty=104000 avg_dirty=412295260
dd-2775 [007] 458.490109: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=412789184
dd-2775 [007] 458.692230: balance_dirty_pages: bdi=8:0 bdi_dirty=103960 avg_dirty=412789184
Thanks,
Fengguang
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next prev parent reply other threads:[~2010-11-24 14:35 UTC|newest]
Thread overview: 162+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-17 4:27 [PATCH 00/13] IO-less dirty throttling v2 Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 01/13] writeback: IO-less balance_dirty_pages() Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 10:34 ` Minchan Kim
2010-11-17 10:34 ` Minchan Kim
2010-11-22 2:01 ` Wu Fengguang
2010-11-22 2:01 ` Wu Fengguang
2010-11-22 2:01 ` Wu Fengguang
2010-11-17 23:08 ` Andrew Morton
2010-11-17 23:08 ` Andrew Morton
2010-11-17 23:08 ` Andrew Morton
2010-11-18 13:04 ` Peter Zijlstra
2010-11-18 13:04 ` Peter Zijlstra
2010-11-18 13:26 ` Wu Fengguang
2010-11-18 13:26 ` Wu Fengguang
2010-11-18 13:40 ` Peter Zijlstra
2010-11-18 13:40 ` Peter Zijlstra
2010-11-18 14:02 ` Wu Fengguang
2010-11-18 14:02 ` Wu Fengguang
[not found] ` <20101129151719.GA30590@localhost>
[not found] ` <1291064013.32004.393.camel@laptop>
[not found] ` <20101130043735.GA22947@localhost>
[not found] ` <1291156522.32004.1359.camel@laptop>
[not found] ` <1291156765.32004.1365.camel@laptop>
[not found] ` <20101201133818.GA13377@localhost>
2010-12-01 23:03 ` Andrew Morton
2010-12-01 23:03 ` Andrew Morton
2010-12-02 1:56 ` Wu Fengguang
2010-12-02 1:56 ` Wu Fengguang
2010-12-05 16:14 ` Wu Fengguang
2010-12-06 2:42 ` Ted Ts'o
2010-12-06 2:42 ` Ted Ts'o
2010-12-06 9:52 ` Dmitry
2010-12-06 9:52 ` Dmitry
2010-12-06 9:52 ` Dmitry
2010-12-06 12:34 ` Ted Ts'o
2010-12-06 12:34 ` Ted Ts'o
2010-11-17 4:27 ` [PATCH 02/13] writeback: consolidate variable names in balance_dirty_pages() Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 03/13] writeback: per-task rate limit on balance_dirty_pages() Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 14:39 ` Wu Fengguang
2010-11-17 14:39 ` Wu Fengguang
2010-11-24 10:23 ` Peter Zijlstra
2010-11-24 10:23 ` Peter Zijlstra
2010-11-24 10:43 ` Wu Fengguang
2010-11-24 10:43 ` Wu Fengguang
2010-11-24 10:49 ` Peter Zijlstra
2010-11-24 10:49 ` Peter Zijlstra
2010-11-17 4:27 ` [PATCH 04/13] writeback: prevent duplicate balance_dirty_pages_ratelimited() calls Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 05/13] writeback: account per-bdi accumulated written pages Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-24 10:26 ` Peter Zijlstra
2010-11-24 10:26 ` Peter Zijlstra
2010-11-24 10:44 ` Wu Fengguang
2010-11-24 10:44 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 06/13] writeback: bdi write bandwidth estimation Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 23:08 ` Andrew Morton
2010-11-17 23:08 ` Andrew Morton
2010-11-17 23:08 ` Andrew Morton
2010-11-17 23:24 ` Peter Zijlstra
2010-11-17 23:24 ` Peter Zijlstra
2010-11-17 23:38 ` Andrew Morton
2010-11-17 23:38 ` Andrew Morton
2010-11-17 23:43 ` Peter Zijlstra
2010-11-17 23:43 ` Peter Zijlstra
2010-11-18 6:51 ` Wu Fengguang
2010-11-18 6:51 ` Wu Fengguang
2010-11-24 10:58 ` Peter Zijlstra
2010-11-24 10:58 ` Peter Zijlstra
2010-11-24 14:06 ` Wu Fengguang
2010-11-24 14:06 ` Wu Fengguang
2010-11-24 11:05 ` Peter Zijlstra
2010-11-24 11:05 ` Peter Zijlstra
2010-11-24 12:10 ` Wu Fengguang
2010-11-24 12:10 ` Wu Fengguang
2010-11-24 12:50 ` Peter Zijlstra
2010-11-24 12:50 ` Peter Zijlstra
2010-11-24 13:14 ` Wu Fengguang
2010-11-24 13:14 ` Wu Fengguang
2010-11-24 13:20 ` Wu Fengguang
2010-11-24 13:20 ` Wu Fengguang
2010-11-24 13:42 ` Peter Zijlstra
2010-11-24 13:42 ` Peter Zijlstra
2010-11-24 13:46 ` Wu Fengguang
2010-11-24 13:46 ` Wu Fengguang
2010-11-24 14:12 ` Peter Zijlstra
2010-11-24 14:12 ` Peter Zijlstra
2010-11-24 14:21 ` Wu Fengguang
2010-11-24 14:21 ` Wu Fengguang
2010-11-24 14:31 ` Peter Zijlstra
2010-11-24 14:31 ` Peter Zijlstra
2010-11-24 14:38 ` Wu Fengguang
2010-11-24 14:38 ` Wu Fengguang
2010-11-24 14:34 ` Wu Fengguang [this message]
2010-11-24 14:34 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 07/13] writeback: show bdi write bandwidth in debugfs Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 08/13] writeback: quit throttling when bdi dirty pages dropped low Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-24 11:13 ` Peter Zijlstra
2010-11-24 11:13 ` Peter Zijlstra
2010-11-24 12:30 ` Wu Fengguang
2010-11-24 12:30 ` Wu Fengguang
2010-11-24 12:46 ` Peter Zijlstra
2010-11-24 12:46 ` Peter Zijlstra
2010-11-24 12:59 ` Wu Fengguang
2010-11-24 12:59 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 09/13] writeback: reduce per-bdi dirty threshold ramp up time Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-24 11:15 ` Peter Zijlstra
2010-11-24 11:15 ` Peter Zijlstra
2010-11-24 12:39 ` Wu Fengguang
2010-11-24 12:39 ` Wu Fengguang
2010-11-24 12:56 ` Peter Zijlstra
2010-11-24 12:56 ` Peter Zijlstra
2010-11-17 4:27 ` [PATCH 10/13] writeback: make reasonable gap between the dirty/background thresholds Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-24 11:18 ` Peter Zijlstra
2010-11-24 11:18 ` Peter Zijlstra
2010-11-24 12:48 ` Wu Fengguang
2010-11-24 12:48 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 11/13] writeback: scale down max throttle bandwidth on concurrent dirtiers Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 12/13] writeback: add trace event for balance_dirty_pages() Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:41 ` Wu Fengguang
2010-11-17 4:41 ` Wu Fengguang
2010-11-17 4:27 ` [PATCH 13/13] writeback: make nr_to_write a per-file limit Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 4:27 ` Wu Fengguang
2010-11-17 23:03 ` [PATCH 00/13] IO-less dirty throttling v2 Andrew Morton
2010-11-17 23:03 ` Andrew Morton
2010-11-17 23:03 ` Andrew Morton
2010-11-18 2:06 ` Dave Chinner
2010-11-18 2:06 ` Dave Chinner
2010-11-18 2:09 ` Andrew Morton
2010-11-18 2:09 ` Andrew Morton
2010-11-18 3:21 ` Dave Chinner
2010-11-18 3:21 ` Dave Chinner
2010-11-18 3:34 ` Andrew Morton
2010-11-18 3:34 ` Andrew Morton
2010-11-18 7:27 ` Dave Chinner
2010-11-18 7:27 ` Dave Chinner
2010-11-18 7:33 ` Andrew Morton
2010-11-18 7:33 ` Andrew Morton
2010-11-19 3:11 ` Dave Chinner
2010-11-19 3:11 ` Dave Chinner
2010-11-24 11:12 ` Avi Kivity
2010-11-24 11:12 ` Avi Kivity
-- strict thread matches above, loose matches on Subject: below --
2010-11-17 3:58 [PATCH 06/13] writeback: bdi write bandwidth estimation Wu Fengguang
2010-11-17 3:58 ` Wu Fengguang
2010-11-17 3:58 ` Wu Fengguang
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