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From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>, Mel Gorman <mel@linux.vnet.ibm.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Itaru Kitayama <kitayama@cl.bb4u.ne.jp>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
	<linux-fsdevel@vger.kernel.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/6] writeback: moving expire targets for background/kupdate works v2
Date: Wed, 20 Apr 2011 16:03:36 +0800	[thread overview]
Message-ID: <20110420080336.441157866@intel.com> (raw)

Andrew,

This aims to reduce possible pageout() calls by making the flusher
concentrate a bit more on old/expired dirty inodes.

Rationals and benchmark numbers are added in patches 05, 06.

It runs fine on simple workloads over ext3/4, xfs, btrfs and NFS.

code refactor
	[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

loop condition fixes
	[PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned
	[PATCH 3/6] writeback: try more writeback as long as something was written

make dirty expire time a moving target
	[PATCH 4/6] writeback: the kupdate expire timestamp should be a moving target
	[PATCH 5/6] writeback: sync expired inodes first in background writeback

consistent requeue policy
it's not an integral part of this patchset, however do depends on patch 03
	[PATCH 6/6] writeback: refill b_io iff empty


Thanks,
Fengguang


WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>, Mel Gorman <mel@linux.vnet.ibm.com>,
	Dave Chinner <david@fromorbit.com>,
	Itaru Kitayama <kitayama@cl.bb4u.ne.jp>,
	Minchan Kim <minchan.kim@gmail.com>,
	Linux Memory Management List <linux-mm@kvack.org>,
	linux-fsdevel@vger.kernel.org,
	Wu Fengguang <fengguang.wu@intel.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/6] writeback: moving expire targets for background/kupdate works v2
Date: Wed, 20 Apr 2011 16:03:36 +0800	[thread overview]
Message-ID: <20110420080336.441157866@intel.com> (raw)

Andrew,

This aims to reduce possible pageout() calls by making the flusher
concentrate a bit more on old/expired dirty inodes.

Rationals and benchmark numbers are added in patches 05, 06.

It runs fine on simple workloads over ext3/4, xfs, btrfs and NFS.

code refactor
	[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

loop condition fixes
	[PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned
	[PATCH 3/6] writeback: try more writeback as long as something was written

make dirty expire time a moving target
	[PATCH 4/6] writeback: the kupdate expire timestamp should be a moving target
	[PATCH 5/6] writeback: sync expired inodes first in background writeback

consistent requeue policy
it's not an integral part of this patchset, however do depends on patch 03
	[PATCH 6/6] writeback: refill b_io iff empty


Thanks,
Fengguang

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             reply	other threads:[~2011-04-20  8:46 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-20  8:03 Wu Fengguang [this message]
2011-04-20  8:03 ` [PATCH 0/6] writeback: moving expire targets for background/kupdate works v2 Wu Fengguang
2011-04-20  8:03 ` [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes() Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-05-04 11:04   ` Christoph Hellwig
2011-05-04 11:04     ` Christoph Hellwig
2011-05-04 11:13     ` Wu Fengguang
2011-05-04 11:13       ` Wu Fengguang
2011-04-20  8:03 ` [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-05-04 11:05   ` Christoph Hellwig
2011-05-04 11:05     ` Christoph Hellwig
2011-05-04 11:11     ` Wu Fengguang
2011-05-04 11:11       ` Wu Fengguang
2011-05-04 11:16       ` Christoph Hellwig
2011-05-04 11:16         ` Christoph Hellwig
2011-05-04 11:32         ` Wu Fengguang
2011-05-04 11:32           ` Wu Fengguang
2011-04-20  8:03 ` [PATCH 3/6] writeback: try more writeback as long as something was written Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03 ` [PATCH 4/6] writeback: the kupdate expire timestamp should be a moving target Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03 ` [PATCH 5/6] writeback: sync expired inodes first in background writeback Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20 23:40   ` Andrew Morton
2011-04-20 23:40     ` Andrew Morton
2011-04-20 23:40     ` Andrew Morton
2011-04-21  1:14     ` Wu Fengguang
2011-04-21  1:14       ` Wu Fengguang
2011-04-21  1:21       ` Wu Fengguang
2011-04-21  1:21         ` Wu Fengguang
2011-04-24  3:15     ` Wu Fengguang
2011-04-24  3:15       ` Wu Fengguang
2011-04-26 12:17       ` Jan Kara
2011-04-26 12:17         ` Jan Kara
2011-04-26 13:51         ` Wu Fengguang
2011-04-26 13:51           ` Wu Fengguang
2011-04-26 13:59           ` Wu Fengguang
2011-04-26 13:59             ` Wu Fengguang
2011-04-26 14:05           ` Wu Fengguang
2011-04-26 14:05             ` Wu Fengguang
2011-04-27 11:15           ` Wu Fengguang
2011-04-27 11:15             ` Wu Fengguang
2011-04-20  8:03 ` [PATCH 6/6] writeback: refill b_io iff empty Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-04-20  8:03   ` Wu Fengguang
2011-05-04  7:39   ` Wu Fengguang
2011-05-05 16:37     ` Jan Kara
2011-05-05 16:37       ` Jan Kara
2011-05-05 16:47       ` Wu Fengguang
2011-05-05 16:47         ` Wu Fengguang
2011-05-06  5:29       ` Wu Fengguang
2011-05-06  5:29         ` Wu Fengguang
2011-05-06  8:42         ` [RFC][PATCH] writeback: limit number of moved inodes in queue_io() Wu Fengguang
2011-05-06  8:42           ` Wu Fengguang
2011-05-06 10:06           ` [RFC][PATCH v2] " Wu Fengguang
2011-05-06 10:06             ` Wu Fengguang
2011-05-06 23:06             ` Dave Chinner
2011-05-06 23:06               ` Dave Chinner
2011-05-06 14:21         ` [PATCH 6/6] writeback: refill b_io iff empty Jan Kara
2011-05-06 14:21           ` Jan Kara
2011-05-10  4:31           ` Wu Fengguang
2011-05-10  4:53             ` Dave Chinner
2011-05-10  4:53               ` Dave Chinner

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