From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
Chris Mason <chris.mason@oracle.com>,
Nick Piggin <npiggin@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
Christoph Hellwig <hch@infradead.org>,
Wu Fengguang <fengguang.wu@intel.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages
Date: Mon, 19 Jul 2010 14:59:36 -0400 [thread overview]
Message-ID: <4C44A098.1010806@redhat.com> (raw)
In-Reply-To: <1279545090-19169-9-git-send-email-mel@csn.ul.ie>
On 07/19/2010 09:11 AM, Mel Gorman wrote:
> There are a number of cases where pages get cleaned but two of concern
> to this patch are;
> o When dirtying pages, processes may be throttled to clean pages if
> dirty_ratio is not met.
> o Pages belonging to inodes dirtied longer than
> dirty_writeback_centisecs get cleaned.
>
> The problem for reclaim is that dirty pages can reach the end of the LRU
> if pages are being dirtied slowly so that neither the throttling cleans
> them or a flusher thread waking periodically.
I can't see a better way to do this without creating
a way-too-big-to-merge patch series, and this patch
should result in the right behaviour, so ...
Acked-by: Rik van Riel <riel@redhat.com>
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
Chris Mason <chris.mason@oracle.com>,
Nick Piggin <npiggin@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
Christoph Hellwig <hch@infradead.org>,
Wu Fengguang <fengguang.wu@intel.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages
Date: Mon, 19 Jul 2010 14:59:36 -0400 [thread overview]
Message-ID: <4C44A098.1010806@redhat.com> (raw)
In-Reply-To: <1279545090-19169-9-git-send-email-mel@csn.ul.ie>
On 07/19/2010 09:11 AM, Mel Gorman wrote:
> There are a number of cases where pages get cleaned but two of concern
> to this patch are;
> o When dirtying pages, processes may be throttled to clean pages if
> dirty_ratio is not met.
> o Pages belonging to inodes dirtied longer than
> dirty_writeback_centisecs get cleaned.
>
> The problem for reclaim is that dirty pages can reach the end of the LRU
> if pages are being dirtied slowly so that neither the throttling cleans
> them or a flusher thread waking periodically.
I can't see a better way to do this without creating
a way-too-big-to-merge patch series, and this patch
should result in the right behaviour, so ...
Acked-by: Rik van Riel <riel@redhat.com>
--
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/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-07-19 19:00 UTC|newest]
Thread overview: 177+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-19 13:11 [PATCH 0/8] Reduce writeback from page reclaim context V4 Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 13:11 ` [PATCH 1/8] vmscan: tracing: Roll up of patches currently in mmotm Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 13:11 ` [PATCH 2/8] vmscan: tracing: Update trace event to track if page reclaim IO is for anon or file pages Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 13:24 ` Rik van Riel
2010-07-19 13:24 ` Rik van Riel
2010-07-19 14:15 ` Christoph Hellwig
2010-07-19 14:15 ` Christoph Hellwig
2010-07-19 14:24 ` Mel Gorman
2010-07-19 14:24 ` Mel Gorman
2010-07-19 14:26 ` Christoph Hellwig
2010-07-19 14:26 ` Christoph Hellwig
2010-07-19 13:11 ` [PATCH 3/8] vmscan: tracing: Update post-processing script to distinguish between anon and file IO from page reclaim Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 13:32 ` Rik van Riel
2010-07-19 13:32 ` Rik van Riel
2010-07-19 13:11 ` [PATCH 4/8] vmscan: Do not writeback filesystem pages in direct reclaim Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 14:19 ` Christoph Hellwig
2010-07-19 14:19 ` Christoph Hellwig
2010-07-19 14:26 ` Mel Gorman
2010-07-19 14:26 ` Mel Gorman
2010-07-19 18:25 ` Rik van Riel
2010-07-19 18:25 ` Rik van Riel
2010-07-19 22:14 ` Johannes Weiner
2010-07-19 22:14 ` Johannes Weiner
2010-07-20 13:45 ` Mel Gorman
2010-07-20 13:45 ` Mel Gorman
2010-07-20 22:02 ` Johannes Weiner
2010-07-20 22:02 ` Johannes Weiner
2010-07-21 11:36 ` Johannes Weiner
2010-07-21 11:36 ` Johannes Weiner
2010-07-21 11:52 ` Mel Gorman
2010-07-21 11:52 ` Mel Gorman
2010-07-21 12:01 ` KAMEZAWA Hiroyuki
2010-07-21 12:01 ` KAMEZAWA Hiroyuki
2010-07-21 14:27 ` Mel Gorman
2010-07-21 14:27 ` Mel Gorman
2010-07-21 23:57 ` KAMEZAWA Hiroyuki
2010-07-21 23:57 ` KAMEZAWA Hiroyuki
2010-07-22 9:19 ` Mel Gorman
2010-07-22 9:19 ` Mel Gorman
2010-07-22 9:22 ` KAMEZAWA Hiroyuki
2010-07-22 9:22 ` KAMEZAWA Hiroyuki
2010-07-21 13:04 ` Johannes Weiner
2010-07-21 13:04 ` Johannes Weiner
2010-07-21 13:38 ` Mel Gorman
2010-07-21 13:38 ` Mel Gorman
2010-07-21 14:28 ` Johannes Weiner
2010-07-21 14:28 ` Johannes Weiner
2010-07-21 14:31 ` Mel Gorman
2010-07-21 14:31 ` Mel Gorman
2010-07-21 14:39 ` Johannes Weiner
2010-07-21 14:39 ` Johannes Weiner
2010-07-21 15:06 ` Mel Gorman
2010-07-21 15:06 ` Mel Gorman
2010-07-26 8:29 ` Wu Fengguang
2010-07-26 8:29 ` Wu Fengguang
2010-07-26 9:12 ` Mel Gorman
2010-07-26 9:12 ` Mel Gorman
2010-07-26 11:19 ` Wu Fengguang
2010-07-26 11:19 ` Wu Fengguang
2010-07-26 12:53 ` Mel Gorman
2010-07-26 12:53 ` Mel Gorman
2010-07-26 13:03 ` Wu Fengguang
2010-07-26 13:03 ` Wu Fengguang
2010-07-19 13:11 ` [PATCH 5/8] fs,btrfs: Allow kswapd to writeback pages Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 18:27 ` Rik van Riel
2010-07-19 18:27 ` Rik van Riel
2010-07-19 13:11 ` [PATCH 6/8] fs,xfs: " Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 14:20 ` Christoph Hellwig
2010-07-19 14:20 ` Christoph Hellwig
2010-07-19 14:43 ` Mel Gorman
2010-07-19 14:43 ` Mel Gorman
2010-07-19 13:11 ` [PATCH 7/8] writeback: sync old inodes first in background writeback Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 14:21 ` Christoph Hellwig
2010-07-19 14:21 ` Christoph Hellwig
2010-07-19 14:40 ` Mel Gorman
2010-07-19 14:40 ` Mel Gorman
2010-07-19 14:48 ` Christoph Hellwig
2010-07-19 14:48 ` Christoph Hellwig
2010-07-22 8:52 ` Wu Fengguang
2010-07-22 8:52 ` Wu Fengguang
2010-07-22 9:02 ` Wu Fengguang
2010-07-22 9:02 ` Wu Fengguang
2010-07-22 9:21 ` Wu Fengguang
2010-07-22 9:21 ` Wu Fengguang
2010-07-22 10:48 ` Mel Gorman
2010-07-22 10:48 ` Mel Gorman
2010-07-23 9:45 ` Wu Fengguang
2010-07-23 9:45 ` Wu Fengguang
2010-07-23 10:57 ` Mel Gorman
2010-07-23 10:57 ` Mel Gorman
2010-07-23 11:49 ` Wu Fengguang
2010-07-23 11:49 ` Wu Fengguang
2010-07-23 12:20 ` Wu Fengguang
2010-07-23 12:20 ` Wu Fengguang
2010-07-25 10:43 ` KOSAKI Motohiro
2010-07-25 10:43 ` KOSAKI Motohiro
2010-07-25 12:03 ` Minchan Kim
2010-07-25 12:03 ` Minchan Kim
2010-07-26 3:27 ` Wu Fengguang
2010-07-26 3:27 ` Wu Fengguang
2010-07-26 4:11 ` Minchan Kim
2010-07-26 4:11 ` Minchan Kim
2010-07-26 4:37 ` Wu Fengguang
2010-07-26 4:37 ` Wu Fengguang
2010-07-26 4:37 ` Wu Fengguang
2010-07-26 16:30 ` Minchan Kim
2010-07-26 16:30 ` Minchan Kim
2010-07-26 16:30 ` Minchan Kim
2010-07-26 22:48 ` Wu Fengguang
2010-07-26 22:48 ` Wu Fengguang
2010-07-26 22:48 ` Wu Fengguang
2010-07-26 3:08 ` Wu Fengguang
2010-07-26 3:08 ` Wu Fengguang
2010-07-26 3:11 ` Rik van Riel
2010-07-26 3:11 ` Rik van Riel
2010-07-26 3:17 ` Wu Fengguang
2010-07-26 3:17 ` Wu Fengguang
2010-07-22 15:34 ` Minchan Kim
2010-07-22 15:34 ` Minchan Kim
2010-07-23 11:59 ` Wu Fengguang
2010-07-23 11:59 ` Wu Fengguang
2010-07-22 9:42 ` Mel Gorman
2010-07-22 9:42 ` Mel Gorman
2010-07-23 8:33 ` Wu Fengguang
2010-07-23 8:33 ` Wu Fengguang
2010-07-22 1:13 ` Wu Fengguang
2010-07-22 1:13 ` Wu Fengguang
2010-07-19 18:43 ` Rik van Riel
2010-07-19 18:43 ` Rik van Riel
2010-07-19 13:11 ` [PATCH 8/8] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages Mel Gorman
2010-07-19 13:11 ` Mel Gorman
2010-07-19 14:23 ` Christoph Hellwig
2010-07-19 14:23 ` Christoph Hellwig
2010-07-19 14:37 ` Mel Gorman
2010-07-19 14:37 ` Mel Gorman
2010-07-19 22:48 ` Johannes Weiner
2010-07-19 22:48 ` Johannes Weiner
2010-07-20 14:10 ` Mel Gorman
2010-07-20 14:10 ` Mel Gorman
2010-07-20 22:05 ` Johannes Weiner
2010-07-20 22:05 ` Johannes Weiner
2010-07-19 18:59 ` Rik van Riel [this message]
2010-07-19 18:59 ` Rik van Riel
2010-07-19 22:26 ` Johannes Weiner
2010-07-19 22:26 ` Johannes Weiner
2010-07-26 7:28 ` Wu Fengguang
2010-07-26 7:28 ` Wu Fengguang
2010-07-26 9:26 ` Mel Gorman
2010-07-26 9:26 ` Mel Gorman
2010-07-26 11:27 ` Wu Fengguang
2010-07-26 11:27 ` Wu Fengguang
2010-07-26 12:57 ` Mel Gorman
2010-07-26 12:57 ` Mel Gorman
2010-07-26 13:10 ` Wu Fengguang
2010-07-26 13:10 ` Wu Fengguang
2010-07-27 13:35 ` Mel Gorman
2010-07-27 13:35 ` Mel Gorman
2010-07-27 14:24 ` Wu Fengguang
2010-07-27 14:24 ` Wu Fengguang
2010-07-27 14:34 ` Wu Fengguang
2010-07-27 14:34 ` Wu Fengguang
2010-07-27 14:40 ` Mel Gorman
2010-07-27 14:40 ` Mel Gorman
2010-07-27 14:55 ` Wu Fengguang
2010-07-27 14:55 ` Wu Fengguang
2010-07-27 14:38 ` Mel Gorman
2010-07-27 14:38 ` Mel Gorman
2010-07-27 15:21 ` Wu Fengguang
2010-07-27 15:21 ` Wu Fengguang
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=4C44A098.1010806@redhat.com \
--to=riel@redhat.com \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=chris.mason@oracle.com \
--cc=david@fromorbit.com \
--cc=fengguang.wu@intel.com \
--cc=hannes@cmpxchg.org \
--cc=hch@infradead.org \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mel@csn.ul.ie \
--cc=npiggin@suse.de \
/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.