From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Minchan Kim <minchan.kim@gmail.com>,
Dave Jones <davej@redhat.com>, Jan Kara <jack@suse.cz>,
Andy Isaacson <adi@hexapodia.org>,
Johannes Weiner <jweiner@redhat.com>, Nai Xia <nai.xia@gmail.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 07/11] mm: page allocator: Do not call direct reclaim for THP allocations while compaction is deferred
Date: Thu, 15 Dec 2011 23:10:20 -0500 [thread overview]
Message-ID: <4EEAC4AC.90600@redhat.com> (raw)
In-Reply-To: <1323877293-15401-8-git-send-email-mgorman@suse.de>
On 12/14/2011 10:41 AM, Mel Gorman wrote:
> If compaction is deferred, direct reclaim is used to try free enough
> pages for the allocation to succeed. For small high-orders, this has
> a reasonable chance of success. However, if the caller has specified
> __GFP_NO_KSWAPD to limit the disruption to the system, it makes more
> sense to fail the allocation rather than stall the caller in direct
> reclaim. This patch skips direct reclaim if compaction is deferred
> and the caller specifies __GFP_NO_KSWAPD.
>
> Async compaction only considers a subset of pages so it is possible for
> compaction to be deferred prematurely and not enter direct reclaim even
> in cases where it should. To compensate for this, this patch also defers
> compaction only if sync compaction failed.
>
> Signed-off-by: Mel Gorman<mgorman@suse.de>
> Acked-by: Minchan Kim<minchan.kim@gmail.com>
Reviewed-by: Rik van Riel<riel@redhat.com>
--
All rights reversed
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Minchan Kim <minchan.kim@gmail.com>,
Dave Jones <davej@redhat.com>, Jan Kara <jack@suse.cz>,
Andy Isaacson <adi@hexapodia.org>,
Johannes Weiner <jweiner@redhat.com>, Nai Xia <nai.xia@gmail.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 07/11] mm: page allocator: Do not call direct reclaim for THP allocations while compaction is deferred
Date: Thu, 15 Dec 2011 23:10:20 -0500 [thread overview]
Message-ID: <4EEAC4AC.90600@redhat.com> (raw)
In-Reply-To: <1323877293-15401-8-git-send-email-mgorman@suse.de>
On 12/14/2011 10:41 AM, Mel Gorman wrote:
> If compaction is deferred, direct reclaim is used to try free enough
> pages for the allocation to succeed. For small high-orders, this has
> a reasonable chance of success. However, if the caller has specified
> __GFP_NO_KSWAPD to limit the disruption to the system, it makes more
> sense to fail the allocation rather than stall the caller in direct
> reclaim. This patch skips direct reclaim if compaction is deferred
> and the caller specifies __GFP_NO_KSWAPD.
>
> Async compaction only considers a subset of pages so it is possible for
> compaction to be deferred prematurely and not enter direct reclaim even
> in cases where it should. To compensate for this, this patch also defers
> compaction only if sync compaction failed.
>
> Signed-off-by: Mel Gorman<mgorman@suse.de>
> Acked-by: Minchan Kim<minchan.kim@gmail.com>
Reviewed-by: Rik van Riel<riel@redhat.com>
--
All rights reversed
--
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/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-12-16 4:10 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-14 15:41 [PATCH 0/11] Reduce compaction-related stalls and improve asynchronous migration of dirty pages v6 Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-14 15:41 ` [PATCH 01/11] mm: compaction: Allow compaction to isolate dirty pages Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-14 15:41 ` [PATCH 02/11] mm: compaction: Use synchronous compaction for /proc/sys/vm/compact_memory Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-14 15:41 ` [PATCH 03/11] mm: vmscan: Check if we isolated a compound page during lumpy scan Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-15 23:21 ` Rik van Riel
2011-12-15 23:21 ` Rik van Riel
2011-12-14 15:41 ` [PATCH 04/11] mm: vmscan: Do not OOM if aborting reclaim to start compaction Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-15 23:36 ` Rik van Riel
2011-12-15 23:36 ` Rik van Riel
2011-12-14 15:41 ` [PATCH 05/11] mm: compaction: Determine if dirty pages can be migrated without blocking within ->migratepage Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 3:32 ` Rik van Riel
2011-12-16 3:32 ` Rik van Riel
2011-12-16 23:20 ` Andrew Morton
2011-12-16 23:20 ` Andrew Morton
2011-12-17 3:03 ` Nai Xia
2011-12-17 3:03 ` Nai Xia
2011-12-17 3:26 ` Andrew Morton
2011-12-17 3:26 ` Andrew Morton
2011-12-19 11:05 ` Mel Gorman
2011-12-19 11:05 ` Mel Gorman
2011-12-19 13:12 ` nai.xia
2011-12-19 13:12 ` nai.xia
2011-12-14 15:41 ` [PATCH 06/11] mm: compaction: make isolate_lru_page() filter-aware again Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 3:34 ` Rik van Riel
2011-12-16 3:34 ` Rik van Riel
2011-12-18 1:53 ` Minchan Kim
2011-12-18 1:53 ` Minchan Kim
2011-12-14 15:41 ` [PATCH 07/11] mm: page allocator: Do not call direct reclaim for THP allocations while compaction is deferred Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 4:10 ` Rik van Riel [this message]
2011-12-16 4:10 ` Rik van Riel
2011-12-14 15:41 ` [PATCH 08/11] mm: compaction: Introduce sync-light migration for use by compaction Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 4:31 ` Rik van Riel
2011-12-16 4:31 ` Rik van Riel
2011-12-18 2:05 ` Minchan Kim
2011-12-18 2:05 ` Minchan Kim
2011-12-19 11:45 ` Mel Gorman
2011-12-19 11:45 ` Mel Gorman
2011-12-20 7:18 ` Minchan Kim
2011-12-20 7:18 ` Minchan Kim
2012-01-13 21:25 ` Andrew Morton
2012-01-13 21:25 ` Andrew Morton
2012-01-16 11:33 ` Mel Gorman
2012-01-16 11:33 ` Mel Gorman
2011-12-14 15:41 ` [PATCH 09/11] mm: vmscan: When reclaiming for compaction, ensure there are sufficient free pages available Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 4:35 ` Rik van Riel
2011-12-16 4:35 ` Rik van Riel
2011-12-14 15:41 ` [PATCH 10/11] mm: vmscan: Check if reclaim should really abort even if compaction_ready() is true for one zone Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 4:38 ` Rik van Riel
2011-12-16 4:38 ` Rik van Riel
2011-12-16 11:29 ` Mel Gorman
2011-12-16 11:29 ` Mel Gorman
2011-12-14 15:41 ` [PATCH 11/11] mm: Isolate pages for immediate reclaim on their own LRU Mel Gorman
2011-12-14 15:41 ` Mel Gorman
2011-12-16 4:47 ` Rik van Riel
2011-12-16 4:47 ` Rik van Riel
2011-12-16 12:26 ` Mel Gorman
2011-12-16 12:26 ` Mel Gorman
2011-12-16 15:17 ` Johannes Weiner
2011-12-16 15:17 ` Johannes Weiner
2011-12-16 16:07 ` Mel Gorman
2011-12-16 16:07 ` Mel Gorman
2011-12-19 16:14 ` Johannes Weiner
2011-12-19 16:14 ` Johannes Weiner
2011-12-17 16:08 ` Minchan Kim
2011-12-17 16:08 ` Minchan Kim
2011-12-19 13:26 ` Mel Gorman
2011-12-19 13:26 ` Mel Gorman
2011-12-20 7:10 ` Minchan Kim
2011-12-20 7:10 ` Minchan Kim
2011-12-20 9:55 ` Mel Gorman
2011-12-20 9:55 ` Mel Gorman
2011-12-23 19:08 ` Hugh Dickins
2011-12-23 19:08 ` Hugh Dickins
2011-12-29 16:59 ` Mel Gorman
2011-12-29 16:59 ` Mel Gorman
2011-12-29 19:31 ` Rik van Riel
2011-12-29 19:31 ` Rik van Riel
2011-12-30 11:27 ` Mel Gorman
2011-12-30 11:27 ` Mel Gorman
2011-12-16 22:56 ` [PATCH 0/11] Reduce compaction-related stalls and improve asynchronous migration of dirty pages v6 Andrew Morton
2011-12-16 22:56 ` Andrew Morton
2011-12-19 14:40 ` Mel Gorman
2011-12-19 14:40 ` Mel Gorman
2011-12-16 23:37 ` Andrew Morton
2011-12-16 23:37 ` Andrew Morton
2011-12-19 14:20 ` Mel Gorman
2011-12-19 14:20 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2011-12-01 17:36 [PATCH 0/11] Reduce compaction-related stalls and improve asynchronous migration of dirty pages v5 Mel Gorman
2011-12-01 17:36 ` [PATCH 07/11] mm: page allocator: Do not call direct reclaim for THP allocations while compaction is deferred Mel Gorman
2011-12-01 17:36 ` Mel Gorman
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=4EEAC4AC.90600@redhat.com \
--to=riel@redhat.com \
--cc=aarcange@redhat.com \
--cc=adi@hexapodia.org \
--cc=akpm@linux-foundation.org \
--cc=davej@redhat.com \
--cc=jack@suse.cz \
--cc=jweiner@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=minchan.kim@gmail.com \
--cc=nai.xia@gmail.com \
/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.