From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Konstantin Khlebnikov <khlebnikov@openvz.org>,
Hugh Dickins <hughd@google.com>, Ying Han <yinghan@google.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] mm: vmscan: Remove lumpy reclaim
Date: Wed, 11 Apr 2012 13:25:12 -0400 [thread overview]
Message-ID: <4F85BE78.8040205@redhat.com> (raw)
In-Reply-To: <1334162298-18942-2-git-send-email-mgorman@suse.de>
On 04/11/2012 12:38 PM, Mel Gorman wrote:
> Lumpy reclaim had a purpose but in the mind of some, it was to kick
> the system so hard it trashed. For others the purpose was to complicate
> vmscan.c. Over time it was giving softer shoes and a nicer attitude but
> memory compaction needs to step up and replace it so this patch sends
> lumpy reclaim to the farm.
>
> The tracepoint format changes for isolating LRU pages with this patch
> applied. Furthermore reclaim/compaction can no longer queue dirty pages in
> pageout() if the underlying BDI is congested. Lumpy reclaim used this logic
> and reclaim/compaction was using it in error.
>
> Signed-off-by: Mel Gorman<mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
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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>,
Konstantin Khlebnikov <khlebnikov@openvz.org>,
Hugh Dickins <hughd@google.com>, Ying Han <yinghan@google.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] mm: vmscan: Remove lumpy reclaim
Date: Wed, 11 Apr 2012 13:25:12 -0400 [thread overview]
Message-ID: <4F85BE78.8040205@redhat.com> (raw)
In-Reply-To: <1334162298-18942-2-git-send-email-mgorman@suse.de>
On 04/11/2012 12:38 PM, Mel Gorman wrote:
> Lumpy reclaim had a purpose but in the mind of some, it was to kick
> the system so hard it trashed. For others the purpose was to complicate
> vmscan.c. Over time it was giving softer shoes and a nicer attitude but
> memory compaction needs to step up and replace it so this patch sends
> lumpy reclaim to the farm.
>
> The tracepoint format changes for isolating LRU pages with this patch
> applied. Furthermore reclaim/compaction can no longer queue dirty pages in
> pageout() if the underlying BDI is congested. Lumpy reclaim used this logic
> and reclaim/compaction was using it in error.
>
> Signed-off-by: Mel Gorman<mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
next prev parent reply other threads:[~2012-04-11 18:52 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-11 16:38 [PATCH 0/3] Removal of lumpy reclaim V2 Mel Gorman
2012-04-11 16:38 ` Mel Gorman
2012-04-11 16:38 ` [PATCH 1/3] mm: vmscan: Remove lumpy reclaim Mel Gorman
2012-04-11 16:38 ` Mel Gorman
2012-04-11 17:25 ` Rik van Riel [this message]
2012-04-11 17:25 ` Rik van Riel
2012-04-11 18:54 ` KOSAKI Motohiro
2012-04-11 18:54 ` KOSAKI Motohiro
2012-04-11 16:38 ` [PATCH 2/3] mm: vmscan: Do not stall on writeback during memory compaction Mel Gorman
2012-04-11 16:38 ` Mel Gorman
2012-04-11 17:26 ` Rik van Riel
2012-04-11 17:26 ` Rik van Riel
2012-04-11 18:51 ` KOSAKI Motohiro
2012-04-11 18:51 ` KOSAKI Motohiro
2012-04-11 16:38 ` [PATCH 3/3] mm: vmscan: Remove reclaim_mode_t Mel Gorman
2012-04-11 16:38 ` Mel Gorman
2012-04-11 17:26 ` Rik van Riel
2012-04-11 17:26 ` Rik van Riel
2012-04-11 19:48 ` KOSAKI Motohiro
2012-04-11 19:48 ` KOSAKI Motohiro
2012-04-11 17:17 ` [PATCH 0/3] Removal of lumpy reclaim V2 Rik van Riel
2012-04-11 17:17 ` Rik van Riel
2012-04-11 17:52 ` Mel Gorman
2012-04-11 17:52 ` Mel Gorman
2012-04-11 18:06 ` Rik van Riel
2012-04-11 18:06 ` Rik van Riel
2012-04-12 9:32 ` Mel Gorman
2012-04-12 9:32 ` Mel Gorman
2012-04-11 23:37 ` Ying Han
2012-04-11 23:37 ` Ying Han
2012-04-12 5:49 ` Mel Gorman
2012-04-12 5:49 ` Mel Gorman
2012-04-11 23:54 ` Hugh Dickins
2012-04-11 23:54 ` Hugh Dickins
2012-04-12 5:44 ` Mel Gorman
2012-04-12 5:44 ` Mel Gorman
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