From: Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Richard Davies <richard@arachsys.com>,
Shaohua Li <shli@kernel.org>, Rik van Riel <riel@redhat.com>,
Avi Kivity <avi@redhat.com>, QEMU-devel <qemu-devel@nongnu.org>,
KVM <kvm@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long
Date: Fri, 21 Sep 2012 14:31:22 -0700 [thread overview]
Message-ID: <20120921143122.5be94b28.akpm@linux-foundation.org> (raw)
In-Reply-To: <1348224383-1499-5-git-send-email-mgorman@suse.de>
On Fri, 21 Sep 2012 11:46:18 +0100
Mel Gorman <mgorman@suse.de> wrote:
> Changelog since V2
> o Fix BUG_ON triggered due to pages left on cc.migratepages
> o Make compact_zone_order() require non-NULL arg `contended'
>
> Changelog since V1
> o only abort the compaction if lock is contended or run too long
> o Rearranged the code by Andrea Arcangeli.
>
> isolate_migratepages_range() might isolate no pages if for example when
> zone->lru_lock is contended and running asynchronous compaction. In this
> case, we should abort compaction, otherwise, compact_zone will run a
> useless loop and make zone->lru_lock is even contended.
hm, this appears to be identical to
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch
so I simply omitted patches 2, 3 and 4.
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WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Richard Davies <richard@arachsys.com>,
Shaohua Li <shli@kernel.org>, Rik van Riel <riel@redhat.com>,
Avi Kivity <avi@redhat.com>, QEMU-devel <qemu-devel@nongnu.org>,
KVM <kvm@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long
Date: Fri, 21 Sep 2012 14:31:22 -0700 [thread overview]
Message-ID: <20120921143122.5be94b28.akpm@linux-foundation.org> (raw)
In-Reply-To: <1348224383-1499-5-git-send-email-mgorman@suse.de>
On Fri, 21 Sep 2012 11:46:18 +0100
Mel Gorman <mgorman@suse.de> wrote:
> Changelog since V2
> o Fix BUG_ON triggered due to pages left on cc.migratepages
> o Make compact_zone_order() require non-NULL arg `contended'
>
> Changelog since V1
> o only abort the compaction if lock is contended or run too long
> o Rearranged the code by Andrea Arcangeli.
>
> isolate_migratepages_range() might isolate no pages if for example when
> zone->lru_lock is contended and running asynchronous compaction. In this
> case, we should abort compaction, otherwise, compact_zone will run a
> useless loop and make zone->lru_lock is even contended.
hm, this appears to be identical to
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch
so I simply omitted patches 2, 3 and 4.
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Richard Davies <richard@arachsys.com>, KVM <kvm@vger.kernel.org>,
QEMU-devel <qemu-devel@nongnu.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Avi Kivity <avi@redhat.com>,
Shaohua Li <shli@kernel.org>
Subject: Re: [Qemu-devel] [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long
Date: Fri, 21 Sep 2012 14:31:22 -0700 [thread overview]
Message-ID: <20120921143122.5be94b28.akpm@linux-foundation.org> (raw)
In-Reply-To: <1348224383-1499-5-git-send-email-mgorman@suse.de>
On Fri, 21 Sep 2012 11:46:18 +0100
Mel Gorman <mgorman@suse.de> wrote:
> Changelog since V2
> o Fix BUG_ON triggered due to pages left on cc.migratepages
> o Make compact_zone_order() require non-NULL arg `contended'
>
> Changelog since V1
> o only abort the compaction if lock is contended or run too long
> o Rearranged the code by Andrea Arcangeli.
>
> isolate_migratepages_range() might isolate no pages if for example when
> zone->lru_lock is contended and running asynchronous compaction. In this
> case, we should abort compaction, otherwise, compact_zone will run a
> useless loop and make zone->lru_lock is even contended.
hm, this appears to be identical to
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch
so I simply omitted patches 2, 3 and 4.
next prev parent reply other threads:[~2012-09-21 21:31 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 10:46 [PATCH 0/9] Reduce compaction scanning and lock contention Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 10:46 ` [PATCH 1/9] Revert "mm: compaction: check lock contention first before taking lock" Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:46 ` Rafael Aquini
2012-09-21 17:46 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:46 ` Rafael Aquini
2012-09-21 10:46 ` [PATCH 2/9] Revert "mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix" Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:47 ` Rafael Aquini
2012-09-21 17:47 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:47 ` Rafael Aquini
2012-09-21 10:46 ` [PATCH 3/9] Revert "mm: compaction: abort compaction loop if lock is contended or run too long" Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:48 ` Rafael Aquini
2012-09-21 17:48 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:48 ` Rafael Aquini
2012-09-21 10:46 ` [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:50 ` Rafael Aquini
2012-09-21 17:50 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:50 ` Rafael Aquini
2012-09-21 21:31 ` Andrew Morton [this message]
2012-09-21 21:31 ` [Qemu-devel] " Andrew Morton
2012-09-21 21:31 ` Andrew Morton
2012-09-25 7:34 ` Minchan Kim
2012-09-25 7:34 ` [Qemu-devel] " Minchan Kim
2012-09-25 7:34 ` Minchan Kim
2012-09-21 10:46 ` [PATCH 5/9] mm: compaction: Acquire the zone->lru_lock as late as possible Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:51 ` Rafael Aquini
2012-09-21 17:51 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:51 ` Rafael Aquini
2012-09-25 7:05 ` Minchan Kim
2012-09-25 7:05 ` [Qemu-devel] " Minchan Kim
2012-09-25 7:05 ` Minchan Kim
2012-09-25 7:51 ` Mel Gorman
2012-09-25 7:51 ` [Qemu-devel] " Mel Gorman
2012-09-25 7:51 ` Mel Gorman
2012-09-25 8:13 ` Minchan Kim
2012-09-25 8:13 ` [Qemu-devel] " Minchan Kim
2012-09-25 8:13 ` Minchan Kim
2012-09-25 21:39 ` Andrew Morton
2012-09-25 21:39 ` [Qemu-devel] " Andrew Morton
2012-09-25 21:39 ` Andrew Morton
2012-09-26 0:23 ` Minchan Kim
2012-09-26 0:23 ` [Qemu-devel] " Minchan Kim
2012-09-26 0:23 ` Minchan Kim
2012-09-26 10:17 ` Mel Gorman
2012-09-26 10:17 ` [Qemu-devel] " Mel Gorman
2012-09-26 10:17 ` Mel Gorman
2012-09-21 10:46 ` [PATCH 6/9] mm: compaction: Acquire the zone->lock " Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:52 ` Rafael Aquini
2012-09-21 17:52 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:52 ` Rafael Aquini
2012-09-21 21:35 ` Andrew Morton
2012-09-21 21:35 ` [Qemu-devel] " Andrew Morton
2012-09-21 21:35 ` Andrew Morton
2012-09-24 8:52 ` Mel Gorman
2012-09-24 8:52 ` [Qemu-devel] " Mel Gorman
2012-09-24 8:52 ` Mel Gorman
2012-09-25 7:36 ` Minchan Kim
2012-09-25 7:36 ` [Qemu-devel] " Minchan Kim
2012-09-25 7:36 ` Minchan Kim
2012-09-25 7:35 ` Minchan Kim
2012-09-25 7:35 ` [Qemu-devel] " Minchan Kim
2012-09-25 7:35 ` Minchan Kim
2012-09-21 10:46 ` [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:52 ` Rafael Aquini
2012-09-21 17:52 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:52 ` Rafael Aquini
2012-09-25 7:37 ` Minchan Kim
2012-09-25 7:37 ` [Qemu-devel] " Minchan Kim
2012-09-25 7:37 ` Minchan Kim
2012-09-21 10:46 ` [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:53 ` Rafael Aquini
2012-09-21 17:53 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:53 ` Rafael Aquini
2012-09-21 21:36 ` Andrew Morton
2012-09-21 21:36 ` [Qemu-devel] " Andrew Morton
2012-09-21 21:36 ` Andrew Morton
2012-09-24 9:39 ` Mel Gorman
2012-09-24 9:39 ` [Qemu-devel] " Mel Gorman
2012-09-24 9:39 ` Mel Gorman
2012-09-24 21:26 ` Andrew Morton
2012-09-24 21:26 ` [Qemu-devel] " Andrew Morton
2012-09-24 21:26 ` Andrew Morton
2012-09-25 9:12 ` Mel Gorman
2012-09-25 9:12 ` [Qemu-devel] " Mel Gorman
2012-09-25 9:12 ` Mel Gorman
2012-09-25 20:03 ` Andrew Morton
2012-09-25 20:03 ` [Qemu-devel] " Andrew Morton
2012-09-25 20:03 ` Andrew Morton
2012-09-27 12:06 ` [PATCH] mm: compaction: cache if a pageblock was scanned and no pages were isolated -fix2 Mel Gorman
2012-09-27 12:06 ` [Qemu-devel] " Mel Gorman
2012-09-27 12:06 ` Mel Gorman
2012-09-27 13:12 ` [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated Mel Gorman
2012-09-27 13:12 ` [Qemu-devel] " Mel Gorman
2012-09-27 13:12 ` Mel Gorman
2012-09-26 0:49 ` Minchan Kim
2012-09-26 0:49 ` [Qemu-devel] " Minchan Kim
2012-09-26 0:49 ` Minchan Kim
2012-09-27 12:14 ` Mel Gorman
2012-09-27 12:14 ` [Qemu-devel] " Mel Gorman
2012-09-27 12:14 ` Mel Gorman
2012-09-21 10:46 ` [PATCH 9/9] mm: compaction: Restart compaction from near where it left off Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] " Mel Gorman
2012-09-21 10:46 ` Mel Gorman
2012-09-21 17:54 ` Rafael Aquini
2012-09-21 17:54 ` [Qemu-devel] " Rafael Aquini
2012-09-21 17:54 ` Rafael Aquini
2012-09-21 13:51 ` [PATCH 0/9] Reduce compaction scanning and lock contention Rik van Riel
2012-09-21 13:51 ` [Qemu-devel] " Rik van Riel
2012-09-21 13:51 ` Rik van Riel
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