From: Minchan Kim <minchan@kernel.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
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 7/9] Revert "mm: have order > 0 compaction start off where it left"
Date: Tue, 25 Sep 2012 16:37:47 +0900 [thread overview]
Message-ID: <20120925073747.GO13234@bbox> (raw)
In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de>
On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote:
> This reverts commit 7db8889a (mm: have order > 0 compaction start off
> where it left) and commit de74f1cc (mm: have order > 0 compaction start
> near a pageblock with free pages). These patches were a good idea and
> tests confirmed that they massively reduced the amount of scanning but
> the implementation is complex and tricky to understand. A later patch
> will cache what pageblocks should be skipped and reimplements the
> concept of compact_cached_free_pfn on top for both migration and
> free scanners.
>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
> Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
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WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan@kernel.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
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 7/9] Revert "mm: have order > 0 compaction start off where it left"
Date: Tue, 25 Sep 2012 16:37:47 +0900 [thread overview]
Message-ID: <20120925073747.GO13234@bbox> (raw)
In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de>
On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote:
> This reverts commit 7db8889a (mm: have order > 0 compaction start off
> where it left) and commit de74f1cc (mm: have order > 0 compaction start
> near a pageblock with free pages). These patches were a good idea and
> tests confirmed that they massively reduced the amount of scanning but
> the implementation is complex and tricky to understand. A later patch
> will cache what pageblocks should be skipped and reimplements the
> concept of compact_cached_free_pfn on top for both migration and
> free scanners.
>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
> Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan@kernel.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>,
Andrew Morton <akpm@linux-foundation.org>,
Shaohua Li <shli@kernel.org>
Subject: Re: [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left"
Date: Tue, 25 Sep 2012 16:37:47 +0900 [thread overview]
Message-ID: <20120925073747.GO13234@bbox> (raw)
In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de>
On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote:
> This reverts commit 7db8889a (mm: have order > 0 compaction start off
> where it left) and commit de74f1cc (mm: have order > 0 compaction start
> near a pageblock with free pages). These patches were a good idea and
> tests confirmed that they massively reduced the amount of scanning but
> the implementation is complex and tricky to understand. A later patch
> will cache what pageblocks should be skipped and reimplements the
> concept of compact_cached_free_pfn on top for both migration and
> free scanners.
>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
> Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
next prev parent reply other threads:[~2012-09-25 7:37 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
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 [this message]
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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