From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Christoph Lameter <cl@linux-foundation.org>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 03/12] Export unusable free space index via /proc/pagetypeinfo
Date: Tue, 16 Feb 2010 13:28:41 -0500 [thread overview]
Message-ID: <4B7AE3D9.9040504@redhat.com> (raw)
In-Reply-To: <1265976059-7459-4-git-send-email-mel@csn.ul.ie>
On 02/12/2010 07:00 AM, Mel Gorman wrote:
> Unusuable free space index is a measure of external fragmentation that
> takes the allocation size into account. For the most part, the huge page
> size will be the size of interest but not necessarily so it is exported
> on a per-order and per-zone basis via /proc/pagetypeinfo.
>
> The index is normally calculated as a value between 0 and 1 which is
> obviously unsuitable within the kernel. Instead, the first three decimal
> places are used as a value between 0 and 1000 for an integer approximation.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>
Acked-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 <mel@csn.ul.ie>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Christoph Lameter <cl@linux-foundation.org>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 03/12] Export unusable free space index via /proc/pagetypeinfo
Date: Tue, 16 Feb 2010 13:28:41 -0500 [thread overview]
Message-ID: <4B7AE3D9.9040504@redhat.com> (raw)
In-Reply-To: <1265976059-7459-4-git-send-email-mel@csn.ul.ie>
On 02/12/2010 07:00 AM, Mel Gorman wrote:
> Unusuable free space index is a measure of external fragmentation that
> takes the allocation size into account. For the most part, the huge page
> size will be the size of interest but not necessarily so it is exported
> on a per-order and per-zone basis via /proc/pagetypeinfo.
>
> The index is normally calculated as a value between 0 and 1 which is
> obviously unsuitable within the kernel. Instead, the first three decimal
> places are used as a value between 0 and 1000 for an integer approximation.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed.
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next prev parent reply other threads:[~2010-02-16 18:30 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-12 12:00 [PATCH 0/12] Memory Compaction v2r12 Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 01/12] mm: Document /proc/pagetypeinfo Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-12 15:54 ` Christoph Lameter
2010-02-12 15:54 ` Christoph Lameter
2010-02-16 7:05 ` KOSAKI Motohiro
2010-02-16 7:05 ` KOSAKI Motohiro
2010-02-12 12:00 ` [PATCH 02/12] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-16 17:43 ` Rik van Riel
2010-02-16 17:43 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 03/12] Export unusable free space index via /proc/pagetypeinfo Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-16 7:03 ` KOSAKI Motohiro
2010-02-16 7:03 ` KOSAKI Motohiro
2010-02-16 8:36 ` Mel Gorman
2010-02-16 8:36 ` Mel Gorman
2010-02-16 8:41 ` KOSAKI Motohiro
2010-02-16 8:41 ` KOSAKI Motohiro
2010-02-16 8:50 ` Mel Gorman
2010-02-16 8:50 ` Mel Gorman
2010-02-16 18:28 ` Rik van Riel [this message]
2010-02-16 18:28 ` Rik van Riel
2010-02-18 15:23 ` Minchan Kim
2010-02-18 15:23 ` Minchan Kim
2010-02-18 15:32 ` Mel Gorman
2010-02-18 15:32 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 04/12] Export fragmentation " Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-16 7:59 ` KOSAKI Motohiro
2010-02-16 7:59 ` KOSAKI Motohiro
2010-02-16 8:41 ` Mel Gorman
2010-02-16 8:41 ` Mel Gorman
2010-02-16 8:49 ` KOSAKI Motohiro
2010-02-16 8:49 ` KOSAKI Motohiro
2010-02-17 1:44 ` Rik van Riel
2010-02-17 1:44 ` Rik van Riel
2010-02-18 15:37 ` Minchan Kim
2010-02-18 15:37 ` Minchan Kim
2010-02-12 12:00 ` [PATCH 05/12] Memory compaction core Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-16 8:31 ` KOSAKI Motohiro
2010-02-16 8:31 ` KOSAKI Motohiro
2010-02-16 8:48 ` Mel Gorman
2010-02-16 8:48 ` Mel Gorman
2010-02-16 14:55 ` Christoph Lameter
2010-02-16 14:55 ` Christoph Lameter
2010-02-16 14:59 ` Mel Gorman
2010-02-16 14:59 ` Mel Gorman
2010-02-18 19:37 ` Christoph Lameter
2010-02-18 19:37 ` Christoph Lameter
2010-02-18 21:35 ` Mel Gorman
2010-02-18 21:35 ` Mel Gorman
2010-02-19 0:04 ` KAMEZAWA Hiroyuki
2010-02-19 0:04 ` KAMEZAWA Hiroyuki
2010-02-17 13:29 ` Mel Gorman
2010-02-17 13:29 ` Mel Gorman
2010-02-17 15:45 ` Rik van Riel
2010-02-17 15:45 ` Rik van Riel
2010-02-18 16:58 ` Minchan Kim
2010-02-18 16:58 ` Minchan Kim
2010-02-18 17:34 ` Mel Gorman
2010-02-18 17:34 ` Mel Gorman
2010-02-19 1:21 ` Minchan Kim
2010-02-19 1:21 ` Minchan Kim
2010-02-19 14:33 ` Mel Gorman
2010-02-19 14:33 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 06/12] Add /proc trigger for memory compaction Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-12 18:34 ` Valdis.Kletnieks
2010-02-12 18:38 ` Mel Gorman
2010-02-12 18:38 ` Mel Gorman
2010-02-17 16:30 ` Rik van Riel
2010-02-17 16:30 ` Rik van Riel
2010-02-18 19:51 ` Christoph Lameter
2010-02-18 19:51 ` Christoph Lameter
2010-02-19 1:56 ` Minchan Kim
2010-02-19 1:56 ` Minchan Kim
2010-02-12 12:00 ` [PATCH 07/12] Add /sys trigger for per-node " Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-17 16:30 ` Rik van Riel
2010-02-17 16:30 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 08/12] Direct compact when a high-order allocation fails Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-18 3:57 ` Rik van Riel
2010-02-18 3:57 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 09/12] Do not compact within a preferred zone after a compaction failure Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-18 4:09 ` Rik van Riel
2010-02-18 4:09 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 10/12] mm: Check for an empty VMA list in rmap_walk_anon Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-17 18:22 ` Mel Gorman
2010-02-17 18:22 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 11/12] mm: Take the RCU read lock " Mel Gorman
2010-02-12 12:00 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 12/12] mm: Check the anon_vma is still valid in rmap_walk_anon() Mel Gorman
2010-02-12 12:00 ` Mel Gorman
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