From: "Martin J. Bligh" <mbligh@mbligh.org>
To: Sonny Rao <sonnyrao@us.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
jschopp@austin.ibm.com, Mel Gorman <mel@csn.ul.ie>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: Avoiding external fragmentation with a placement policy Version 12
Date: Fri, 03 Jun 2005 10:56:54 -0700 [thread overview]
Message-ID: <831680000.1117821414@flay> (raw)
In-Reply-To: <20050603174706.GA25663@localhost.localdomain>
--On Friday, June 03, 2005 12:47:06 -0500 Sonny Rao <sonnyrao@us.ibm.com> wrote:
> On Wed, Jun 01, 2005 at 04:28:34PM -0700, Martin J. Bligh wrote:
> <snip>
>> Seems to me we're basically pointing a blunderbuss at memory, and
>> blowing away large portions, and *hoping* something falls out the
>> bottom that's a big enough chunk?
>
> Isn't this also the case with the slab shrinkers ??
>
> We kill stuff until some free pages hopefully fall out, but this can
> be difficult when you have 20+ non-related items per page (dcache).
>
> I think there should be a better way there as well.
Yup. Same problem, I've been looking at that too ...
M.
WARNING: multiple messages have this Message-ID (diff)
From: "Martin J. Bligh" <mbligh@mbligh.org>
To: Sonny Rao <sonnyrao@us.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
jschopp@austin.ibm.com, Mel Gorman <mel@csn.ul.ie>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: Avoiding external fragmentation with a placement policy Version 12
Date: Fri, 03 Jun 2005 10:56:54 -0700 [thread overview]
Message-ID: <831680000.1117821414@flay> (raw)
In-Reply-To: <20050603174706.GA25663@localhost.localdomain>
--On Friday, June 03, 2005 12:47:06 -0500 Sonny Rao <sonnyrao@us.ibm.com> wrote:
> On Wed, Jun 01, 2005 at 04:28:34PM -0700, Martin J. Bligh wrote:
> <snip>
>> Seems to me we're basically pointing a blunderbuss at memory, and
>> blowing away large portions, and *hoping* something falls out the
>> bottom that's a big enough chunk?
>
> Isn't this also the case with the slab shrinkers ??
>
> We kill stuff until some free pages hopefully fall out, but this can
> be difficult when you have 20+ non-related items per page (dcache).
>
> I think there should be a better way there as well.
Yup. Same problem, I've been looking at that too ...
M.
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next prev parent reply other threads:[~2005-06-03 17:57 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-31 11:20 Avoiding external fragmentation with a placement policy Version 12 Mel Gorman
2005-05-31 11:20 ` Mel Gorman
2005-06-01 20:55 ` Joel Schopp
2005-06-01 20:55 ` Joel Schopp
2005-06-01 23:09 ` Nick Piggin
2005-06-01 23:09 ` Nick Piggin
2005-06-01 23:23 ` David S. Miller
2005-06-01 23:23 ` David S. Miller, Nick Piggin
2005-06-01 23:28 ` Martin J. Bligh
2005-06-01 23:28 ` Martin J. Bligh
2005-06-01 23:43 ` Nick Piggin
2005-06-01 23:43 ` Nick Piggin
2005-06-02 0:02 ` Martin J. Bligh
2005-06-02 0:02 ` Martin J. Bligh
2005-06-02 0:20 ` Nick Piggin
2005-06-02 0:20 ` Nick Piggin
2005-06-02 13:55 ` Mel Gorman
2005-06-02 13:55 ` Mel Gorman
2005-06-02 15:52 ` Joel Schopp
2005-06-02 15:52 ` Joel Schopp
2005-06-02 19:50 ` Ray Bryant
2005-06-02 19:50 ` Ray Bryant
2005-06-02 20:10 ` Joel Schopp
2005-06-02 20:10 ` Joel Schopp
2005-06-04 16:09 ` Marcelo Tosatti
2005-06-04 16:09 ` Marcelo Tosatti
2005-06-03 3:48 ` Nick Piggin
2005-06-03 3:48 ` Nick Piggin
2005-06-03 4:49 ` David S. Miller
2005-06-03 4:49 ` David S. Miller, Nick Piggin
2005-06-03 5:34 ` Martin J. Bligh
2005-06-03 5:34 ` Martin J. Bligh
2005-06-03 5:37 ` David S. Miller
2005-06-03 5:37 ` David S. Miller, Martin J. Bligh
2005-06-03 5:42 ` Martin J. Bligh
2005-06-03 5:42 ` Martin J. Bligh
2005-06-03 5:51 ` David S. Miller
2005-06-03 5:51 ` David S. Miller, Martin J. Bligh
2005-06-03 13:13 ` Mel Gorman
2005-06-03 13:13 ` Mel Gorman
2005-06-03 6:43 ` Nick Piggin
2005-06-03 6:43 ` Nick Piggin
2005-06-03 13:57 ` Martin J. Bligh
2005-06-03 13:57 ` Martin J. Bligh
2005-06-03 16:43 ` Dave Hansen
2005-06-03 16:43 ` Dave Hansen
2005-06-03 18:43 ` David S. Miller
2005-06-03 18:43 ` David S. Miller, Dave Hansen
2005-06-04 1:44 ` Herbert Xu
2005-06-04 1:44 ` Herbert Xu
2005-06-04 2:15 ` Nick Piggin
2005-06-04 2:15 ` Nick Piggin
2005-06-05 19:52 ` David S. Miller
2005-06-05 19:52 ` David S. Miller, Nick Piggin
2005-06-03 13:05 ` Mel Gorman
2005-06-03 13:05 ` Mel Gorman
2005-06-03 14:00 ` Martin J. Bligh
2005-06-03 14:00 ` Martin J. Bligh
2005-06-08 17:03 ` Mel Gorman
2005-06-08 17:03 ` Mel Gorman
2005-06-08 17:18 ` Martin J. Bligh
2005-06-08 17:18 ` Martin J. Bligh
2005-06-10 16:20 ` Christoph Lameter
2005-06-10 16:20 ` Christoph Lameter
2005-06-10 17:53 ` Steve Lord
2005-06-10 17:53 ` Steve Lord
2005-06-02 18:28 ` Andi Kleen
2005-06-02 18:28 ` Andi Kleen
2005-06-02 18:42 ` Martin J. Bligh
2005-06-02 18:42 ` Martin J. Bligh
2005-06-02 13:15 ` Mel Gorman
2005-06-02 13:15 ` Mel Gorman
2005-06-02 14:01 ` Martin J. Bligh
2005-06-02 14:01 ` Martin J. Bligh
[not found] ` <20050603174706.GA25663@localhost.localdomain>
2005-06-03 17:56 ` Martin J. Bligh [this message]
2005-06-03 17:56 ` Martin J. Bligh
2005-06-01 23:47 ` Mike Kravetz
2005-06-01 23:47 ` Mike Kravetz
2005-06-01 23:56 ` Nick Piggin
2005-06-01 23:56 ` Nick Piggin
2005-06-02 0:07 ` Mike Kravetz
2005-06-02 0:07 ` Mike Kravetz
2005-06-02 9:49 ` Mel Gorman
2005-06-02 9:49 ` Mel Gorman
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