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From: Paul Jackson <pj@sgi.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: ak@suse.de, clameter@engr.sgi.com, akpm@osdl.org, dgc@sgi.com,
	steiner@sgi.com, Simon.Derr@bull.net,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] cpuset memory spread basic implementation
Date: Mon, 6 Feb 2006 12:01:09 -0800	[thread overview]
Message-ID: <20060206120109.0738d6a2.pj@sgi.com> (raw)
In-Reply-To: <20060206184330.GA22275@elte.hu>

Ingo wrote:
> we should default to local.

Agreed.  There is much software and systems management expectations
sitting on top of this, that have certain expectations of the default
memory placement behaviour, to a rough degree, of the system.

They are expecting node-local placement.

We would only change that default if it was shown to be substantially
wrong headed in a substantial number of cases.  It has not been
so shown.  It is either an adequate or quite desirable default for
most cases.

Rather we need to consider optional behaviour, for use on workloads
for which other policies are worth developing and invoking.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401

  reply	other threads:[~2006-02-06 20:01 UTC|newest]

Thread overview: 102+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-04  7:19 [PATCH 1/5] cpuset memory spread basic implementation Paul Jackson
2006-02-04  7:19 ` [PATCH 2/5] cpuset memory spread page cache implementation and hooks Paul Jackson
2006-02-04 23:49   ` Andrew Morton
2006-02-05  1:42     ` Paul Jackson
2006-02-05  1:54       ` Andrew Morton
2006-02-05  3:28         ` Christoph Lameter
2006-02-05  5:06           ` Andrew Morton
2006-02-05  6:08             ` Paul Jackson
2006-02-05  6:15               ` Andrew Morton
2006-02-05  6:28                 ` Paul Jackson
2006-02-06  0:20                 ` Paul Jackson
2006-02-06  5:51                 ` Paul Jackson
2006-02-06  7:14                   ` Pekka J Enberg
2006-02-06  7:42                     ` Pekka J Enberg
2006-02-06  7:51                       ` Pekka J Enberg
2006-02-06 17:32                         ` Pekka Enberg
2006-02-04  7:19 ` [PATCH 3/5] cpuset memory spread slab cache implementation Paul Jackson
2006-02-04 23:49   ` Andrew Morton
2006-02-05  3:37     ` Christoph Lameter
2006-02-04  7:19 ` [PATCH 4/5] cpuset memory spread slab cache optimizations Paul Jackson
2006-02-04 23:50   ` Andrew Morton
2006-02-05  3:18     ` Paul Jackson
2006-02-04 23:50   ` Andrew Morton
2006-02-05  4:10     ` Paul Jackson
2006-02-04  7:19 ` [PATCH 5/5] cpuset memory spread slab cache hooks Paul Jackson
2006-02-06  4:37   ` Andrew Morton
2006-02-04 23:49 ` [PATCH 1/5] cpuset memory spread basic implementation Andrew Morton
2006-02-05  3:35   ` Christoph Lameter
2006-02-06  4:33   ` Andrew Morton
2006-02-06  5:50     ` Paul Jackson
2006-02-06  6:02       ` Andrew Morton
2006-02-06  6:17         ` Ingo Molnar
2006-02-06  7:22           ` Paul Jackson
2006-02-06  7:43             ` Ingo Molnar
2006-02-06  8:19               ` Paul Jackson
2006-02-06  8:22                 ` Ingo Molnar
2006-02-06  8:40                   ` Ingo Molnar
2006-02-06  9:03                     ` Paul Jackson
2006-02-06  9:09                       ` Ingo Molnar
2006-02-06  9:27                         ` Paul Jackson
2006-02-06  9:37                           ` Ingo Molnar
2006-02-06 20:22                     ` Paul Jackson
2006-02-06  8:47                   ` Paul Jackson
2006-02-06  8:51                     ` Ingo Molnar
2006-02-06  9:09                       ` Paul Jackson
2006-02-06 10:09                   ` Andi Kleen
2006-02-06 10:11                     ` Ingo Molnar
2006-02-06 10:16                       ` Andi Kleen
2006-02-06 10:23                         ` Ingo Molnar
2006-02-06 10:35                           ` Andi Kleen
2006-02-06 14:42                           ` Paul Jackson
2006-02-06 14:35                         ` Paul Jackson
2006-02-06 16:48                           ` Christoph Lameter
2006-02-06 17:11                             ` Andi Kleen
2006-02-06 18:21                               ` Christoph Lameter
2006-02-06 18:36                                 ` Andi Kleen
2006-02-06 18:43                                   ` Christoph Lameter
2006-02-06 18:48                                     ` Andi Kleen
2006-02-06 19:19                                       ` Christoph Lameter
2006-02-06 20:27                                       ` Paul Jackson
2006-02-06 18:43                                   ` Ingo Molnar
2006-02-06 20:01                                     ` Paul Jackson [this message]
2006-02-06 20:05                                       ` Ingo Molnar
2006-02-06 20:27                                         ` Christoph Lameter
2006-02-06 20:41                                           ` Ingo Molnar
2006-02-06 20:49                                             ` Christoph Lameter
2006-02-06 21:07                                               ` Ingo Molnar
2006-02-06 22:10                                                 ` Christoph Lameter
2006-02-06 23:29                                                   ` Ingo Molnar
2006-02-06 23:45                                         ` Paul Jackson
2006-02-07  0:19                                           ` Ingo Molnar
2006-02-07  1:17                                             ` David Chinner
2006-02-07  9:31                                             ` Andi Kleen
2006-02-07 11:53                                               ` Ingo Molnar
2006-02-07 12:14                                                 ` Andi Kleen
2006-02-07 12:30                                                   ` Ingo Molnar
2006-02-07 12:43                                                     ` Andi Kleen
2006-02-07 12:58                                                       ` Ingo Molnar
2006-02-07 13:14                                                         ` Andi Kleen
2006-02-07 14:11                                                           ` Ingo Molnar
2006-02-07 14:23                                                             ` Andi Kleen
2006-02-07 17:11                                                               ` Christoph Lameter
2006-02-07 17:29                                                                 ` Andi Kleen
2006-02-07 17:39                                                                   ` Christoph Lameter
2006-02-07 17:10                                                       ` Christoph Lameter
2006-02-07 17:28                                                         ` Andi Kleen
2006-02-07 17:42                                                           ` Christoph Lameter
2006-02-07 17:51                                                             ` Andi Kleen
2006-02-07 17:06                                                     ` Christoph Lameter
2006-02-07 17:26                                                       ` Andi Kleen
2006-02-04 23:50 ` Andrew Morton
2006-02-04 23:57   ` David S. Miller
2006-02-06  4:37 ` Andrew Morton
2006-02-06  6:02   ` Ingo Molnar
2006-02-06  6:56   ` Paul Jackson
2006-02-06  7:08     ` Andrew Morton
2006-02-06  7:39       ` Ingo Molnar
2006-02-06  8:22         ` Paul Jackson
2006-02-06  8:35         ` Paul Jackson
2006-02-06  9:32       ` Paul Jackson
2006-02-06  9:57         ` Andrew Morton
2006-02-06  9:18 ` Simon Derr

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