From: Christoph Lameter <clameter@engr.sgi.com>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Rik van Riel <riel@redhat.com>,
Bill Irwin <bill.irwin@oracle.com>, Mel Gorman <mel@skynet.ie>,
npiggin@suse.de, mingo@elte.hu, jschopp@austin.ibm.com,
arjan@infradead.org, torvalds@linux-foundation.org,
mbligh@mbligh.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: The performance and behaviour of the anti-fragmentation related patches
Date: Fri, 2 Mar 2007 19:15:38 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0703021913030.31787@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20070303003319.GB23573@holomorphy.com>
On Fri, 2 Mar 2007, William Lee Irwin III wrote:
> On Fri, Mar 02, 2007 at 02:22:56PM -0800, Andrew Morton wrote:
> > Opterons seem to be particularly prone to lock starvation where a cacheline
> > gets captured in a single package for ever.
>
> AIUI that phenomenon is universal to NUMA. Maybe it's time we
> reexamined our locking algorithms in the light of fairness
> considerations.
This is a phenomenon that is usually addressed at the cache logic level.
Its a hardware maturation issue. A certain package should not be allowed
to hold onto a cacheline forever and other packages must have a mininum
time when they can operate on that cacheline.
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next prev parent reply other threads:[~2007-03-03 3:15 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 10:12 The performance and behaviour of the anti-fragmentation related patches Mel Gorman
2007-03-02 0:09 ` Andrew Morton
2007-03-02 0:44 ` Linus Torvalds
2007-03-02 1:52 ` Balbir Singh
2007-03-02 3:44 ` Linus Torvalds
2007-03-02 3:59 ` Andrew Morton
2007-03-02 5:11 ` Linus Torvalds
2007-03-02 5:50 ` KAMEZAWA Hiroyuki
2007-03-02 6:15 ` Paul Mundt
2007-03-02 17:01 ` Mel Gorman
2007-03-02 16:20 ` Mark Gross
2007-03-02 17:07 ` Andrew Morton
2007-03-02 17:35 ` Mark Gross
2007-03-02 18:02 ` Andrew Morton
2007-03-02 19:02 ` Mark Gross
2007-03-02 17:16 ` Linus Torvalds
2007-03-02 18:45 ` Mark Gross
2007-03-02 19:03 ` Linus Torvalds
2007-03-02 23:58 ` Martin J. Bligh
2007-03-02 4:18 ` Balbir Singh
2007-03-02 5:13 ` Jeremy Fitzhardinge
2007-03-06 4:16 ` Paul Mackerras
2007-03-02 16:58 ` Mel Gorman
2007-03-02 17:05 ` Joel Schopp
2007-03-05 3:21 ` Nick Piggin
2007-03-05 15:20 ` Joel Schopp
2007-03-05 16:01 ` Nick Piggin
2007-03-05 16:45 ` Joel Schopp
2007-05-03 8:49 ` Andy Whitcroft
2007-03-02 1:39 ` Balbir Singh
2007-03-02 2:34 ` KAMEZAWA Hiroyuki
2007-03-02 3:05 ` Christoph Lameter
2007-03-02 3:57 ` Nick Piggin
2007-03-02 4:06 ` Christoph Lameter
2007-03-02 4:21 ` Nick Piggin
2007-03-02 4:31 ` Christoph Lameter
2007-03-02 5:06 ` Nick Piggin
2007-03-02 5:40 ` Christoph Lameter
2007-03-02 5:49 ` Nick Piggin
2007-03-02 5:53 ` Christoph Lameter
2007-03-02 6:08 ` Nick Piggin
2007-03-02 6:19 ` Christoph Lameter
2007-03-02 6:29 ` Nick Piggin
2007-03-02 6:51 ` Christoph Lameter
2007-03-02 7:03 ` Andrew Morton
2007-03-02 7:19 ` Nick Piggin
2007-03-02 7:44 ` Christoph Lameter
2007-03-02 8:12 ` Nick Piggin
2007-03-02 8:21 ` Christoph Lameter
2007-03-02 8:38 ` Nick Piggin
2007-03-02 17:09 ` Christoph Lameter
2007-03-04 1:26 ` Rik van Riel
2007-03-04 1:51 ` Andrew Morton
2007-03-04 1:58 ` Rik van Riel
2007-03-02 5:50 ` Christoph Lameter
2007-03-02 4:29 ` Andrew Morton
2007-03-02 4:33 ` Christoph Lameter
2007-03-02 4:58 ` Andrew Morton
2007-03-02 4:20 ` Paul Mundt
2007-03-02 13:50 ` Arjan van de Ven
2007-03-02 15:29 ` Rik van Riel
2007-03-02 16:58 ` Andrew Morton
2007-03-02 17:09 ` Mel Gorman
2007-03-02 17:23 ` Christoph Lameter
2007-03-02 17:35 ` Andrew Morton
2007-03-02 17:43 ` Rik van Riel
2007-03-02 18:06 ` Andrew Morton
2007-03-02 18:15 ` Christoph Lameter
2007-03-02 18:23 ` Andrew Morton
2007-03-02 18:23 ` Rik van Riel
2007-03-02 19:31 ` Christoph Lameter
2007-03-02 19:40 ` Rik van Riel
2007-03-02 21:12 ` Bill Irwin
2007-03-02 21:19 ` Rik van Riel
2007-03-02 21:52 ` Andrew Morton
2007-03-02 22:03 ` Rik van Riel
2007-03-02 22:22 ` Andrew Morton
2007-03-02 22:34 ` Rik van Riel
2007-03-02 22:51 ` Martin Bligh
2007-03-02 22:54 ` Rik van Riel
2007-03-02 23:28 ` Martin J. Bligh
2007-03-03 0:24 ` Andrew Morton
2007-03-02 22:52 ` Chuck Ebbert
2007-03-02 22:59 ` Andrew Morton
2007-03-02 23:20 ` Rik van Riel
2007-03-03 1:40 ` William Lee Irwin III
2007-03-03 1:58 ` Andrew Morton
2007-03-03 3:55 ` William Lee Irwin III
2007-03-03 0:33 ` William Lee Irwin III
2007-03-03 0:54 ` Andrew Morton
2007-03-03 3:15 ` Christoph Lameter [this message]
2007-03-03 4:19 ` William Lee Irwin III
2007-03-03 17:16 ` Martin J. Bligh
2007-03-03 17:50 ` Christoph Lameter
2007-03-02 20:59 ` Bill Irwin
2007-03-02 1:52 ` Bill Irwin
2007-03-02 10:38 ` Mel Gorman
2007-03-02 16:31 ` Joel Schopp
2007-03-02 21:37 ` Bill Irwin
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