From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
akpm@linux-foundation.org, eric.whitney@hp.com,
Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH] 2.6.23-rc6: Fix NUMA Memory Policy Reference Counting
Date: Tue, 18 Sep 2007 00:25:40 +0200 [thread overview]
Message-ID: <200709180025.40837.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0709171235190.28178@schroedinger.engr.sgi.com>
> The patch does require concurrent increments and decrements in the main
> fault patch. The potential is to create another bouncing cacheline for
> concurrent faults. This looks like it would cause a performance issue.
While may be true correctness is always more important than performance.
So I think this is the right thing for .23. Any performance improvements
if needed can come later.
-Andi
next prev parent reply other threads:[~2007-09-17 22:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070830185053.22619.96398.sendpatchset@localhost>
2007-09-17 19:32 ` [PATCH] 2.6.23-rc6: Fix NUMA Memory Policy Reference Counting Lee Schermerhorn
2007-09-17 19:37 ` Christoph Lameter
2007-09-17 20:19 ` Lee Schermerhorn
2007-09-17 21:23 ` Christoph Lameter
2007-09-17 22:25 ` Andi Kleen [this message]
2007-09-18 19:30 ` Christoph Lameter
2007-09-17 22:28 ` Andi Kleen
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