From: Andrew Morton <akpm@linux-foundation.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org
Subject: Re: Use ZVC counters to establish exact size of dirtyable pages
Date: Tue, 13 Feb 2007 10:03:36 -0800 [thread overview]
Message-ID: <20070213100336.4ba10f3f.akpm@linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0702130933001.23798@schroedinger.engr.sgi.com>
> On Tue, 13 Feb 2007 09:43:43 -0800 (PST) Christoph Lameter <clameter@sgi.com> wrote:
> > I believe i386 NUMA is rare as hen's teeth and perhaps we can just forget
> > about optimising for it.
>
> I was just trying to avoid complaints..... I'd be glad to drop the stuff.
> Its going to be much simpler that way.
That code used to do a walk across each CPU's global memory counters and
hence was quite expensive. But it's called infrequently, so things were
OK. And it is still called infrequently, so I expect we'll still be OK
here.
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next prev parent reply other threads:[~2007-02-13 18:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-12 18:16 Use ZVC counters to establish exact size of dirtyable pages Christoph Lameter
2007-02-13 8:04 ` Andrew Morton
2007-02-13 17:43 ` Christoph Lameter
2007-02-13 18:03 ` Andrew Morton [this message]
2007-02-14 22:24 ` Andrew Morton
2007-02-14 22:41 ` Christoph Lameter
2007-02-14 22:49 ` Christoph Lameter
2007-02-14 23:19 ` Andrew Morton
2007-02-14 23:35 ` Christoph Lameter
2007-02-14 23:44 ` Andrew Morton
2007-02-15 0:00 ` Christoph Lameter
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