From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, dgc@sgi.com,
Eric Dumazet <dada1@cosmosbay.com>, Mel Gorman <mel@csn.ul.ie>
Subject: Re: [RFC 2/3] SLUB: Implement targeted reclaim and partial list defragmentation
Date: Sat, 5 May 2007 19:11:53 +0200 [thread overview]
Message-ID: <20070505171153.GA19957@one.firstfloor.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0705050840570.26574@schroedinger.engr.sgi.com>
On Sat, May 05, 2007 at 08:42:50AM -0700, Christoph Lameter wrote:
> On Sat, 5 May 2007, Andi Kleen wrote:
>
> > clameter@sgi.com writes:
> > >
> > > NOTE: This patch is for conceptual review. I'd appreciate any feedback
> > > especially on the locking approach taken here. It will be critical to
> > > resolve the locking issue for this approach to become feasable.
> >
> > Do you have any numbers on how this improves dcache reclaim under memory pressure?
>
> How does one measure something like that?
You could measure how many dentries are flushed before an > order 1 allocation
is satisfied? Make sure to fill the dcache first.
There are no counters there for this, but that should be reasonably easy to add.
-Andi
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next prev parent reply other threads:[~2007-05-05 17:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-04 22:15 [RFC 0/3] Slab Defrag / Slab Targeted Reclaim and general Slab API changes clameter
2007-05-04 22:15 ` [RFC 1/3] SLUB: slab_ops instead of constructors / destructors clameter
2007-05-05 10:14 ` Pekka Enberg
2007-05-05 15:43 ` Christoph Lameter
2007-05-06 19:19 ` Bert Wesarg
2007-05-06 19:46 ` Satyam Sharma
2007-05-04 22:15 ` [RFC 2/3] SLUB: Implement targeted reclaim and partial list defragmentation clameter
2007-05-04 23:03 ` Christoph Lameter
2007-05-05 1:04 ` Randy Dunlap
2007-05-05 1:07 ` Christoph Lameter
2007-05-05 5:32 ` William Lee Irwin III
2007-05-05 15:35 ` Christoph Lameter
2007-05-05 10:38 ` Andi Kleen
2007-05-05 15:42 ` Christoph Lameter
2007-05-05 17:11 ` Andi Kleen [this message]
2007-05-09 15:05 ` Mel Gorman
2007-05-09 16:34 ` Christoph Lameter
2007-05-04 22:15 ` [RFC 3/3] Support targeted reclaim and slab defrag for dentry cache clameter
2007-05-05 5:07 ` [RFC 0/3] Slab Defrag / Slab Targeted Reclaim and general Slab API changes Eric Dumazet
2007-05-05 5:14 ` Christoph Lameter
2007-05-05 5:41 ` Eric Dumazet
2007-05-05 7:37 ` Eric Dumazet
2007-05-05 15:39 ` Christoph Lameter
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