From: Andrew Morton <akpm@zip.com.au>
To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: Ed Tomlinson <tomlins@cam.org>,
William Lee Irwin III <wli@holomorphy.com>,
lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: 2.5.33-mm1
Date: Wed, 04 Sep 2002 13:18:01 -0700 [thread overview]
Message-ID: <3D766A79.D1975DCA@zip.com.au> (raw)
In-Reply-To: <20020904202523.A15699@redhat.com>
"Stephen C. Tweedie" wrote:
>
> Hi,
>
> On Tue, Sep 03, 2002 at 08:33:37PM -0700, Andrew Morton wrote:
>
> > I *really* think we need to throw away those pages instantly.
> >
> > The only possible reason for hanging onto them is because they're
> > cache-warm. And we need a global-scope cpu-local hot pages queue
> > anyway.
>
> Yep --- except for caches with constructors, for which we do save a
> bit more by hanging onto the pages for longer.
Ah, of course. Thanks.
We'll still have a significant volume of pre-constructed objects
in the partially-full slabs: it seems that these things are fairly
prone to internal fragmentation, which works to our advantage in
this case.
So yes, perhaps we need to hang onto some preconstructed pages
for these slabs, if the internal fragmentation of the existing
part-filled slabs is low.
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next prev parent reply other threads:[~2002-09-04 20:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-04 2:51 2.5.33-mm1 Ed Tomlinson
2002-09-04 3:33 ` 2.5.33-mm1 Andrew Morton
2002-09-04 19:25 ` 2.5.33-mm1 Stephen C. Tweedie
2002-09-04 20:18 ` Andrew Morton [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-09-04 9:06 2.5.33-mm2 Andrew Morton
2002-09-04 17:16 ` 2.5.33-mm1 Paul Larson
2002-09-04 18:02 ` 2.5.33-mm1 Andrew Morton
2002-09-04 20:07 ` 2.5.33-mm1 Paul Larson
2002-09-03 4:16 2.5.33-mm1 Andrew Morton
2002-09-04 0:40 ` 2.5.33-mm1 William Lee Irwin III
2002-09-04 0:53 ` 2.5.33-mm1 Rik van Riel
2002-09-04 1:13 ` 2.5.33-mm1 Andrew Morton
2002-09-04 1:15 ` 2.5.33-mm1 William Lee Irwin III
2002-09-04 1:37 ` 2.5.33-mm1 Andrew Morton
2002-09-04 2:55 ` 2.5.33-mm1 Ed Tomlinson
2002-09-04 2:54 ` 2.5.33-mm1 William Lee Irwin III
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