From: Christoph Lameter <clameter@sgi.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Matt Mackall <mpm@selenic.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Thomas Graf <tgraf@suug.ch>, David Miller <davem@davemloft.net>,
Andrew Morton <akpm@linux-foundation.org>,
Daniel Phillips <phillips@google.com>,
Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH 0/5] make slab gfp fair
Date: Wed, 16 May 2007 14:13:04 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0705161410220.11517@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <1179349494.2912.62.camel@lappy>
On Wed, 16 May 2007, Peter Zijlstra wrote:
> > How we know that we are out of trouble? Just try another alloc and see? If
> > that is the case then we may be failing allocations after the memory
> > situation has cleared up.
> No, no, for each regular allocation we retry to populate ->cpu_slab with
> a new slab. If that works we're out of the woods and the ->reserve_slab
> is cleaned up.
Hmmm.. so we could simplify the scheme by storing the last rank
somewheres.
If the alloc has less priority and we can extend the slab then
clear up the situation.
If we cannot extend the slab then the alloc must fail.
Could you put the rank into the page flags? On 64 bit at least there
should be enough space.
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next prev parent reply other threads:[~2007-05-16 21:13 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-14 13:19 Peter Zijlstra
2007-05-14 13:19 ` [PATCH 1/5] mm: page allocation rank Peter Zijlstra
2007-05-14 13:19 ` [PATCH 2/5] mm: slab allocation fairness Peter Zijlstra
2007-05-14 15:51 ` Christoph Lameter
2007-05-14 13:19 ` [PATCH 3/5] mm: slub " Peter Zijlstra
2007-05-14 15:49 ` Christoph Lameter
2007-05-14 16:14 ` Peter Zijlstra
2007-05-14 16:35 ` Christoph Lameter
2007-05-14 13:19 ` [PATCH 4/5] mm: slob " Peter Zijlstra
2007-05-14 13:19 ` [PATCH 5/5] mm: allow mempool to fall back to memalloc reserves Peter Zijlstra
2007-05-14 15:53 ` [PATCH 0/5] make slab gfp fair Christoph Lameter
2007-05-14 16:10 ` Peter Zijlstra
2007-05-14 16:37 ` Christoph Lameter
2007-05-14 16:12 ` Matt Mackall
2007-05-14 16:29 ` Christoph Lameter
2007-05-14 17:40 ` Peter Zijlstra
2007-05-14 17:57 ` Christoph Lameter
2007-05-14 19:28 ` Peter Zijlstra
2007-05-14 19:56 ` Christoph Lameter
2007-05-14 20:03 ` Peter Zijlstra
2007-05-14 20:06 ` Christoph Lameter
2007-05-14 20:12 ` Peter Zijlstra
2007-05-14 20:25 ` Christoph Lameter
2007-05-15 17:27 ` Peter Zijlstra
2007-05-15 22:02 ` Christoph Lameter
2007-05-16 6:59 ` Peter Zijlstra
2007-05-16 18:43 ` Christoph Lameter
2007-05-16 19:25 ` Peter Zijlstra
2007-05-16 19:53 ` Christoph Lameter
2007-05-16 20:18 ` Peter Zijlstra
2007-05-16 20:27 ` Christoph Lameter
2007-05-16 20:40 ` Peter Zijlstra
2007-05-16 20:44 ` Christoph Lameter
2007-05-16 20:54 ` Peter Zijlstra
2007-05-16 20:59 ` Christoph Lameter
2007-05-16 21:04 ` Peter Zijlstra
2007-05-16 21:13 ` Christoph Lameter [this message]
2007-05-16 21:20 ` Peter Zijlstra
2007-05-16 21:42 ` Christoph Lameter
2007-05-17 7:28 ` Peter Zijlstra
2007-05-17 17:30 ` Christoph Lameter
2007-05-17 17:53 ` Peter Zijlstra
2007-05-17 18:01 ` Christoph Lameter
2007-05-14 19:44 ` Andrew Morton
2007-05-14 20:01 ` Matt Mackall
2007-05-14 20:05 ` Peter Zijlstra
2007-05-17 3:02 ` Christoph Lameter
2007-05-17 7:08 ` Peter Zijlstra
2007-05-17 17:29 ` Christoph Lameter
2007-05-17 17:52 ` Peter Zijlstra
2007-05-17 17:59 ` Christoph Lameter
2007-05-17 17:53 ` Matt Mackall
2007-05-17 18:02 ` Christoph Lameter
2007-05-17 19:18 ` Peter Zijlstra
2007-05-17 19:24 ` Christoph Lameter
2007-05-17 21:26 ` Peter Zijlstra
2007-05-17 21:44 ` Paul Jackson
2007-05-17 22:27 ` Christoph Lameter
2007-05-18 9:54 ` Peter Zijlstra
2007-05-18 17:11 ` Paul Jackson
2007-05-18 17:11 ` Christoph Lameter
2007-05-20 8:39 ` Peter Zijlstra
2007-05-21 16:45 ` Christoph Lameter
2007-05-21 19:33 ` Peter Zijlstra
2007-05-21 19:43 ` Christoph Lameter
2007-05-21 20:08 ` Peter Zijlstra
2007-05-21 20:32 ` Christoph Lameter
2007-05-21 20:54 ` Peter Zijlstra
2007-05-21 21:04 ` Christoph Lameter
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