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From: Matt Mackall <mpm@selenic.com>
To: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
	Peter Zijlstra <peterz@infradead.org>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	linux-mm@kvack.org, Christoph Lameter <cl@linux-foundation.org>,
	linux-kernel@vger.kernel.org, Nick Piggin <npiggin@suse.de>
Subject: Re: lockdep complaints in slab allocator
Date: Wed, 25 Nov 2009 17:06:47 -0600	[thread overview]
Message-ID: <1259190407.2858.61.camel@calx> (raw)
In-Reply-To: <alpine.DEB.2.00.0911251356130.11347@chino.kir.corp.google.com>

On Wed, 2009-11-25 at 13:59 -0800, David Rientjes wrote:
> On Tue, 24 Nov 2009, Matt Mackall wrote:
> 
> > I'm afraid I have only anecdotal reports from SLOB users, and embedded
> > folks are notorious for lack of feedback, but I only need a few people
> > to tell me they're shipping 100k units/mo to be confident that SLOB is
> > in use in millions of devices.
> > 
> 
> It's much more popular than I had expected; do you think it would be 
> possible to merge slob's core into another allocator or will it require 
> seperation forever?

Probably not. It's actually a completely different kind of allocator
than the rest as it doesn't actually use "slabs" at all. It's instead a
slab-like interface on a traditional heap allocator. SLAB/SLUB/SLQB have
much more in common - their biggest differences are about their approach
to scalability/locking issues.

On the upside, SLOB is easily the simplest of the bunch.

-- 
http://selenic.com : development and support for Mercurial and Linux


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  reply	other threads:[~2009-11-25 23:10 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-18 18:12 Paul E. McKenney
2009-11-20  6:49 ` Pekka Enberg
2009-11-20  9:25   ` Peter Zijlstra
2009-11-20 10:38     ` Pekka Enberg
2009-11-20 10:52       ` Peter Zijlstra
2009-11-20 11:05         ` Pekka Enberg
2009-11-20 14:48           ` Paul E. McKenney
2009-11-20 15:17             ` Peter Zijlstra
2009-11-20 16:25               ` Paul E. McKenney
2009-11-20 15:09           ` Peter Zijlstra
2009-11-23 19:00             ` Pekka Enberg
2009-11-23 19:10               ` Matt Mackall
2009-11-23 19:13                 ` Pekka Enberg
2009-11-24 16:33                   ` Peter Zijlstra
2009-11-24 17:00                     ` Paul E. McKenney
2009-11-24 17:12                       ` Matt Mackall
2009-11-24 17:58                         ` Paul E. McKenney
2009-11-24 18:14                         ` Peter Zijlstra
2009-11-24 18:25                           ` Paul E. McKenney
2009-11-24 18:31                             ` Peter Zijlstra
2009-11-24 18:53                               ` Christoph Lameter
2009-11-24 18:54                               ` Paul E. McKenney
2009-11-24 19:23                           ` Matt Mackall
2009-11-24 19:50                             ` Paul E. McKenney
2009-11-24 20:46                             ` Peter Zijlstra
2009-11-24 20:53                               ` Matt Mackall
2009-11-24 21:01                                 ` Peter Zijlstra
2009-11-24 21:03                                   ` David Rientjes
2009-11-24 21:12                                     ` Peter Zijlstra
2009-11-24 21:19                                       ` Pekka Enberg
2009-11-24 21:22                                       ` David Rientjes
2009-11-24 21:35                                         ` Peter Zijlstra
2009-11-24 21:46                                           ` David Rientjes
2009-11-24 22:23                                             ` Paul E. McKenney
2009-11-25  7:12                                               ` Pekka Enberg
2009-11-25  7:25                                           ` Pekka Enberg
2009-11-27 17:22                                             ` Christoph Lameter
2009-11-24 21:48                                       ` Paul E. McKenney
2009-11-24 21:16                                   ` Pekka Enberg
2009-11-24 21:07                             ` Pekka Enberg
2009-11-24 22:55                               ` Matt Mackall
2009-11-25 21:59                                 ` David Rientjes
2009-11-25 23:06                                   ` Matt Mackall [this message]
2009-11-27 17:28                                   ` Christoph Lameter
2009-11-30 23:14                                     ` David Rientjes
2009-12-01  0:21                                       ` Matt Mackall
2009-12-01 22:41                                         ` David Rientjes
2009-12-01 16:47                                       ` Christoph Lameter
2009-11-27 17:26                               ` Christoph Lameter
2009-11-23 19:30               ` Christoph Lameter
2009-11-23 19:43                 ` Paul E. McKenney
2009-11-23 19:50                 ` Pekka Enberg
2009-11-23 20:01                   ` Pekka Enberg
2009-11-23 20:57                     ` Paul E. McKenney
2009-11-23 21:01                     ` Matt Mackall
2009-11-24 16:23               ` Paul E. McKenney
2009-11-24 20:59                 ` Pekka Enberg
2009-11-24 21:26                   ` Peter Zijlstra
2009-11-25 10:42                     ` Pekka Enberg
2009-11-24 21:47                   ` Paul E. McKenney
2009-11-30 16:18                     ` Paul E. McKenney

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