From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>,
Matt Mackall <mpm@selenic.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
linux-mm@kvack.org, Christoph Lameter <cl@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Nick Piggin <npiggin@suse.de>
Subject: Re: lockdep complaints in slab allocator
Date: Tue, 24 Nov 2009 13:48:14 -0800 [thread overview]
Message-ID: <20091124214814.GK6831@linux.vnet.ibm.com> (raw)
In-Reply-To: <1259097150.4531.1822.camel@laptop>
On Tue, Nov 24, 2009 at 10:12:30PM +0100, Peter Zijlstra wrote:
> On Tue, 2009-11-24 at 13:03 -0800, David Rientjes wrote:
> > On Tue, 24 Nov 2009, Peter Zijlstra wrote:
> >
> > > Merge SLQB and rm mm/sl[ua]b.c include/linux/sl[ua]b.h for .33-rc1
> > >
> >
> > slqb still has a 5-10% performance regression compared to slab for
> > benchmarks such as netperf TCP_RR on machines with high cpu counts,
> > forcing that type of regression isn't acceptable.
>
> Having _4_ slab allocators is equally unacceptable.
I completely agree. We need at least ten. ;-)
Thanx, Paul
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next prev parent reply other threads:[~2009-11-24 21:48 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 [this message]
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
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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