From: Christoph Lameter <cl@linux.com>
To: Pekka Enberg <penberg@kernel.org>
Cc: Marcin Slusarz <marcin.slusarz@gmail.com>,
Matt Mackall <mpm@selenic.com>,
LKML <linux-kernel@vger.kernel.org>,
rientjes@google.com, linux-mm@kvack.org
Subject: Re: [PATCH] slub: reduce overhead of slub_debug
Date: Thu, 7 Jul 2011 13:17:49 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1107071314320.21719@router.home> (raw)
In-Reply-To: <alpine.DEB.2.00.1107072106560.6693@tiger>
On Thu, 7 Jul 2011, Pekka Enberg wrote:
> Looks good to me. Christoph, David, ?
The reason debug code is there is because it is useless overhead typically
not needed. There is no point in optimizing the code that is not run in
production environments unless there are gross performance issues that
make debugging difficult. A performance patch for debugging would have to
cause significant performance improvements. This patch does not do that
nor was there such an issue to be addressed in the first place.
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next prev parent reply other threads:[~2011-07-07 18:17 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-26 19:39 Marcin Slusarz
2011-06-28 19:32 ` Christoph Lameter
2011-06-28 19:40 ` David Daney
2011-06-28 20:58 ` David Rientjes
2011-06-28 21:04 ` Ben Greear
2011-06-28 21:10 ` David Rientjes
2011-06-28 21:16 ` Dave Jones
2011-07-07 18:07 ` Pekka Enberg
2011-07-07 18:17 ` Christoph Lameter [this message]
2011-07-07 18:30 ` Ben Greear
2011-07-07 18:42 ` Christoph Lameter
2011-07-07 18:54 ` Ben Greear
2011-07-07 18:30 ` Matt Mackall
2011-07-07 18:52 ` Pekka Enberg
2011-07-07 18:55 ` Matt Mackall
2011-07-07 19:12 ` Christoph Lameter
2011-07-07 19:21 ` David Miller
2011-07-07 19:49 ` Pekka Enberg
2011-07-07 20:12 ` Christoph Lameter
2011-07-08 5:23 ` Andi Kleen
2011-07-08 17:41 ` Christoph Lameter
2011-07-08 5:38 ` Pekka Enberg
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