From: Christoph Lameter <cl@linux.com>
To: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: [PATCH] slub: reduce overhead of slub_debug
Date: Tue, 28 Jun 2011 14:32:08 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1106281431370.27518@router.home> (raw)
In-Reply-To: <20110626193918.GA3339@joi.lan>
On Sun, 26 Jun 2011, Marcin Slusarz wrote:
> slub checks for poison one byte by one, which is highly inefficient
> and shows up frequently as a highest cpu-eater in perf top.
Ummm.. Performance improvements for debugging modes? If you need
performance then switch off debuggin.
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next prev parent reply other threads:[~2011-06-28 19:32 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 [this message]
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
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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