Re: [Bug 12832] New: kernel leaks a lot of memory

From: Pierre Ossman <drzeus@drzeus.cx>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"bugme-daemon@bugzilla.kernel.org"
	<bugme-daemon@bugzilla.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [Bug 12832] New: kernel leaks a lot of memory
Date: Wed, 11 Mar 2009 17:55:56 +0100	[thread overview]
Message-ID: <20090311175556.2a127801@mjolnir.ossman.eu> (raw)
In-Reply-To: <alpine.DEB.2.00.0903111022480.16494@gandalf.stny.rr.com>

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On Wed, 11 Mar 2009 10:25:10 -0400 (EDT)
Steven Rostedt <rostedt@goodmis.org> wrote:

> 
> The ring buffer is allocated at start up (although I'm thinking of making 
> it allocated when it is first used), and the allocations are done percpu. 
> 
> It allocates around 3 megs per cpu. How many CPUs were on this box?
> 

Is this per actual CPU though? Or per CONFIG_NR_CPUS? 3 MB times 64
equals roughly the lost memory. But then again, you said it was 10 MB
per CPU for 2.6.27...

Rgds
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     -- Pierre Ossman

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