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Message-ID: <1348583800.3881.46.camel@twins>
Subject: Re: 20% performance drop on PostgreSQL 9.2 from kernel 3.5.3 to
 3.6-rc5 on AMD chipsets - bisected
From: Peter Zijlstra <peterz@infradead.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Borislav Petkov <bp@alien8.de>, Nikolay Ulyanitsky <lystor@gmail.com>,
        Mike Galbraith <efault@gmx.de>, linux-kernel@vger.kernel.org,
        Andreas Herrmann <andreas.herrmann3@amd.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
        Suresh Siddha <suresh.b.siddha@intel.com>
Date: Tue, 25 Sep 2012 16:36:40 +0200
In-Reply-To: <20120925132312.GG11266@suse.de>
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On Tue, 2012-09-25 at 14:23 +0100, Mel Gorman wrote:
> It crashes on boot due to the fact that you created a function-scope variable
> called sd_llc in select_idle_sibling() and shadowed the actual sd_llc you
> were interested in. 

D'0h!