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Date: Wed, 28 May 2014 19:56:55 -0700
From: Andi Kleen <ak@linux.intel.com>
To: Dave Hansen <dave.hansen@intel.com>
Cc: Stephane Eranian <eranian@google.com>, LKML <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, "mingo@elte.hu" <mingo@elte.hu>,
        "Yan, Zheng" <zheng.z.yan@intel.com>
Subject: Re: [RFC] perf/x86: PMU IRQ handler issues
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> actual numbers describing the issues that you're seeing, including the
> ftrace that Andi was asking for?  There are also some handy tracepoints
> for NMI lengths that I stuck in.

Another good thing would be to plot the periods (from perf report -D)

-Andi