From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tim Chen <tim.c.chen@linux.intel.com>
Subject: Re: Perf record premature termination
Date: Tue, 12 Feb 2013 09:07:31 -0800
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To: David Ahern <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>, Frederic Weisbecker <fweisbec@gmail.com>, Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>, linux-perf-users@vger.kernel.org, ak <ak@linux.intel.com>

On Mon, 2013-02-11 at 15:30 -0700, David Ahern wrote:
> On 2/11/13 3:15 PM, Tim Chen wrote:
> > On Mon, 2013-02-11 at 12:34 -0700, David Ahern wrote:
> >> On 2/11/13 11:50 AM, Tim Chen wrote:
> >>> David,
> >>>
> >>> When I am doing a profiling of kernel compile with 32 threads on a 4
> >>> socket westmere machine, I found that perf record terminated right away
> >>> for the version of perf in 3.7 kernel source tree.
> >>> There's no profile data recroded and the compile is running in
> >>> background.
> >>>
> >>> $ make -j32 &
> >>> then
> >>> $ sudo /test/perf record -a -g -f sleep 5
> >>> sleep: Terminated
> 
> This is the more appropriate fix. Make mmap consistent with comm. Revert 
> the other one.

Thanks.  Works for me.

Tim