linux-kernel - Re: [PATCH 0/2] perf record: mmap output file

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Date:	Thu, 07 Nov 2013 07:32:44 -0700
From:	David Ahern <dsahern@...il.com>
To:	Jiri Olsa <jolsa@...hat.com>
CC:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mike Galbraith <efault@....de>,
	Stephane Eranian <eranian@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [PATCH 0/2] perf record: mmap output file - v3

On 11/7/13, 3:06 AM, Jiri Olsa wrote:
> On Wed, Nov 06, 2013 at 10:51:52AM -0700, David Ahern wrote:
>> On 11/4/13, 11:31 AM, Jiri Olsa wrote:
>>> hi,
>>> after discussion with David, sending his change
>>> updated into the new data file object.
>>>
>>> David's original post:
>>>    http://marc.info/?l=linux-kernel&m=138180575328977&w=2
>>>
>>> Here's the change:
>>>    git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>>>    perf/mmap1
>>>
>>
>> Not having any luck with these patches. Basic use case:
>>
>> perf trace record -a -- sleep 5
>> perf trace --summary
>>
>> With your patches I get a parse error. With my latest versions
>> everything works clean.
>
> hum,
> perf trace --summary seems stuck in a loop, but that's no
> different from current acme's perf/core.

D'oh. When writing the email I was trying to keep the command line small 
and in the process removed the -i /tmp/perf.data from the second 
command. Without it perf-trace runs in live mode; with it events are 
read from a file.

David

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