Message-ID: <4B065DFB.8090909@cn.fujitsu.com>
Date: Fri, 20 Nov 2009 17:14:35 +0800
From: Li Zefan <lizf@cn.fujitsu.com>
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To: Ingo Molnar <mingo@elte.hu>
CC: Pekka Enberg <penberg@cs.helsinki.fi>,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       Frederic Weisbecker <fweisbec@gmail.com>,
       Steven Rostedt <rostedt@goodmis.org>,
       Peter Zijlstra <peterz@infradead.org>,
       Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>,
       LKML <linux-kernel@vger.kernel.org>,
       "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [RFC][PATCH 1/2] perf: Add 'perf kmem' tool
References: <4B064AF5.9060208@cn.fujitsu.com> <20091120081440.GA19778@elte.hu> <84144f020911200019p4978c8e8tc593334d974ee5ff@mail.gmail.com> <20091120083053.GB19778@elte.hu> <4B0657A4.2040606@cs.helsinki.fi> <4B06590C.7010109@cn.fujitsu.com> <20091120090353.GE19778@elte.hu>
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Ingo Molnar wrote:
> * Li Zefan <lizf@cn.fujitsu.com> wrote:
> 
>>> (2) doing "perf kmem record" on machine A (think embedded here) and 
>>> then "perf kmem report" on machine B. I haven't tried kmemtrace-user 
>>> for a while but it did support both of them quite nicely at some 
>>> point.
>> Everything needed and machine-specific will be recorded in perf.data, 
>> so this should already been supported. I'll try it.
> 
> Right now the DSOs are not recorded in the perf.data - but it would be 
> useful to add it and to turn perf.data into a self-sufficient capture of 
> all relevant data, which can be analyzed on any box.
> 

But still 'perf kmem' should function better than kmemtrace-user,
since the latter records no more than raw trace data.

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