From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Ingo Molnar <mingo@elte.hu>
Cc: Li Zefan <lizf@cn.fujitsu.com>,
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
Date: Fri, 20 Nov 2009 12:31:35 +0200 [thread overview]
Message-ID: <4B067007.8070607@cs.helsinki.fi> (raw)
In-Reply-To: <20091120101305.GA16781@elte.hu>
Ingo Molnar kirjoitti:
> * Pekka Enberg <penberg@cs.helsinki.fi> wrote:
>
>> Hi Ingo,
>>
>> On Fri, Nov 20, 2009 at 11:01 AM, Ingo Molnar <mingo@elte.hu> wrote:
>>> But ... even without that, perf is really fast and is supposed to build
>>> fine even in minimal (embedded) environments, so you can run it on the
>>> embedded board too. That's useful to get live inspection features like
>>> 'perf top', 'perf stat' and 'perf probe' anyway.
>> Maybe I'm just too damn lazy but if I don't go through the trouble of
>> building my kernel on the box, I sure don't want to do that for perf
>> either. [...]
>
> Well you'll need 'perf' on that box anyway, to be able to do 'perf kmem
> record'.
/me turns brains on
You're right, of course. With kmemtrace-user, I just copied the raw
trace file from /sys/kernel. I wonder if that's a good enough reason to
keep kmemtrace bits around?
Pekka
WARNING: multiple messages have this Message-ID (diff)
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Ingo Molnar <mingo@elte.hu>
Cc: Li Zefan <lizf@cn.fujitsu.com>,
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
Date: Fri, 20 Nov 2009 12:31:35 +0200 [thread overview]
Message-ID: <4B067007.8070607@cs.helsinki.fi> (raw)
In-Reply-To: <20091120101305.GA16781@elte.hu>
Ingo Molnar kirjoitti:
> * Pekka Enberg <penberg@cs.helsinki.fi> wrote:
>
>> Hi Ingo,
>>
>> On Fri, Nov 20, 2009 at 11:01 AM, Ingo Molnar <mingo@elte.hu> wrote:
>>> But ... even without that, perf is really fast and is supposed to build
>>> fine even in minimal (embedded) environments, so you can run it on the
>>> embedded board too. That's useful to get live inspection features like
>>> 'perf top', 'perf stat' and 'perf probe' anyway.
>> Maybe I'm just too damn lazy but if I don't go through the trouble of
>> building my kernel on the box, I sure don't want to do that for perf
>> either. [...]
>
> Well you'll need 'perf' on that box anyway, to be able to do 'perf kmem
> record'.
/me turns brains on
You're right, of course. With kmemtrace-user, I just copied the raw
trace file from /sys/kernel. I wonder if that's a good enough reason to
keep kmemtrace bits around?
Pekka
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next prev parent reply other threads:[~2009-11-20 10:31 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 7:53 [RFC][PATCH 1/2] perf: Add 'perf kmem' tool Li Zefan
2009-11-20 7:53 ` Li Zefan
2009-11-20 7:53 ` [PATCH 2/2] tracing: Remove kmemtrace tracer Li Zefan
2009-11-20 7:53 ` Li Zefan
2009-11-20 8:20 ` Pekka Enberg
2009-11-20 8:20 ` Pekka Enberg
2009-11-20 8:24 ` Li Zefan
2009-11-20 8:24 ` Li Zefan
2009-11-20 8:27 ` Pekka Enberg
2009-11-20 8:27 ` Pekka Enberg
2009-11-20 8:31 ` Li Zefan
2009-11-20 8:31 ` Li Zefan
2009-11-20 8:14 ` [RFC][PATCH 1/2] perf: Add 'perf kmem' tool Ingo Molnar
2009-11-20 8:14 ` Ingo Molnar
2009-11-20 8:19 ` Pekka Enberg
2009-11-20 8:19 ` Pekka Enberg
2009-11-20 8:30 ` Ingo Molnar
2009-11-20 8:30 ` Ingo Molnar
2009-11-20 8:47 ` Pekka Enberg
2009-11-20 8:47 ` Pekka Enberg
2009-11-20 8:53 ` Li Zefan
2009-11-20 8:53 ` Li Zefan
2009-11-20 9:03 ` Ingo Molnar
2009-11-20 9:03 ` Ingo Molnar
2009-11-20 9:14 ` Li Zefan
2009-11-20 9:14 ` Li Zefan
2009-11-20 14:42 ` Arnaldo Carvalho de Melo
2009-11-20 14:42 ` Arnaldo Carvalho de Melo
2009-11-20 16:41 ` Ingo Molnar
2009-11-20 16:41 ` Ingo Molnar
2009-11-20 17:52 ` Arnaldo Carvalho de Melo
2009-11-20 17:52 ` Arnaldo Carvalho de Melo
2009-11-23 6:51 ` Ingo Molnar
2009-11-23 6:51 ` Ingo Molnar
2009-11-23 7:22 ` Peter Zijlstra
2009-11-23 7:22 ` Peter Zijlstra
2009-11-23 7:33 ` Ingo Molnar
2009-11-23 7:33 ` Ingo Molnar
2009-11-23 14:37 ` Arnaldo Carvalho de Melo
2009-11-23 14:37 ` Arnaldo Carvalho de Melo
2009-11-23 14:32 ` Arnaldo Carvalho de Melo
2009-11-23 14:32 ` Arnaldo Carvalho de Melo
2009-11-20 9:01 ` Ingo Molnar
2009-11-20 9:01 ` Ingo Molnar
2009-11-20 9:15 ` Pekka Enberg
2009-11-20 9:15 ` Pekka Enberg
2009-11-20 10:13 ` Ingo Molnar
2009-11-20 10:13 ` Ingo Molnar
2009-11-20 10:31 ` Pekka Enberg [this message]
2009-11-20 10:31 ` Pekka Enberg
2009-11-20 10:49 ` Ingo Molnar
2009-11-20 10:49 ` Ingo Molnar
2009-11-23 14:46 ` Steven Rostedt
2009-11-23 14:46 ` Steven Rostedt
2009-11-23 17:53 ` Ingo Molnar
2009-11-23 17:53 ` Ingo Molnar
2009-11-20 8:20 ` Li Zefan
2009-11-20 8:20 ` Li Zefan
2009-11-20 8:54 ` [tip:perf/core] " tip-bot for Li Zefan
2009-11-20 8:54 ` tip-bot for Li Zefan
2009-11-20 8:55 ` [RFC][PATCH 1/2] " Ingo Molnar
2009-11-20 8:55 ` Ingo Molnar
2009-11-20 9:11 ` Li Zefan
2009-11-20 9:11 ` Li Zefan
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