From: Avi Kivity <avi@redhat.com>
To: Tom Zanussi <tzanussi@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@elte.hu>, "Ted Ts'o" <tytso@mit.edu>,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
Arjan van de Ven <arjan@infradead.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Li Zefan <lizf@cn.fujitsu.com>, Jason Baron <jbaron@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Christoph Hellwig <hch@lst.de>, Pekka Enberg <penberg@kernel.org>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [ANNOUNCE] New utility: 'trace'
Date: Wed, 17 Nov 2010 17:55:57 +0200 [thread overview]
Message-ID: <4CE3FB0D.30902@redhat.com> (raw)
In-Reply-To: <1290008466.1921.21.camel@elnicho>
On 11/17/2010 05:41 PM, Tom Zanussi wrote:
>
>> The only reason why these filters might make sense is to reduce the
>> trace volume on system wide traces in production environments, but
>> that's a completely different story. These scenarios can do with the
>> dynamic tracepoint stuff and the custom filtering w/o putting the
>> burden on the majority of users.
>>
> Yeah, in my mind, the main point of the filters was to be a 'blunt
> force' instrument preventing userspace from being overwhelmed by events.
> The real filtering would happen in userspace with e.g. real scripting
> languages.
>
Filtering is also useful for fine-grained perf events; this cannot be
done in userspace.
next prev parent reply other threads:[~2010-11-17 15:57 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 21:04 [ANNOUNCE] New utility: 'trace' Thomas Gleixner
2010-11-16 21:27 ` Darren Hart
2010-11-16 21:59 ` Ingo Molnar
2010-11-16 22:03 ` Peter Zijlstra
2010-11-16 22:08 ` Ingo Molnar
2010-11-16 22:09 ` Darren Hart
2010-11-16 22:48 ` Darren Hart
2010-11-16 22:07 ` Darren Hart
2010-11-16 22:17 ` Frederic Weisbecker
2010-11-17 8:30 ` Ingo Molnar
2010-11-17 11:35 ` Peter Zijlstra
2010-11-17 12:53 ` Frederic Weisbecker
2010-11-17 13:02 ` Peter Zijlstra
2010-11-17 13:10 ` Ingo Molnar
2010-11-17 13:36 ` Peter Zijlstra
2010-11-17 13:43 ` Frederic Weisbecker
2010-11-17 13:53 ` Peter Zijlstra
2010-11-17 14:10 ` Frederic Weisbecker
2010-11-17 15:02 ` Steven Rostedt
2010-11-17 18:13 ` Ted Ts'o
2010-11-17 18:29 ` Frederic Weisbecker
2010-11-17 18:30 ` Darren Hart
2010-11-17 16:49 ` Darren Hart
2010-11-18 23:23 ` Joe Perches
2010-11-16 21:35 ` Ingo Molnar
2010-11-17 1:37 ` Ted Ts'o
2010-11-17 1:47 ` Steven Rostedt
2010-11-17 3:16 ` Ted Ts'o
2010-11-17 3:34 ` Steven Rostedt
2010-11-17 19:00 ` Bob Copeland
2010-11-17 13:24 ` Ingo Molnar
2010-11-17 13:38 ` Peter Zijlstra
2010-11-17 14:00 ` Ingo Molnar
2010-11-17 14:11 ` Peter Zijlstra
2010-11-17 14:18 ` Peter Zijlstra
2010-11-17 14:37 ` Thomas Gleixner
2010-11-17 14:41 ` Peter Zijlstra
2010-11-17 15:41 ` Tom Zanussi
2010-11-17 15:55 ` Avi Kivity [this message]
2010-11-17 15:58 ` Thomas Gleixner
2010-11-17 16:20 ` Avi Kivity
2010-11-17 15:59 ` Peter Zijlstra
2010-11-17 16:08 ` Avi Kivity
2010-11-17 15:10 ` Steven Rostedt
2010-11-17 15:43 ` Peter Zijlstra
2010-11-17 16:04 ` Steven Rostedt
2010-11-17 16:15 ` Steven Rostedt
2010-11-17 19:40 ` Darren Hart
2010-11-17 18:23 ` Mathieu Desnoyers
2010-11-18 5:58 ` Masami Hiramatsu
2010-11-18 6:00 ` Masami Hiramatsu
2010-11-17 15:33 ` Tom Zanussi
2010-11-17 18:36 ` Mathieu Desnoyers
2010-11-17 18:53 ` Tom Zanussi
2010-11-17 19:02 ` Mathieu Desnoyers
2010-11-17 19:25 ` Tom Zanussi
2010-11-17 19:25 ` Steven Rostedt
2010-11-17 9:49 ` Philipp Marek
[not found] ` <4CE38C53.8090606@kernel.org>
2010-11-17 12:07 ` [patch] trace: Add user-space event tracing/injection Ingo Molnar
2010-11-17 12:17 ` Pekka Enberg
2010-11-17 12:30 ` Ingo Molnar
2010-11-17 12:33 ` Pekka Enberg
2010-11-17 12:42 ` Peter Zijlstra
2010-11-17 12:58 ` Ingo Molnar
2010-11-17 13:09 ` Peter Zijlstra
2010-11-17 13:36 ` Ingo Molnar
2010-11-17 12:24 ` Ingo Molnar
2010-11-17 12:30 ` Pekka Enberg
2010-11-17 12:29 ` Peter Zijlstra
2010-11-17 12:37 ` Peter Zijlstra
2010-11-17 13:10 ` Frederic Weisbecker
2010-11-17 13:31 ` Peter Zijlstra
2010-11-17 13:33 ` Frederic Weisbecker
2010-11-18 1:18 ` Darren Hart
2010-11-18 8:55 ` Ingo Molnar
2010-11-18 16:25 ` hp
2010-11-18 18:56 ` Ingo Molnar
2010-11-18 19:13 ` AW: " Reichert, Hans-Peter
2010-11-18 17:06 ` Darren Hart
2010-11-17 12:47 ` [ANNOUNCE] New utility: 'trace' Török Edwin
2010-11-17 12:51 ` Peter Zijlstra
2010-11-17 13:05 ` Török Edwin
2010-11-17 13:10 ` Peter Zijlstra
2010-11-17 13:32 ` Frederic Weisbecker
2010-11-18 0:47 ` Ian Munsie
[not found] ` <20101118151141.GA3368@redhat.com>
2010-11-19 2:32 ` Ian Munsie
2010-11-19 15:23 ` Jason Baron
[not found] ` <4CECACF9.3080907@linux.vnet.ibm.com>
[not found] ` <4CFD7182.4060206@linux.vnet.ibm.com>
2010-12-07 4:03 ` PowerPC, ftrace: Add PPC raw syscall tracepoints & ftrace fixes Ian Munsie
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