From: Steven Rostedt <rostedt@goodmis.org>
To: Tejun Heo <tj@kernel.org>
Cc: Roland McGrath <roland@redhat.com>,
Oleg Nesterov <oleg@redhat.com>,
jan.kratochvil@redhat.com,
Denys Vlasenko <vda.linux@googlemail.com>,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org
Subject: Re: [RFC] Proposal for ptrace improvements
Date: Thu, 10 Mar 2011 13:33:06 -0500 [thread overview]
Message-ID: <20110310183305.GD12521@home.goodmis.org> (raw)
In-Reply-To: <20110309102855.GC27010@htj.dyndns.org>
On Wed, Mar 09, 2011 at 11:28:55AM +0100, Tejun Heo wrote:
>
> If someone is looking for completely transparent light weight
> monitoring, there is a much better fitting mechanism for that and it
> works frigging well and provides much better insight into what's going
> on with the system.
>
> Use tracing for tracing.
>
Hmm, what tracing utility exactly? If I want to trace a running task,
that I have the debug info on it where I would have the ability to
insert probes, which utility would you recommend?
strace and gdb use ptrace
ftrace focuses on the kernel.
I don't think perf has a good way to trace userspace yet.
I haven't taken a good look at lttng, but I think it has some sort of
library that is attached to the process. Is there a better way than
attching a library to said task.
systemtap may have ways too, but I think it depends on utrace which has
pretty much been nak'd in the kernel.
-- Steve
next prev parent reply other threads:[~2011-03-10 18:33 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-01 15:24 Tejun Heo
2011-03-01 16:57 ` Denys Vlasenko
2011-03-01 17:09 ` Tejun Heo
2011-03-01 17:12 ` Tejun Heo
2011-03-01 17:21 ` Denys Vlasenko
2011-03-01 18:34 ` Tejun Heo
2011-03-01 23:51 ` Denys Vlasenko
2011-03-02 7:10 ` Tejun Heo
2011-03-02 5:07 ` Indan Zupancic
2011-03-02 7:44 ` Tejun Heo
2011-03-02 11:32 ` Indan Zupancic
2011-03-02 11:52 ` Denys Vlasenko
2011-03-02 14:50 ` Tejun Heo
2011-03-02 13:32 ` Oleg Nesterov
2011-03-03 0:47 ` Indan Zupancic
2011-03-03 1:30 ` Denys Vlasenko
2011-03-03 1:55 ` Indan Zupancic
2011-03-03 7:03 ` Tejun Heo
2011-03-01 19:06 ` Jan Kratochvil
2011-03-01 22:14 ` Denys Vlasenko
2011-03-02 7:28 ` Tejun Heo
2011-03-02 10:58 ` Denys Vlasenko
2011-03-04 16:14 ` Jan Kratochvil
2011-03-04 16:41 ` Denys Vlasenko
2011-03-04 17:07 ` Oleg Nesterov
2011-03-04 18:12 ` Jan Kratochvil
2011-03-05 8:47 ` Tejun Heo
2011-03-01 22:59 ` Denys Vlasenko
2011-03-02 7:32 ` Tejun Heo
2011-03-02 11:02 ` Denys Vlasenko
2011-03-02 11:23 ` Tejun Heo
2011-03-03 19:26 ` Oleg Nesterov
2011-03-01 23:16 ` Denys Vlasenko
2011-03-02 7:37 ` Tejun Heo
2011-03-02 11:21 ` Denys Vlasenko
2011-03-02 11:27 ` Tejun Heo
2011-03-02 11:48 ` Denys Vlasenko
2011-03-02 14:43 ` Tejun Heo
2011-03-02 15:16 ` Denys Vlasenko
2011-03-02 15:25 ` Tejun Heo
2011-03-03 17:34 ` Oleg Nesterov
2011-03-03 20:22 ` Oleg Nesterov
2011-03-04 8:23 ` Tejun Heo
2011-03-04 18:16 ` Oleg Nesterov
2011-03-05 8:33 ` Tejun Heo
2011-03-04 13:01 ` Denys Vlasenko
2011-03-04 13:41 ` Tejun Heo
2011-03-04 13:59 ` Denys Vlasenko
2011-03-04 14:07 ` Tejun Heo
2011-03-04 14:31 ` Denys Vlasenko
2011-03-04 14:40 ` Tejun Heo
2011-03-04 17:05 ` Denys Vlasenko
2011-03-04 17:12 ` Linus Torvalds
2011-03-04 18:59 ` Denys Vlasenko
2011-03-04 19:24 ` Linus Torvalds
2011-03-04 16:13 ` Oleg Nesterov
2011-03-04 16:30 ` Oleg Nesterov
2011-03-04 8:44 ` Tejun Heo
2011-03-04 16:01 ` Oleg Nesterov
2011-03-04 16:15 ` Tejun Heo
2011-03-04 16:26 ` Oleg Nesterov
2011-03-07 15:08 ` PTRACE_SEIZE/INTERRUPT: " Oleg Nesterov
2011-03-09 9:41 ` Tejun Heo
2011-03-09 17:30 ` Oleg Nesterov
2011-03-07 20:43 ` Roland McGrath
2011-03-09 10:28 ` Tejun Heo
2011-03-10 18:33 ` Steven Rostedt [this message]
2011-03-11 8:13 ` Tejun Heo
2011-03-11 8:22 ` Ingo Molnar
2011-03-11 9:35 ` Srikar Dronamraju
2011-03-11 9:43 ` Ingo Molnar
2011-03-14 1:03 ` Frank Ch. Eigler
2011-03-10 15:55 ` Steven Rostedt
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