From: Peter Zijlstra <peterz@infradead.org>
To: Harald Gustafsson <hgu1972@gmail.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Harald Gustafsson <harald.gustafsson@ericsson.com>,
Song Yuan <song.yuan@ericsson.com>
Subject: Re: perf events over (net) console?
Date: Thu, 09 Sep 2010 13:19:01 +0200 [thread overview]
Message-ID: <1284031141.402.1.camel@laptop> (raw)
In-Reply-To: <AANLkTi=yeHyOeewm9tdsHRtj+=d+vE5=NRKGaPyq_yGH@mail.gmail.com>
On Thu, 2010-09-09 at 13:06 +0200, Harald Gustafsson wrote:
> Hi,
>
> We would like to monitor the perf events continuously on a remote
> machine. Does it exist a solution (in the kernel) to direct the output
> to a console or maybe even a netconsole? We would like to avoid a user
> space application to transfer it, due to that the machine will be
> running a test which will heavily load it and we want to avoid as many
> unrelated user space tasks as possible. If not mainlined does anyone
> have a patch for this?
No, and its a daft requirement.
You need a process context anyway to read the data and send it to
whatever place you want it.
Putting that in-kernel serves no purpose what so ever.
next prev parent reply other threads:[~2010-09-09 11:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-09 11:06 perf events over (net) console? Harald Gustafsson
2010-09-09 11:19 ` Peter Zijlstra [this message]
2010-09-09 11:29 ` Frederic Weisbecker
2010-09-09 11:35 ` Peter Zijlstra
2010-09-09 11:40 ` Frederic Weisbecker
2010-09-09 11:40 ` Ingo Molnar
2010-09-09 12:31 ` Harald Gustafsson
2010-09-09 12:47 ` Peter Zijlstra
2010-09-09 13:07 ` Ingo Molnar
2010-09-09 13:21 ` Frederic Weisbecker
2010-09-09 14:41 ` Arnaldo Carvalho de Melo
2010-09-09 17:42 ` Harald Gustafsson
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