From: Steven Rostedt <rostedt@goodmis.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Ingo Molnar" <mingo@elte.hu>, "Luck, Tony" <tony.luck@intel.com>,
linux-kernel@vger.kernel.org, ying.huang@intel.com, bp@alien8.de,
tglx@linutronix.de, akpm@linux-foundation.org,
mchehab@redhat.com, "Frédéric Weisbecker" <fweisbec@gmail.com>,
"Arnaldo Carvalho de Melo" <acme@redhat.com>,
"Arjan van de Ven" <arjan@infradead.org>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>
Subject: Re: [RFC/Requirements/Design] h/w error reporting
Date: Wed, 10 Nov 2010 14:38:31 -0500 [thread overview]
Message-ID: <1289417911.12418.187.camel@gandalf.stny.rr.com> (raw)
In-Reply-To: <1289413460.2084.27.camel@laptop>
On Wed, 2010-11-10 at 19:24 +0100, Peter Zijlstra wrote:
> There is lots of code between getting the event and landing it in the
> buffer. The buffer itself is perfectly suited for high speed low
> overhead stuffs, the perf data format possibly not because its not
> bitfield happy.
Question:
Can we make perf lower what it records, thus speeding up the amount it
records, without breaking the ABI?
Can we add flight recorder mode splice version, non mmap, without
breaking the ABI?
If we can make perf as fast as ftrace in its recording, and maybe even
faster if we have the ability to select what is recorded and compress
the events, I'm all for it.
-- Steve
next prev parent reply other threads:[~2010-11-10 19:38 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-10 0:56 Luck, Tony
2010-11-10 10:14 ` Ingo Molnar
2010-11-10 14:40 ` Steven Rostedt
2010-11-10 14:43 ` Peter Zijlstra
2010-11-10 15:09 ` Steven Rostedt
2010-11-10 15:28 ` Mathieu Desnoyers
2010-11-10 15:30 ` Peter Zijlstra
2010-11-10 15:53 ` Steven Rostedt
2010-11-10 16:52 ` Steven Rostedt
2010-11-10 17:05 ` Borislav Petkov
2010-11-10 17:41 ` Ingo Molnar
2010-11-10 17:50 ` Luck, Tony
2010-11-10 18:09 ` Steven Rostedt
2010-11-10 18:52 ` Ingo Molnar
2010-11-10 17:25 ` Frederic Weisbecker
2010-11-10 17:48 ` Ingo Molnar
2010-11-10 18:05 ` Steven Rostedt
2010-11-10 18:23 ` Luck, Tony
2010-11-10 18:31 ` Peter Zijlstra
2010-11-10 18:49 ` Ingo Molnar
2010-11-10 18:24 ` Peter Zijlstra
2010-11-10 18:41 ` Ingo Molnar
2010-11-10 19:00 ` Steven Rostedt
2010-11-10 19:11 ` Ingo Molnar
2010-11-10 19:11 ` Frederic Weisbecker
2010-11-10 19:30 ` Ingo Molnar
2010-11-10 19:48 ` Steven Rostedt
2010-11-10 20:23 ` Tracing Requirements (was: [RFC/Requirements/Design] h/w error reporting) Mathieu Desnoyers
2010-11-10 20:54 ` Luck, Tony
2010-11-10 21:06 ` Steven Rostedt
2010-11-10 21:34 ` Steven Rostedt
2010-11-10 22:51 ` Mathieu Desnoyers
2010-11-10 23:12 ` Thomas Gleixner
2010-11-10 23:20 ` Steven Rostedt
2010-11-10 23:45 ` Thomas Gleixner
2010-11-11 18:25 ` Ted Ts'o
2010-11-10 23:28 ` Mathieu Desnoyers
2010-11-10 23:58 ` Thomas Gleixner
2010-11-11 9:17 ` Ingo Molnar
2010-11-11 13:37 ` Mathieu Desnoyers
2010-11-10 21:30 ` Frederic Weisbecker
2010-11-10 21:54 ` Steven Rostedt
2010-11-10 22:19 ` Frederic Weisbecker
2010-11-10 22:49 ` Frederic Weisbecker
2010-11-11 0:11 ` Mathieu Desnoyers
2010-11-11 16:10 ` Steven Rostedt
2010-11-11 16:34 ` Mathieu Desnoyers
2010-11-10 19:16 ` [RFC/Requirements/Design] h/w error reporting Steven Rostedt
2010-11-10 19:38 ` Steven Rostedt [this message]
2010-11-10 18:27 ` Ingo Molnar
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