Date: Tue, 3 Mar 2009 22:01:00 -0500 (EST)
From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>,
       Peter Zijlstra <peterz@infradead.org>,
       Frederic Weisbecker <fweisbec@gmail.com>, Theodore Tso <tytso@mit.edu>,
       Arjan van de Ven <arjan@infradead.org>, Pekka Paalanen <pq@iki.fi>,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       "H. Peter Anvin" <hpa@zytor.com>,
       Mathieu Desnoyers <compudj@krystal.dyndns.org>,
       Martin Bligh <mbligh@google.com>, "Frank Ch. Eigler" <fche@redhat.com>,
       Tom Zanussi <tzanussi@gmail.com>,
       Masami Hiramatsu <mhiramat@redhat.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       Jason Baron <jbaron@redhat.com>, Christoph Hellwig <hch@infradead.org>,
       Jiaying Zhang <jiayingz@google.com>,
       Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>,
       mrubin@google.com, md@google.com
Subject: Re: [PATCH 0/5] [RFC] binary reading of ftrace ring buffers
In-Reply-To: <20090304024921.153061228@goodmis.org>
Message-ID: <alpine.DEB.2.00.0903032200260.5939@gandalf.stny.rr.com>
References: <20090304024921.153061228@goodmis.org>
User-Agent: Alpine 2.00 (DEB 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1141
Lines: 29


On Tue, 3 Mar 2009, Steven Rostedt wrote:

> Yes you can run multiple instances of this on different buffers.
> 
>  # ./rb-read.pl /tmp/buf-0
> 
> produces:
> 
>         0  [000]  7071.936459: (irq_handler_entry) irq 48
>         0  [000]  7071.936462: (irq_handler_exit) irq 48 ret 1
>         0  [000]  7071.988801: (sched_signal_send) sig: 14  task 0
>         0  [000]  7071.988813: (sched_wakeup) task 0 success=1
>         0  [000]  7071.988823: (sched_switch) prev 0:140 ==> next ntpd:6582272:0
>      3303  [000]  7071.988916: (sched_switch) prev 0:120 ==> next swap:7497072:0
>         0  [000]  7072.020370: (sched_wakeup) task 0 success=1
>         0  [000]  7072.020407: (sched_switch) prev 0:140 ==> next even:808416116:0

My perl script is still a bit buggy, but you get the idea ;-)

-- Steve

>        16  [000]  7071.936157: (sched_switch) prev 0:115 ==> next swap:7497072:0
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/