From: Andi Kleen <andi@firstfloor.org>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Announce] Development release 0.1 of the LatencyTOP tool
Date: Sat, 19 Jan 2008 06:07:28 +0100 [thread overview]
Message-ID: <p73lk6m9ze7.fsf@bingen.suse.de> (raw)
In-Reply-To: <4790E3A6.7060807@linux.intel.com> (Arjan van de Ven's message of "Fri\, 18 Jan 2008 09\:36\:38 -0800")
Arjan van de Ven <arjan@linux.intel.com> writes:
> The Intel Open Source Technology Center is pleased to announce the
> release of version 0.1 of LatencyTOP, a tool for developers to visualize
> system latencies.
Just for completeness -- Linux already had a way to profile latencies
since quite some time. It's little known unfortunately and doesn't
work for modules since it's a special mode in the old non modular kernel
profiler.
You enable CONFIG_SCHEDSTATS and boot with profile=sleep and then you can
use the readprofile command to read the data. Information can be reset with
echo > /proc/profile
There's also a profile=sched to profile the scheduler which works even
without CONFIG_SCHEDSTATS
Latencytop will be probably a little more user friendly though.
-Andi
next prev parent reply other threads:[~2008-01-19 5:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-18 17:36 [Announce] Development release 0.1 of the LatencyTOP tool Arjan van de Ven
2008-01-18 17:39 ` [patch 1/3] LatencyTOP infrastructure patch Arjan van de Ven
2008-01-20 11:34 ` Helge Deller
2008-01-20 16:47 ` Dmitry Adamushko
2008-01-20 17:18 ` Dmitry Adamushko
2008-01-21 8:06 ` KOSAKI Motohiro
2008-01-21 16:16 ` Arjan van de Ven
2008-01-18 17:40 ` [patch 2/3] Latencytop instrumentations part 1 Arjan van de Ven
2008-01-18 22:26 ` Frank Ch. Eigler
2008-01-18 22:33 ` Arjan van de Ven
2008-01-18 22:47 ` Arnaldo Carvalho de Melo
2008-01-18 23:11 ` Frank Ch. Eigler
2008-01-18 23:20 ` Arjan van de Ven
2008-01-18 17:42 ` [patch 3/3] LatencyTOP instrumentations part 2 Arjan van de Ven
2008-01-18 18:27 ` [Announce] Development release 0.1 of the LatencyTOP tool Roberto Fichera
2008-01-18 18:35 ` Arjan van de Ven
2008-01-18 18:46 ` Roberto Fichera
2008-01-18 19:02 ` Zan Lynx
2008-01-19 5:07 ` Andi Kleen [this message]
2008-01-19 5:16 ` Arjan van de Ven
2008-01-19 5:27 ` Andi Kleen
2008-01-19 5:25 ` Arjan van de Ven
2008-01-19 5:33 ` Andi Kleen
2008-01-19 5:34 ` Arjan van de Ven
2008-01-19 6:08 ` Andi Kleen
2008-01-19 5:37 ` [Announce] Development release 0.1 of the LatencyTOP tool II Andi Kleen
2008-01-21 0:52 ` Development release 0.1 of the LatencyTOP tool KOSAKI Motohiro
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