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Message-ID: <20080220103940.0a0b5ce0@laptopd505.fenrus.org> Date: Wed, 20 Feb 2008 10:39:40 -0800 From: Arjan van de Ven <arjan@...radead.org> To: Peter Zijlstra <a.p.zijlstra@...llo.nl> Cc: linux-kernel@...r.kernel.org, mingo@...e.hu, sandmann@...hat.com, tglx@...x.de, hpa@...or.com Subject: Re: [PATCH] x86: add the debugfs interface for the sysprof tool On Wed, 20 Feb 2008 19:16:15 +0100 Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote: > > On Tue, 2008-02-19 at 12:37 -0800, Arjan van de Ven wrote: > > From: Soren Sandmann <sandmann@...hat.com> > > Subject: [PATCH] x86: add the debugfs interface for the sysprof tool > > > > The sysprof tool is a very easy to use GUI tool to find out where > > userspace is spending CPU time. See > > http://www.daimi.au.dk/~sandmann/sysprof/ > > for more information and screenshots on this tool. > > > > Sysprof needs a 200 line kernel module to do it's work, this > > module puts some simple profiling data into debugfs. > > What is the added value over oprofile? it actually works and is usable by humans ;) what oprofile doesn't do is the nice userland hierarchy of where cpu time is spend. (and that is also what makes it mostly useless in practice) > -- If you want to reach me at my work email, use arjan@...ux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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