From: Christoph Hellwig <hch@infradead.org>
To: William Cohen <wcohen@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Stephane Eranian <eranian@hpl.hp.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, perfmon@napali.hpl.hp.com,
linux-ia64@vger.kernel.org, perfctr-devel@lists.sourceforge.net
Subject: Re: [Perfctr-devel] Re: quick overview of the perfmon2 interface
Date: Thu, 22 Dec 2005 17:23:03 +0000 [thread overview]
Message-ID: <20051222172303.GC6038@infradead.org> (raw)
In-Reply-To: <43AAC854.6020608@redhat.com>
On Thu, Dec 22, 2005 at 10:37:56AM -0500, William Cohen wrote:
> Both OProfile and PAPI are open source and could use such an performance
> monitoring interface.
>
> One of the problems right now is there is a patchwork of performance
> monitoring support. Each instrumentation system has its own set of
> drivers/patches. Few have support integrated into the kernel, e.g.
> OProfile. However, the OProfile driver provides only a subset of the
> performance monitoring support, system-wide sampling. The OProfile
> driver doesn't allow per-thread monitoring or stopwatch style
> measurement, which can be very useful for some performance monitoring
> applications.
What about improving oprofile then? Unlike the vtune or perfoman people
the oprofile authors have shown they actually are able to design sensible
interfaces, and oprofile has broad plattform support over most support
architectures.
next prev parent reply other threads:[~2005-12-22 17:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-19 11:31 quick overview of the perfmon2 interface Stephane Eranian
2005-12-20 10:51 ` Andrew Morton
2005-12-20 11:19 ` [Perfctr-devel] " Mikael Pettersson
2005-12-20 18:05 ` Tony Luck
2005-12-20 18:16 ` [Perfctr-devel] " Stephane Eranian
2005-12-20 23:52 ` David Gibson
2005-12-22 11:56 ` Stephane Eranian
2005-12-22 12:05 ` Christoph Hellwig
2005-12-22 15:37 ` [Perfctr-devel] " William Cohen
2005-12-22 17:23 ` Christoph Hellwig [this message]
2005-12-22 18:17 ` William Cohen
2005-12-22 18:36 ` John Reiser
2005-12-22 18:48 ` [perfmon] " Stephane Eranian
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