From: fche@redhat.com (Frank Ch. Eigler)
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/7] Simple Performance Counters: Core Piece
Date: 31 Jul 2007 21:30:27 -0400 [thread overview]
Message-ID: <y0m7iog6nyk.fsf@ton.toronto.redhat.com> (raw)
In-Reply-To: <11859243123373-git-send-email-clameter@sgi.com>
Christoph Lameter <clameter@sgi.com> writes:
> Simple performance counters are a way to measure the performance on
> code paths in the Linux kernel. Code must be instrumented with calls
> that signal the start and the stop of a measurement. [...]
For what it's worth, this kind of measurement widget could be usefully
recast as a pure client of the lttng/systemtap markers that Mathieu is
still working on. Instead of the custom pc_start/pc_stop functions,
you would have generic markers to identify the start/end spots, and a
bit of callback code to compute/export the statistics to procfs.
- FChE
next prev parent reply other threads:[~2007-08-01 1:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-31 23:25 Christoph Lameter
2007-08-01 1:30 ` Frank Ch. Eigler [this message]
2007-08-17 16:42 ` Mathieu Desnoyers
2007-08-17 20:42 ` Christoph Lameter
2007-08-18 3:25 ` Mathieu Desnoyers
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