linux-kernel - Ftrace and Systemtap

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Date:	Wed, 31 Mar 2010 18:36:08 +0100
From:	swb6@...r.ac.uk
To:	linux-kernel@...r.kernel.org
Subject: Ftrace and Systemtap

Hi,
I am currently writing up my
dissertation based on dynamic tracing and reducing the learning curve to
understanding the UNIX kernel. I used two dynamic tracing technologies
(Systemtap and Dtrace) to monitor some virtual machines on a network.
Whilst going over my initial review of technologies in the area of dynamic
tracing I realised I had underestimated ftrace, and even dismissed it as
not being dynamic. However I read hear (http://lwn.net/Articles/343766/)
that you were as of July last year trying to introduce a patch that would
allow ftrace the ability to dynamically trace. Also it would be completely
instrumented from the command line without the need to compile a kernel
module al la Systemtap.

My question is do you think Systemtap will be replaced by ftrace in the
future if so I feel I may need to include this fact in my updated
technology review.

Than you for your time
Steve Brown

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