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Date: Sat, 11 Jan 2014 13:16:49 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] i-pipe tracer on in production kernels? (was Re:
 Altera Cyclone V)
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To: Michael Haberler <mail17@mah.priv.at>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On 01/11/2014 11:22 AM, Michael Haberler wrote:
> 
> http://www.xenomai.org/index.php/I-pipe:Tracer describes the trace
> API, which could be useful to track down issues
> 
> Q: does enabling the tracer incur significant overhead if compiled in
> but unused, or is it reasonable to leave it on in a production
> kernel?

You should run some tests to answer that question: measure the latency
with tracer compiled-in but not enabled, and with tracer completely
disabled. I would expect to see a difference between the two
configurations, but I do not know if it would be very significant.

-- 
                                                                Gilles.