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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Michael Haberler <mail17@mah.priv.at>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] i-pipe tracer on in production kernels? (was Re: Altera Cyclone V)
Date: Sat, 11 Jan 2014 13:16:49 +0100	[thread overview]
Message-ID: <52D13631.2060100@xenomai.org> (raw)
In-Reply-To: <3FA64D57-1BB1-4B4A-AB25-AC8E280105F8@mah.priv.at>

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.


  reply	other threads:[~2014-01-11 12:16 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-07 19:52 [Xenomai] Altera Cyclone V Lowell Gilbert
2014-01-07 20:25 ` Gilles Chanteperdrix
2014-01-08 22:45   ` Lowell Gilbert
2014-01-08 23:19     ` Gilles Chanteperdrix
2014-01-09 18:06       ` Lowell Gilbert
2014-01-10  0:14         ` Gilles Chanteperdrix
2014-01-14  0:15       ` Lowell Gilbert
2014-01-07 22:19 ` Charles Steinkuehler
2014-01-07 22:47   ` Gilles Chanteperdrix
2014-01-07 22:55     ` Charles Steinkuehler
2014-01-07 23:13       ` Gilles Chanteperdrix
2014-01-08  0:51         ` Charles Steinkuehler
2014-01-08  4:04           ` Charles Steinkuehler
2014-01-08  8:21             ` Gilles Chanteperdrix
2014-01-08  8:58             ` Gilles Chanteperdrix
2014-01-11 10:22           ` [Xenomai] i-pipe tracer on in production kernels? (was Re: Altera Cyclone V) Michael Haberler
2014-01-11 12:16             ` Gilles Chanteperdrix [this message]
2014-01-11 18:11             ` Gilles Chanteperdrix
2014-01-11 18:20             ` Philippe Gerum
2014-01-11 18:27               ` Gilles Chanteperdrix
2014-01-11 19:01                 ` Philippe Gerum
2014-01-11 19:11                   ` Gilles Chanteperdrix
2014-01-08  3:21     ` [Xenomai] Altera Cyclone V Lowell Gilbert

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