From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 31 May 2016 16:16:46 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Message-ID: <20160531141646.GG5951@hermes.click-hack.org>
References: <574D9B03.8080706@sigmatek.at>
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Subject: Re: [Xenomai] Performance impact after switching from 2.6.2.1 to
 2.6.4
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To: Wolfgang Netbal <wolfgang.netbal@sigmatek.at>
Cc: xenomai@xenomai.org

On Tue, May 31, 2016 at 04:09:07PM +0200, Wolfgang Netbal wrote:
> Dear all,
> 
> we have moved our application from "XENOMAI 2.6.2.1 + Linux 3.0.43" to 
> "XENOMAI 2.6.4. + Linux 3.10.53". Our target is an i.MX6DL. The system 
> is now up and running and works stable. Unfortunately we see a 
> difference in the performance. Our old combination (XENOMAI 2.6.2.1 + 
> Linux 3.0.43) was slightly faster.
> 
> At the moment it looks like that XENOMAI 2.6.4 calls 
> xnpod_schedule_handler much more often then XENOMAI 2.6.2.1 in our old 
> system.  Every call of xnpod_schedule_handler interrupts our main 
> XENOMAI task with priority = 95.
> 
> I have compared the configuration of both XENOMAI versions but did not 
> found any difference. I checked the source code (new commits) but did 
> also not find a solution.

Have you tried Xenomai 2.6.4 with Linux 3.0.43 ? In order to see
whether it comes from the kernel update or the Xenomai udpate?

-- 
					    Gilles.
https://click-hack.org