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Date: Thu, 05 Dec 2013 12:09:06 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] latency spikes under load
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To: Kurijn Buys <Kurijn.Buys@open.ac.uk>
Cc: Xenomai@xenomai.org

On 12/05/2013 01:44 AM, Kurijn Buys wrote:
>
> Op 4-dec.-2013, om 17:43 heeft Philippe Gerum het volgende geschreven:
>
>> On 12/04/2013 05:03 PM, Gilles Chanteperdrix wrote:
>>> On 12/04/2013 02:19 PM, Philippe Gerum wrote:
>>>> On 12/04/2013 01:00 PM, Gilles Chanteperdrix wrote:
>>>>> Ok, could you push the branch somewhere so that I can try it?
>>>>>
>>>>
>>>> testing/ipipe-3.8-i915-fix
>>>
>>> I could test it, I no longer get high latencies while moving a large
>>> opengl window. So, it looks good.
>
> I've it running as well (with the priority coupling option disabled this time).

The options I asked you to change were meant to eliminate any possible 
source for high latencies in case of bug. You can return to a normal 
configuration now: re-enable SMP or APIC if you prefer to remain in 
single processor mode, disable the I-pipe tracer if you want to avoid 
the overhead, and re-enable priority coupling if you prefer to use it.

-- 
					    Gilles.