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Date: Sat, 30 Jun 2012 18:52:01 +0200
From: Christophe Blaess <mailist@logilin.fr>
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Subject: Re: [Xenomai] question: XENO_OPT_TIMING_SCHEDLAT
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On 30/06/2012 12:44, Gilles Chanteperdrix wrote:
>
>> /proc/xenomai/latency is an estimation of the minimum scheduling latency
>> on your system. In order to know what to put there you should do:
>>
>> echo 0 > /proc/xenomai/latency
>>
>> Run latency under load for several hour

Is it necessary to run the test under heavy load?
We're looking for the minimal latency, not the worst.

I thought that in this case a normal, even light load would be sufficient.

>>
>> echo minimum_latency > /proc/xenomai/latency
>>
>> The value put there is then subtracted to timers deadline, so that
>> timers wake up a little bit early to compensate for the time it takes to
>> return to user-space.
>>