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From: Thierry Bultel <thierry.bultel@domain.hid>
To: xenomai@xenomai.org,
	Jean-Baptiste Tredez <jean-baptiste.tredez@domain.hid>,
	Nicolas Mabire <nicolas.mabire@domain.hid>
Subject: [Xenomai-help] How to interpret /proc/xenomai/stat CPU time of threads with priority 0
Date: Fri, 29 Apr 2011 11:35:17 +0200	[thread overview]
Message-ID: <4DBA8655.9050400@domain.hid> (raw)

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Hi all,

I was wondering if the displayed CPU time was, for these particular 
threads,
the only time spent in primary mode, of the total amount of time spent 
on the CPU.

I am namely currently debugging an application which has such kind of 
thread,
with a period of 50ms, and that takes up to 23% of the CPU.
That is bad, but not a real issue if that time is spent only in 
secondary mode,
but I do not know how to figure it out.
The mode switches frequency is equal to the period of my thread, since 
it uses rt_task_wait_period

I am a little bit concerned, my fear is that secondary mode time would 
be counted in the ROOT task ...
BTW, I am using version 2.5.2 (I know, it's old ;-) ).

Any help would be appreciated.

Thanks
Thierry

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             reply	other threads:[~2011-04-29  9:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-29  9:35 Thierry Bultel [this message]
2011-04-30 10:31 ` [Xenomai-help] How to interpret /proc/xenomai/stat CPU time of threads with priority 0 Philippe Gerum

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