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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: davide doninelli <davide.doninelli@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] process on linux
Date: Fri, 01 Apr 2011 11:32:05 +0200	[thread overview]
Message-ID: <4D959B95.4060006@domain.hid> (raw)
In-Reply-To: <A537C502-9185-43A0-999B-A2DB8583008E@edu.hefr.ch>

davide doninelli wrote:
> Hi 
> i see in linux proces 3 xenomai processes per xenomai RT task .
> I don't understand what are the first 2 process.
> Is that right? What are used for? Tasks are like in envelope?
> i don't find information about that.
> 
> #ps
> ....
>  483 root     ./interrupt_xeno_userspacen 
>   484 root     ./interrupt_xeno_userspacen 
>   485 root     ./interrupt_xeno_userspacen 

With the quantity of information you give us, we can only guess, but you
probably use a linuxthreads based libc, so:
- each thread appears as an entry in ps output
- there is a "manager" thread called when creating the first thread.

So, 483 is probably the main thread, 484 the manager thread, 485 is the
"mytask" thread.

Still guessing, I think you are confusing 2 + N with 3 * N, because you
only tested with N == 1.

-- 
					    Gilles.


  reply	other threads:[~2011-04-01  9:32 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-01  8:46 [Xenomai-help] process on linux davide doninelli
2011-04-01  9:32 ` Gilles Chanteperdrix [this message]
2011-04-01  9:52   ` davide doninelli
2011-04-01  9:58     ` Gilles Chanteperdrix

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