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Date: Fri, 07 Feb 2014 14:57:21 +0100
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai] High CPU load using q_send under pSOS skin
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To: Marcel van Mierlo <marcel.vanmierlo@marel.com>, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org

On 02/07/2014 02:32 PM, Marcel van Mierlo wrote:
> - I cant see how to set T_WARNSW using the pSOS skin.
>      - I get warning that "T_FPU" redefined when including native/task.h
> and psos+/psos.h
>      - If I hack the mask by using "0x00040000" explicitly I get
> SIGXCPU: CPU time limit exceeded when calling rt_task_set_mode at runtime.

At first sight, qsend() in your test case seems to trigger a migration 
to linux mode, that might explain (part of) the overhead. Use t_mode(0, 
T_TRAPSW, &oldmode) to enable SIGXCPU.

-- 
Philippe.