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From: Jakub Nowacki <j.s.nowacki@domain.hid>
To: xenomai@xenomai.org
Subject: [Xenomai-help] Stack size of created task
Date: Wed, 13 Jul 2011 12:37:45 +0100	[thread overview]
Message-ID: <4E1D8389.7050305@domain.hid> (raw)

Hi,

I had a slight problem with freezing tasks in RTXI using Xenomai. 
Namely, task was working normally for some time and then froze, but just 
RTXI/task not the whole system. I've found that it was caused by the 
stack size of a task set to 2000B during the creation. Changing it to 0, 
i.e., automatic stack size fixed the freezing. My question is what is a 
preferred value there? Before on the list I asked about a problem with 
the stack size in the kernel being to small for switchtest to run 
properly on i7 machine. There, one of the answers was that safe bet is 
8kB for 64-bit machine. I'm not sure should I leave the stack size in 
rt_task_create to 0 or to some high value or it should be machine 
dependent? What is being put on this stack and how to determine it's 
size depending on the complexity of the task (number of vars?)?

Cheers,

Jakub



             reply	other threads:[~2011-07-13 11:37 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-13 11:37 Jakub Nowacki [this message]
2011-07-13 11:43 ` [Xenomai-help] Stack size of created task Gilles Chanteperdrix
2011-07-13 13:13   ` Jakub Nowacki
2011-07-13 18:04     ` Gilles Chanteperdrix

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