On Fri, Jun 14, 2013 at 09:45:17AM +0200, Stanislav Meduna wrote:
> On 14.06.2013 07:18, Lars Segerlund wrote:
>
> > I have an application which should be realtime but apparently
> > generates page faults from a realtime context, I am trying to find a
> > way to get a stacktrace when this occurs, does anybody have any ideas
> > ?
>
[..]
>
> Basic questions:
>
> - do you call mlockall(MCL_CURRENT | MCL_FUTURE) _before_ your
> threads are started?
>
> - do the faulting threads allocate memory?
>
> - do the faulting threads call kernel functions that might allocate memory?
Throwing in an additional question here that recently bit us:
- does your application make use of fork(), popen(), daemon(), or any
other call which under-the-hood invokes clone() with CLONE_VM not set?
Josh
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