Context Switching measurement RTEMS

[Sebastian Huber]

Hello Babacar,

what is your definition of "context switching time"? To measure short 
time intervals with little overhead, you can use the 
rtems_counter_read() function (not supported on all BSPs).

The tmcontext01 test measures the low-level context switch time. To get 
some samples for the thread dispatch time, you can enable profiling 
(--enable-profiling configure command line option) and use the test 
suite. Collect the output of all the tests and filter out the non-XML 
data (filter-test-xml.py). Then you can use this XML file to get some 
statistics (e.g. boxplot.py).

On 07/09/16 22:10, Babacar Diop wrote:
>
> Dear devels,
>
> I am using a multithreaded task and I would like to measure the 
> context switching time.
>
> Do you have any idea on how to do this ?
>
> Kind Regards
> ------------------------------------------------------------------------------------------------------------------------
>
> Babacar Diop
> 23 ans
> Élève ingénieur à Polytech' Paris-UPMC
> Section Électronique, Informatique des Systèmes Embarqués
> Année 5
>
>
>
> _______________________________________________
> devel mailing list
> devel at rtems.org
> http://lists.rtems.org/mailman/listinfo/devel

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  :sebastian.huber at embedded-brains.de
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