[LITMUS^RT] Is litmus PSN-EDF compatible with taskset? -- Sisu

[Sisu Xi]

Hi, Björn:

I already fixed this.   It is very clear in the base_task.c comments.

Thanks!

Sisu


On Thu, Oct 17, 2013 at 2:32 AM, Björn Brandenburg <bbb at mpi-sws.org> wrote:

>
> On Oct 16, 2013, at 9:50 PM, Sisu Xi <xisisu at gmail.com> wrote:
>
> > just found out how to do that in base_task.
> >
> > fyi, if i try it with
> > taskset 0x01 base_task ...
> > it will quit.
> >
> > Thanks anyway.
> >
> > Sisu
> >
> >
> > On Wed, Oct 16, 2013 at 11:28 AM, Sisu Xi <xisisu at gmail.com> wrote:
> > Hi, all:
> >
> > I am doing experiments on Litmus^RT, where we plan to use the
> partitioned EDF in it.
> >
> > Usually how do you pin the task to cores?
> >
> > I know in Linux we can use sched_setaffinity within the program, or we
> can use taskset utility to achieve that.
> >
> > Is Limtus^RT base_task compatible with both of them? Or do you have some
> litmus api for doing that?
> >
> > Thanks very much and looking forward to your reply!
>
> Dear Sisu,
>
> LITMUS^RT's PSN-EDF plugin will admit tasks  only if they are already
> pinned to the correct CPU. You should use Linux's standard methods for
> moving tasks to a specific processor before transitioning into real-time
> mode. liblitmus provides a bunch of convenience wrappers for this (have a
> look at migrate.h). For example, be_migrat_to_cpu(123) would migrate your
> task to processor 123 and pin it there.
>
> If you run into any issues in your experiments, please let us know.
>
> Best regards,
> Björn
>
>
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>



-- 
Sisu Xi, PhD Candidate

http://www.cse.wustl.edu/~xis/
Department of Computer Science and Engineering
Campus Box 1045
Washington University in St. Louis
One Brookings Drive
St. Louis, MO 63130
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