How do I raise the priority of one thread in a multi-threaded process?

How do I raise the priority of one thread in a multi-threaded process?

[Alan Stern]

Can anyone tell me how to raise the priority of one thread in a
multi-threaded process (using the pthreads library)?  Neither nice(2)
nor setpriority(2) is appropriate since they affect the priority of an
entire process rather than a single thread.

Thanks,

Alan Stern

Re: How do I raise the priority of one thread in a multi-threaded process?

[Michal Hocko]

On Thursday 21 August 2008 12:58:46 pm Alan Stern wrote:
> Can anyone tell me how to raise the priority of one thread in a
> multi-threaded process (using the pthreads library)?  Neither nice(2)
> nor setpriority(2) is appropriate since they affect the priority of an
> entire process rather than a single thread.

Isn't pthread_setschedprio, what you are looking for?

>
> Thanks,
>
> Alan Stern
>
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-- 
Michal Hocko
L3 team 
SUSE LINUX s.r.o.
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Czech Republic

Re: How do I raise the priority of one thread in a multi-threaded process?

[Alan Stern]

On Thu, 21 Aug 2008, Michal Hocko wrote:

> On Thursday 21 August 2008 12:58:46 pm Alan Stern wrote:
> > Can anyone tell me how to raise the priority of one thread in a
> > multi-threaded process (using the pthreads library)?  Neither nice(2)
> > nor setpriority(2) is appropriate since they affect the priority of an
> > entire process rather than a single thread.
> 
> Isn't pthread_setschedprio, what you are looking for?

Actually I was looking for pthread_setschedparam().  But it wasn't 
clear at first that I needed to change the policy to SCHED_FIFO and 
that special capabilities were needed.  With those changes it seems to 
work correctly.

Thanks for pointing me in the right direction!

Alan Stern