Subj : Re: Binding a thread to particular processor Linux
To   : comp.programming.threads
From : doug
Date : Wed Mar 23 2005 06:14 pm

To answer my own question, sched_setaffinity allows you to set processor 
affinity.  I've managed to find object code on a 2.4 system with this 
function, and it seems to work.

It also seems to provide thread affinity - at least the benchmark results 
change as I assign different threads to different processors, so i seems to 
be affecting per-thread, rather than just per process.  Does this surprise 
anyone?

Now I'm stuck on setting interrupt affinity.  Anyone know how to do this? 
Or does sched_setaffinity do this for me?

I should mention I'm un user space, and not kernel space, so don't have 
access to set_cpus_allowed()


"doug" <noone@nowhere.co.uk> wrote in message 
news:xj%%d.107897$ug2.106532@fe2.news.blueyonder.co.uk...
> Hi guys,
>
> Is is possible (with a standard 2.4 kernel and pthreads) to bind a thread 
> to a particular processor?
>
> I've found reports on the web that say this is impossible with 2.4, but 
> there's a kernel patch/project which provides it (pset).  However, my 
> (suspect) memory keeps telling me that I've seen such code (probably on 
> the web) before.
>
> Off to look further, but any help greatly appreciated.  Cheers,
> Doug
>

.