Re: old radeon latency problem still unfixed?

Lee Revell
2006-02-27T00:32:53Z

On Mon, 2006-02-27 at 11:18 +1100, Benjamin Herrenschmidt wrote:
> On Sun, 2006-02-26 at 18:02 -0500, Lee Revell wrote:
> > On Mon, 2006-02-27 at 09:53 +1100, Benjamin Herrenschmidt wrote:
> > > Well... as soon as a 3d window appears, the server starts switching
> > > all the time. there might be some spin loop in there remaining...
> >
> > But if the only lock taken in the radeon driver is the BKL, the
> > SCHED_NORMAL X server should not be able to delay a SCHED_FIFO process
> > right?
>
> If you have preempt enabled, I suppose .... can we preempt with the BKL
> nowadays ?

Yes.

This seems to have been user error - old kernel and/or broken config.
Until I get more feedback from the user, this can probably be
disregarded.

Lee