Re: Bad X-performance on 2.6.6 & 2.6.7-rc1 on x86-64

[Stan Bubrouski <stan@ccs.neu.edu>]

On Tue, 2004-05-25 at 08:36, Andi Kleen wrote:
> On Tue, May 25, 2004 at 12:26:59PM +0200, Malte Schr?der wrote:
> > New information :)
> > I didn't profile it yet but I think I found what caused the problem.
> > It turned out that I have to disable alsa mmap-support in xine (mplayer worked w/o problems, it does not offer alsa mmap), so X is not involved at all. Do you still need a profile or is this a known thing?
> 
> Ask the xine guys if it's known, I don't know much about xine.
> If a user space change fixes it then I don't need any profiles.
> 

I can confirm that xine with alsa-mmap option set does cuase strange
behaviour, though I notice it mostly as audio and video getting out of
sync when playing videos.  I've noticed this behaviour since I started
doing weekly xine CVS builds.  I've never bothered reporting it however,
I just turned off the option... which leads me to my question, what is
the advantage of using alsa-mmap in an app if it is used correctly?

And Malte, are you using emu10k1 driver per chance?

-sb

> -Andi