100% CPU usage in Wine-0.9

[Mark Knecht]

On 11/10/05, Stefan Dösinger <stefandoesinger at gmx.at> wrote:
> Hello,
> >    NOTE - I do not think this is somethign new. I've seen programs
> > running under Wine in the past using 100% CPU, but they were big
> > complicated programs and not available freely so it would have been
> > hard to work on. I think with the information I've given in the first
> > post this should be something more people should be able to look at
> > more easily.
> This is odd, I downloaded the programs, but I can't reproduce the behaviour.
> Triangle seems to work just fine - I can play sounds(or, better, I could, if
> I had more idea of music ;-) ). Hardly any CPU usage.
> With crystal running, I get 1% user, 0.3% system cpu usage, but I can't hear
> any sounds. Are there any settings I have to change to make the program play
> something?

No difference here. Both play fine for me on Linux and Windows with no
fooling around.

>
> So the usual questions arise:
> *What kernel do you have(I have 2.6.14.1)

2.6.14-rt6

> *What X version(X.Org 6.8)

xorg-x11-6.8.2-r6

> *Graphics card + driver(Radeon mobility M9, fglrx)

Radeon X300 (PCIE), radeon driver from the kernel

> *Sound card + driver(some realtek audio, snd-intel8x0)

NForce4 CK804 + snd-intel8x0
RME HDSP 9652 + snd-hdsp

>
> The high system cpu usage looks suspicios, there might be a driver issue. I've
> seen this behavior with the radeon driver from X.org and Battlefield 1942.

Indeed, I am using that driver. I have not discovered how to build the
fglrx driver using 2.6.14-rt6. Additionally there is no DRI support
(as I understand it) for PCI Express cards until 2.6.15. I have
2.6.14.1 unbuilt right now as I normally need realtime capabilities,
but I'll build it and test it for this problem.

>
> The fact that the same .exe file produced different behavior is easy to
> explain: The program seems to be just a loader for a dll file with the same
> name. So if you exchange the crystal.dll and the triangle I.dll, it's likely
> that you get changed behavior. So you can even save disk space if you just
> create symlinks to savihost.exe ;-)

Probably true. I'll try it as I will eventually end up with 100 of
these little VSTs and Savihost is often bigger then the VST it's
hosting.

>
> I suspect my no-sound issue to be connected with the problems you describe.
> You could try to use different sound drivers(oss, alsa, arts, esd). Arts and
> esd might be interesting here, because there's no direct hardware access, so
> there should be no high system cpu usage.

Good ideas. I'll give it a try.

In a related vein, we in the Linux audio community are dieing for
someone here to pick up maintenance of the Jack driver as most all of
our apps are Jack based. Currently the Jack driver seems broken as
there was a Jack API change circa 100.0. Is there anyone here looking
after that driver?

I'll try other sound options and come back later.

Thanks!

- Mark