[ODE] Huge performance drop

[Syed Setia Pernama]

I have got it solved.. the solution is pleasantly
simple - combine all 4 big trimeshes into one. FPS
went up from 40 -> 100. Amazing...

--- "Jon Watte (ODE)" <hplus-ode at mindcontrol.org>
wrote:

> 
> 1) make sure you run a release mode build
> 2) use your profiler of choice to look at the
> problem (I prefer VTune)
> 
> Cheers,
> 
>           / h+
> 
> 
> Syed Setia Pernama wrote:
> > Hi,
> >
> > OS: Windows XP
> > Compiler: Visual C++ 2005
> >
> > I am using Ode to generate collision using 4 large
> > trimeshes. I know that this could be a taxing in
> > performance, but it is still under control in my
> > development machine (running about 35-40FPS). But
> > there are several weird problems:
> >
> > 1) In my development machine which runs at 40FPS,
> > there is a rare moment where performance suddenly
> > drops to less than 1FPS. The FPS was very low
> until
> > after a few seconds, for which the app resume to
> the
> > working FPS.
> >
> > 2) In the other computer (non-development), the
> > applications runs unreasonably slow even at a good
> > spec computer. Please take a look at below spec,
> and
> > the FPS it generates:
> >   a) Development machine:
> >      Notebook Core Duo 1.83, NVIDIA 7400 256MB
> >      FPS: 35-40
> >   b) Pentium IV 3Ghz, RAM 2GB, NVIDIA 7800GT 256MB
> >      FPS: 15
> >      Comment: Not too slow, but it should exceed
> (a)
> >   c) Pentium IV 2.x Ghz, RAM 2GB, ATI GECUBE 9600.
> >      FPS: < 1
> >
> > I searched thru this forum, and found that the
> small
> > stack size in Windows could the culprit. Is it
> true? I
> > have increased the stack size to 100MB , but no
> > difference.
> >
> > I have isolated the problem to physics (ODE) as
> > disabling all ODE trimeshes result in
> >    a) 70 FPS
> >    b) 120 FPS
> >    c) 40-50 FPS
> >
> >
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> >
> >   
> 


23:62

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