composite performance

[thomas klein]

On Saturday 08 January 2005 00:35, thomas klein wrote:
> On Thursday 06 January 2005 12:42, thomas klein wrote:
> > I'm running xorg 6.8.1-RC2
> > X Window System Version 6.8.1.99
> > Release Date: 2 October 2004 + cvs
> >
> > I'm using composite extension with the last xcompmgr on kde.
> >
> > I'm on a shuttle with a geforce4mx embeded gfx card, an
> > athlon2200, kernel 2.6.10, nvidia driver 6629.
> >
> > I got Option "RenderAccel" "true".
> >
> > mode 1280x1024 24bpp.
> >
> > When I use kwrite / kate / kdevelop in full screen mode,
> > scrolling text lags a lot.
> >
> > If I resize the window to less than 50% of the visible screen,
> > text scrolling become usable.
> >
> > One very weird stuff is :
> >
> > resize => text scrolling become usable
> > switch to a desktop with an open window then back => same scroll
> > speed switch to an empty desktop then back => scroll speed > 2x
> > (very usable).
> >
> > It's hard to explain but reproducable
> >
> > Is this normal (due to the actual state of composite extension)
> > or does I got some configuration issue ?
> >
> > thanks in advance,
> >
> > t.
>
> for information,
>
> I got an geforce4mx, I change the amount of video ram in my bios
> (it's shared video memory from the main ram). I change the value
> from 32 to 64Mo and now composite is fast in any situation (full
> screen or not).
>
> 1280x1024 24bpp

mistake...

same results after using lot of windows on 2 or more desktops...

switching from one with windows to a fullscreen texte window makes 
scrolling lag...

switching to a desktop with no window then back to the text => 
scrolling ok. (this is for 90% of the tests i made.)

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