On Sat, Nov 03, 2001 at 11:46:22PM -0500, Andy wrote:
> > > This may be a small thing to some, but it is important when I've set up
> > > my machine and want to use it as a desktop Linux box(and get jealous
> > > when using MSWindows). One thing I've noticed is that my windows are
> > > pretty slow to draw when I move them around (I use opaque windows, and
> > > no icons, just a large (1-2MB) .xpm for a background and a desktop at
> > > 1600x1200). However, the one that is very quick is XMMS. Since I've got
> > > DRI working, as well, OGL stuff is fast, as well, but, AFAIK, there
> > > aren't any OGL window managers. I thought this was curious. One friend
> > > of mine suggested that it was because XMMS uses a small window. However,
> > > when I move, say, an xload window (a small one) it moves choppily, too.
> > > At first, I just chalked this all up to X being slow. However, today, I
> > > tried something different. I installed an older version of WindowMaker
> > > (whatever came with Slackware 7.1... 0.62.1) on my box and got it
> > > working. To my surprise, the windows (using opaque moving) moved around
> > > significantly smoother than FVWM2. So, my question is: why is
> > > WindowMaker faster than FVWM2 at redrawing windows? Can I make FVWM2
> > > faster at redrawing windows? Do other people notice this, as well?
> >
> > One reason is that fvwm does a lot of things during window motion.
> > You can speed this up by not using some of the functionality:
> >
> > - Turn off SnapGrid and SnapAttraction
SnapAttraction -1
SnapGrid 1 1
> > - Use simple window decorations without gradients or pixmaps
> How do I do this? I'm currently just using the default, gray "3D" window
> decorations.
That should be simple enough.
> > - Use only one page per desk (DesktopSize 1x1)
> I'm currently using 2x2 pages per desk on two desks, but I tried that
> and there was no significant speed improvement.
>
> > Another reason can be backing storage and saving window contents
> > obscured by other windows. If both are turned off, X has to do a
> > lot of extra drawing, but it actually depends on the video card
> > (and the applications) if the additional drawing is faster or
> > slower than caching the contents (because reading from the video
> > card is usually much slower than writing to it). Try if either
> >
> > Style * BackingStore, SaveUnder
> >
> > or
> >
> > Style * BackingStoreOff, SaveUnderOff
> >
> > helps.
> I've tried those and they don't really seem to do anything. I've even
> tried to tell X to use/not use backing store, and FVWM is still pretty
> slow (more like choppy).
>
> If it helps, I'm using X4.1.0 on a RadeonVE with a desktop size of
> 1600x1200 and 24bpp.
What fvwm release do you use? The window motion code in some of
the 2.3.x releases was quite slow.
Bye
Dominik ^_^ ^_^
--
Dominik Vogt, email: d.vogt_at_lifebits.de
LifeBits Aktiengesellschaft, Albrechtstr. 9, D-72072 Tuebingen
fon: ++49 (0) 7071/7965-0, fax: ++49 (0) 7071/7965-20
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Received on Mon Nov 05 2001 - 04:10:49 GMT