Re: gEDA-user: PCB painting has slowed down

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Sun, 2009-03-29 at 21:35 -0400, gene glick wrote:
> Peter Clifton wrote:
> 
> > Polygons make stuff slow.
> OK.  That would be the planes.  I don't too much there yet, but the ones 
> that are there overlap each other.
> > 
> > Perhaps running with a compositing window manager makes things slow,
> > (unsubstantiated suggestion to test without if you are using one).
> > Compiz really messed up gschem performance until the drawing model was
> > fixed. I "think" PCB's is ok though, (and I'm using compiz myself - with
> > the GL branch)
> What is that?  I don't know.

See at the bottom of this email.

> > I assume you're using the GTK HID.
> > 
> Yep. Is lesstif any different, speed-wise?  Oh, I am using KDE 3.5 
> desktop - if that has any bearing.

It shouldn't be (it was once upon a time when the GTK HID did some
really silly things).

> > Remind me which patches you're using?
> > 
> > 
> Back around Christmas you sent me some fixes for the large number of 
> rats that I had (around 7000, I think).  PCB bombed with all the rats. 
> Your patch fixed it up.

Ok, I remember now. It sounds like a complex design. I'd never noticed
that rat limit being hit before, so it may be that your board exercises
PCB in a way which hasn't been tested or profiled for speed.

> Also, my drawing space is large - around 40" X 50".  That was just 
> required to get all the parts to disperse in some reasonable fashion. 
> Eventually, I hope to shrink this monster considerably.  Any chance the 
> size of the board has anything to do with it?

It _could_ be, but I doubt it. PCB uses some quite smart geometric
data-structures to speed up object searches. I'd not 100% rule it out
though.

If you are able, send me a copy of the offending board via private
email, and I'll see if I can nail down why it is going slowly.

The GL code I was working on might help you though, it is generally
faster at rendering stuff, and looks better as well! ;)

git clone git://repo.or.cz/geda-pcb/pcjc2.git

cd pcjc2           <- (I think.. whatever dir the above cmd makes) 

git checkout -b before_pours origin/before_pours

./autogen.sh

./configure --disable-doc --enalble-gl --enable-dbus --prefix=/home/WHOEVER/gEDA
(Set the prefix to wherever you want to install PCB.)

OR:
./configure --enable-maintainer-mode --enalble-gl --enable-dbus --prefix=/home/WHOEVER/gEDA

Since you've build PCB before, I don't expect this to be a big problem.
"--enable-gl" is required on that branch though.. leaving it out gives a
broken build.

Then of course, build with:

make
make install


You will need development packages installed for OpenGL, gtkglext, and
all the usual suspects required for building PCB.

Best regards,

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user