[e-users] Enlightenment utilizes nearly 100% of the CPU while moving windows

[Martin H. <mh...@al...>]

Hello,

the last few days i started noticing some strange effect with
enlightenment dr17. It started with the fact that i was not able to
understand my peer when using skype cause the sound came in only in
disassembled parts. It felt sort of strange and after spending hours
investigating and having several other problems causing me to reinstall
the system from scratch (there were some layout-issues i wanted to deal
with anyway).=20

The Problem sadly did not walk away. But it changed. Now after being
back with a fresh install, skype was the first thing i tried. It worked
like a charm. Then i kicked in my webbrowser and tried to move it to a
certain position and then the fun started... it came to the fact that i
couldn't have firefox open while skyping without skype loosing _a lot_
of quality. Now this bothered me and i started investigating it further.
After a while i found out, that if i put top or htop into a xterm and
start moving it around in an otherwise blank enlightenment, the cpu
will increase from 0 to 40 up to nearly 100% utilisation, used by
enlightenment. If i move the xterm in front of firefox for example,
firefox will use the 100% of the cpu not enlightenment. I think this is
a bug but i'm not sure whether it is an enlightenment issue. But i was
using enlightenment dr17 on the same system for about half a year,
including frequent usage of skype and it did NEVER show this problem
before. I maybe should add that i don't think the problem with window
moveing existed before the reinstall.

To make sure it's not some .deb i missed to copy over from the last
build, i did a complete rebuild and removed my ~/.e directory, just to
be sure. But the problem wouldn't go away. It was still reproduceable.
So i spent some more time investigating it. I first investigated that
it's not the x-server by coping back my old xorg.conf . Nothing
changed. Next thing i thought about was verifying the installed x
libraries... again no change. Then i stumbled across the enlightenment
dropshadow module. Disableing it brought only slight relief for the
cpu. I also made sure that the X-server has not loaded any composite
stuff or the like.=20

Okay then, i switched over to another wm (fluxbox) and tried everything
from there. The cpu utilisation there was a LOT smaller. It even is
smaller on something bloated, like gnome. That's why i'm addressing
enlightenment-users mailinglist and not some general mailing list. I
spent some hours googling also but still did not find any solution to
this.

The specs of my system would be:

Intel Pentium M 1.4 GHZ
256 mb ram
in an Thinkpad r40 running debian sid/unstable

I have no idea how to actually prove it's an enlightenment bug and if=20
i should be wrong, sorry for the bother.

If i can provide any additional information for backtracing the
problem, let me know how and i'll what i can do.

Thanks in advanc3e

Martin