Fwd: kaa-metadata + gtk main loop + subprocess = when child exits, 100% CPU usage

---------- Forwarded message ----------
From: Juan Manuel Santos <[email protected]>
Date: Tue, Jan 25, 2011 at 6:57 PM
Subject: Re: [Freevo-devel] kaa-metadata + gtk main loop + subprocess = when
child exits, 100% CPU usage
To: [email protected]




On Fri, Dec 31, 2010 at 4:27 PM, Jason Tackaberry <[email protected]> wrote:

> On Thu, 2010-12-30 at 17:08 -0300, Juan Manuel Santos wrote:
> > Thanks for the info. I have already settled with option 3. Don't get
> > your head too much into this since it's not kaa's fault. Nevertheless
> > it's a good thing that kaa triggered this so we could find out.
>
> In any case, kaa.base svn should fix this issue.  We now defer hooking
> SIGCHLD until after kaa.main.run() is started, so we should no longer
> trigger this pygtk bug just by importing kaa modules.
>
> Thanks for bringing this to my attention (again :))
>
> Cheers,
> Jason.
>
>
>
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Hi Jason, sorry to bother you again. But today on my laptop I faced a
similar problem. The software versions are the same as on my desktop
(kaa-base/kaa-metadata trunk, GTK+-2.22.1, PyGTK-2.17.0).

When running this test app (
http://www.vicarious.com.ar/~godlike/algo.tar.bz2) and trying to close it
from the WM, it freezes. Last strace lines show this:
http://paste.pocoo.org/show/326877/

The "Killed by SIGKILL" line corresponds to KWin killing the window since
it's not responding. This also happens on the main app I was developing. I
do not see this behaviour if I start and end the main loop from inside GTK+,
only if I do so from within Kaa.

Do you have any ideas as to what is causing this? I'm quite puzzled, since
versions are the same as on my desktop.

Thanks
Juan Manuel



Forwarding this to the list again in case it was not read.

PyGTK-2.22 on my laptop still has the problem. The desktop is amd64 whereas
the laptop is x86.

Thanks in advance.
Juan Manuel

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