[pygtk] hungry TreeStore... SOLVED (was GTK_MODULES=gail:atk-bridge)

Willie Walker William.Walker at Sun.COM
Fri Feb 13 09:10:10 WST 2009


Sandro - yikes!  This might be a good test case for helping improve the 
efficiency of GAIL/ATK, or at least for identifying a gotcha one might 
avoid in the UI code.  Can you log this as a performance-related bug 
against the GTK+/gail component at http://bugzilla.gnome.org?

Will

Alessandro Dentella wrote:
> Hi, 
> 
> 
> 
> 
> 
> On Thu, Feb 12, 2009 at 04:40:31PM +0100, Alessandro Dentella wrote:
>> Hi, since yesterday, on my linux Ubuntu 8.0.4 I'm experimenting very strange
>> things that I don't see on other machines. TreeStore  'append' method is
>> taking a huge amount of time as shown by this 'prun' inside ipython:
>>
>>    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
>>       332    4.644    0.014    4.648    0.014 {method 'append' of 'gtk.TreeStore' objects}
>>       495    0.490    0.001    0.490    0.001 {method 'set' of 'gtk.TreeStore' objects}
>>
>>
>> the same program on a different machine:
>>
>>    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
>>       495    0.011    0.000    0.011    0.000 {method 'set' of 'gtk.TreeStore' objects}
>>       332    0.004    0.000    0.007    0.000 {method 'append' of 'gtk.TreeStore' objects}
>>
>>
>>
>> I'm not at all aware of any changes. I didn't upgrade any tools and I don't
>> remember to have installed anything in the last 2 days.
>>
>> One more strangeness is that I'm having these messages:
>>  Warning: /build/buildd/glib2.0-2.16.4/gobject/gsignal.c:2271: signal name
>>  `selection_changed' is invalid for instance `0x88e2998'
>>
>> that I don't receive on other machines and I didn't receive until yesterday.
>>
>> doesn that give you any idea wher I could investigate to understand what
>> happened?
> 
> 
> I solved the problem when answering to Laszlo and Albert (thnaks to both of
> you). I realied that the error message (from the second problem) was related
> to a directory that is not an Ubuntu nor one of mine  (>  Warning: /build/buildd/glib2.0-2.16.4/gobject/gsignal.c:2271: signal name
>  `selection_changed' is invalid for instance `0x88e2998')
> 
> So I remembered that a week ago I wanted to test gtkparasite. I had to
> enable assistive tecnologies. At the end I got an enviromental variable
> GTK_MODULES=gail:atk-bridge 
> 
> It was sufficient to unset it and everithing is working correctly.
> 
> I hope this can help others that may  get into troubles like this...
> 
> 
> sandro
> *:-)
> 
> 
> 



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