python-dbus 0.80.1 memory leak issue

John (J5) Palmieri johnp at
Tue Jan 30 17:38:25 PST 2007

On Tue, 2007-01-30 at 23:42 +0100, Luka Renko wrote:
> Hello,
> I am one of the developers of KDE Guidance Power Manager that uses python-dbus 
> to access HAL for power management (battery, suspend/hibernate, CPU freq 
> scaling). By recent upgrade of python-dbus in Kubuntu Feisty to python-dbus 
> 0.80.1 we have got several user complaints about huge memory consumption of 
> our application. Memory was used in the range of 0.5 MB/minute. See bug [1] 
> for more details.
> Power Manager is PyQt3/PyKDE3 application (source code is available at [2]). 
> Application does poll on HAL status in regular intervals (battery, 
> ac_adapter). This is due to the fact that PyQt3 does not have proper Qt 
> mainloop integration yet (only available in PyQt4) and we cannot use dbus 
> events/notification.
> It looks like that these regular calls to HAL/dbus are leaving some references 
> around that are consuming memory.
> I would like to know if any other user of python-dbus has noticed any memory 
> leaks with 0.80.1? Has something changed in terms of dbus references that we 
> need to change in our application to properly work with python garbage 
> collection?
> Regards,
> Luka

It would really help if you could distill this all down to a simple test
case which exhibits the leak.  Thanks.

John (J5) Palmieri <johnp at>

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