[PyQt] strange dialog slowness

[Giovanni Bajo]

On 10/21/2008 5:30 PM, Mark Summerfield wrote:
> Hi,
> 
> I've encountered an odd behaviour in PyQt4 which seems to be peculiar to
> my Fedora 8 system. I have PyQt 4.4.2, Qt 4.4.0, and Python 2.5.1
> installed from packages and they work fine.
> 
> I also have PyQt 4.4.3, Qt 4.4.3 and Python 2.5.2 installed locally on
> both my Fedora 8 system and on my Kubuntu system. On the Kubuntu system
> everything is fine, but on Fedora 8, windows take a long time to appear
> for the first time---for example, the file open dialog takes around 14
> seconds even when the current directory doesn't have many items.
> 
> I tried building everything from scratch, I tried both later and earlier
> versions, and I still have the same problem. The slowness does not
> affect the locally installed Qt for C++/Qt programs, only for PyQt.
> 
> Phil hasn't encountered this problem and suggested using debug versions
> of the Qt libraries to try to trace it; but first I wondered if anyone
> else had hit the problem and maybe had a fix they could suggest?

Before rebuilding the world, I would try to attach strace (or even 
ltrace) to the running process and see what it's doing in those 14 seconds.
-- 
Giovanni Bajo
Develer S.r.l.
http://www.develer.com