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List:       kde-kimageshop
Subject:    Re: mutrace and tiles3
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2009-09-16 8:58:39
Message-ID: Pine.LNX.4.64.0909161057120.21216 () calcifer ! valdyas ! org
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On Wed, 16 Sep 2009, Cyrille Berger wrote:

> On Wednesday 16 September 2009, Boudewijn Rempt wrote:
> > I did exactly the same thing as with tiles1. It was much slower -- and the
> > results are certainly puzzling, since the main contention doesn't seem to
> > come from the tile engine!
> I wouldn't be so sure, since 190168 is a mutex used by the event loop, if 
> tiles3 use more signals it can be the explanation. Might be worth to try by 
> disabling the glib loop event and see what happen.
> Use QT_NO_GLIB to disable glib event loop without recompiling Qt:
> export QT_NO_GLIB=1

That's something I'll try for sure. However, from a cursory examination, the
tiles3 engine doesn't use signals and slots at all.

Boudewijn

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