PS: playing more it is not only the spin box. Other actions taken on the
interface slow it down too. Thus it is not a problem with the spin
boxes, but must be more generic. Only noticed the problem there first.
On 09/22/2010 04:48 PM, Preisig, Heinz A wrote:
Certainly:
I am using a timer to generate time events. On each time event I am
doing a computation, in this case a data acquisition (DA converter)
and then a computation the result of which is sent to a DA converter.
The interface has a couple of spin boxes and sliders and buttons to
manipulate what is happening. In the application I am using now, I
replaced the process interface, which actually goes and receives and
sends data to a serial port, by a simple simulation, which essentially
does nothing.
What I observe is that when the task executes nicely in the time grid
(1 s). Once I am changing things in a spin box, the task does not make
it to catch the next time event and it keeps on slowing down the more
I am manipulating. I presume there are lots of events being generated
in the background or passed on to other levels.
I should mention that this is not the first application of this type.
We wrote one last year and it worked just fine. We used it extensively
at the time on very slow machines. The one I am working on now is a
much faster machine and it runs the newer version of python and pyqt.
On the slow one it gets bugged down tremendously.
Not sure what the problem is....
Heinz
On 09/22/2010 04:04 PM, Hans-Peter Jansen wrote:
On Wednesday 22 September 2010, 15:45:15 Preisig, Heinz A wrote:
I observed that when using integer spin boxes in a timed loop the
performance drops significantly after changing a value.
Heinz, could you elaborate on "using integer spin boxes in a timed loop" a
bit, please? I don't grasp the concept of it ATM.
Pete
After dxchanging
them by double spin boxes no deterioration was observed.
Heinz Preisig
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--
Heinz A Preisig
Professor of Process Systems Engineering Private:
Øvre Bakklandet 62 B, 7013 Trondheim, Norway
Department of Chemical Engineering
Norwegian University of Science and Technology
N -- 7491 Trondheim, Norway Tel direct: +47 735 92807
Tel mob: +47 9754 1334
e-mail: heinz.prei...@chemeng.ntnu.no
<mailto:heinz.prei...@chemeng.ntnu.no>
web: www.chemeng.ntnu.no\~preisig <http://www.chemeng.ntnu.no/%7Epreisig>
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--
Heinz A Preisig
Professor of Process Systems Engineering Private:
Øvre Bakklandet 62 B, 7013 Trondheim, Norway
Department of Chemical Engineering
Norwegian University of Science and Technology
N -- 7491 Trondheim, Norway Tel direct: +47 735 92807
Tel mob: +47 9754 1334
e-mail: heinz.prei...@chemeng.ntnu.no <mailto:heinz.prei...@chemeng.ntnu.no>
web: www.chemeng.ntnu.no\~preisig <http://www.chemeng.ntnu.no/%7Epreisig>
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