Hi Laurent,
You do not provide enough information to describe your case.
Could you send me a script as short as possible simulating what you are
doing and showing the performance problem?
Is your X server running on the client machine ?
Rene Brun
Laurent Mirabito wrote:
>
> Hello all,
>
> I wrote a small online monitoring program displaying data from a Si
> detector. Mainly it consists of one acquisition method updating histograms
> and displaying them in different canvas. It works well and my only worry
> is the drawing speed. In some canvas I would like to have a "scope" mode
> displaying all events (namely 100 event/s when I do not draw those 512
> bins histograms) but I can hardly draw 10 % of events.
>
> I use the standard method to update the drawing:
>
> if (fRawSelected && cnt%2 == 0 ) // Raw data canvas selected
> {
> fcRaw->cd(); // change to the canvas
> fHRaw[fCurrentEntry-1]->Draw(); // Histo drawing
> fcRaw->Modified(); // flag modified
> fcRaw->Update(); // Update the Pad
> }
> Is there any setting I can modify to improve the speed of this
> application?
>
> Many thanks in advance for the answer.
>
> Laurent Mirabito
> IPN Lyon
>
>
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