Based on [this article](https://oxyplot.codeplex.com/discussions/281036) I'm using PlotModel.RefreshPlot(true) frequently to load live data, approximately 20 times per second or so, but the performance is not good. It is sluggish and lags behind.
I have 8 line series with 1000 samples/sec each, but reducing the data frequency does not seem to help much, so this does not seem directly related to drawing performance.
There are a few issues:
* RefreshPlot(true) seems to queue on the GUI thread, probably with BeginInvoke, so that if it runs sluggishly it will also start lagging behind with several seconds in a short time.
* RefreshPlot generally feels very slow for a live data scenario
* The GUI thread is locked for big chunks of the time, so even moving the parent window is very sluggish
I am on a powerful PC with pretty recent CPU and GPU, so that should not be the problem. Running Windows 8, but same is seen on Win7.
I have not yet dug into the source code of Oxyplot, but are there any tips on how to improve live data rendering?
Comments: Ok, I see there is more work to do here.. :) The problem was the first example in the WpfExamples application. The plots on the tabs that where initially hidden did not show up until you resized the window. The reverted code fixed this issue. Is there a way to create unit tests with the Plot control? It would be great to cover all these scenarios with threads and loading/unloading by automated tests. I see the update/invalidation process is extremely important for the control to function properly.
I have 8 line series with 1000 samples/sec each, but reducing the data frequency does not seem to help much, so this does not seem directly related to drawing performance.
There are a few issues:
* RefreshPlot(true) seems to queue on the GUI thread, probably with BeginInvoke, so that if it runs sluggishly it will also start lagging behind with several seconds in a short time.
* RefreshPlot generally feels very slow for a live data scenario
* The GUI thread is locked for big chunks of the time, so even moving the parent window is very sluggish
I am on a powerful PC with pretty recent CPU and GPU, so that should not be the problem. Running Windows 8, but same is seen on Win7.
I have not yet dug into the source code of Oxyplot, but are there any tips on how to improve live data rendering?
Comments: Ok, I see there is more work to do here.. :) The problem was the first example in the WpfExamples application. The plots on the tabs that where initially hidden did not show up until you resized the window. The reverted code fixed this issue. Is there a way to create unit tests with the Plot control? It would be great to cover all these scenarios with threads and loading/unloading by automated tests. I see the update/invalidation process is extremely important for the control to function properly.