LightningChart Support Forums

In our application the user can set the line size of each diagram at runtime. We noticed that setting linesizes > 1 resulted in much higher memory usage.

I added my sample code which creates a polar diagram with one point line series with 150.000 points and alternates the linesize between 1 and 2 every two seconds.

Memory consumption is about 300-400 MB for linesize = 1 and 600-900 MB with linesize = 2. So far the values stay consistent after 30 minutes, so I don't think there's a memory leak.

Is there a technical explanation why larger linesizes result in such memory requirements?

When using LineWidth = 1, just the line end points are calculated and given to GPU.

When LineWidth > 1, the lines have to triangulated (tesselated) in LightningChart side and given as a little triangles for GPU. Memory required for that is many times larger than with line width of 1.