Bad ram usage with scenebuilder

Hi, I created a simple Pane with a JFXProgressBar as child in it. When i added JFXProgressBar, my ram usage suddenly started to increase rapidly.

So in 1 minute it takes approximately 5 GB ram 😃, As soon as i remove JFXProgressBar my ram usage stopped and in the next GC call it dropped to 4 GB.

[RAnders00]

Oh wow, I did not expect that. It looks like something is allocating insane amounts of memory outside of the Heap (in native memory) which suggests there is a bug in JavaFX. The memory usage in the graph you have shown is perfectly normal (like expected) but something is rapidly growing outside of the heap (which is where all object allocated inside of java live), which suggests that native JavaFX code is leaking it. The amount of objects allocated inside of Java’s heap is 25 MB only.

Now I’m out of direct knowledge and I can only offer things that may or may not help. I’m just guessing what could be the problem.

• Have you validated that you have the latest version of Java (preferably the one shipped by Oracle)

• Try to launch SceneBuilder with software rendering only:

  java -Dprism.order=sw -Dprism.verbose=true -jar "SceneBuilder-8.1.1.jar" 2>&1 | tee scenebuilder.log
  

Get the executable jar (if you are not already using it) from here.

You might need to re-import the JFoenix jar.

There is no need to make any more heap dumps, since they do not capture the problem. Just report back whether the issue still occurs and attach the scenebuilder.log (maybe verbose prism output yields something useful).

[SaeedMasoumi]

Thank you, Another weird thing, i have two graphic cards on my fedora (nvidia & intel). By default whole system runs on Intel, so i decided to switch to nVidia and run SceneBuilder with that. Then i saw there is no memory issue anymore