I was hoping to whip something up fast for tonight, but I suck at presentation making and I suck even more at doing it with slideshow and css 🙂

Probably safer to just use the one you have for now. I saw your comment a bit late, or I could have created the slideshow for you, but now I have to run 😞 Looking forward to checking out the video! Good luck!

@ron how did it go?

It went well good questions and they were surprised at how little code you needed

Cool :))

One might join the channel as he was thinking of using tornadofx in a chat project

Nice :)

Hi all! I have a very strange memory leak which is not shown on VisualVM. It may be related to JavaFX. Any ideas? http://stackoverflow.com/questions/40899372/javafx-unexplainable-leaks-memory-on-linux

I am especially interested in a tool to debug this

@voddan Have you seen this? http://stackoverflow.com/a/40239829/2094298

What versions of Mesa and X.org are you running?

@Ruckus This is gold! I 'am gonna check Thanks!

Sure thing. Sadly, JavaFX on Linux can be quite unstable. Some fixes will come with JDK 9 and 10, but I don't know if it will ever be up to par with Windows or Mac

I heard somewhere Java was cross platform 🤔

Not sure I agree with the assessment on the Mac...i have an AppKit crash that doesn't appear in Linux or Windows to deal with

@carlw What does AppKit have to do with JavaFX?

It's the underlying windowing toolkit for the Mac...GTK is linux, etc

Ah, I see. I misunderstood your comment 🙂

The specific error is something like "not on Appkit thread"

I'd still bet there are more issues on Linux than Mac (not saying there aren't Mac only issues)

could be...in my experience, windows is the best platform for javafx...Fortunately it accounts for 90% of the computers even today

Same here (which sucks since all my home boxes are Linux 😛)

my guidance is "write once"...."test everywhere"

@edvin It looks like this bug has something to do with the way the JavaFX Animation system integrates with OpenGL, so this could show up pretty bad with the TornadoFX transitions (like in the slideshow and wizard components you're making).

@Ruckus What's the gist of the program? Many animations running all over the place?

@carlw To which program are you referring?

@Ruckus the bug

Well, I'm no OpenGL expert, but a likely problem is with calls to

com.sun.prism.es2.X11GLContext.makeCurrent

. I guess some versions of Mesa slowly leak memory when calling OpenGL's

makeCurrent

(not a Java/JavaFX problem, but I guess JavaFX's underlying systems call this method a lot for animations so you start seeing the buildup).

Not that progress indicators in JavaFX us the animation framework for indeterminate state, so using them will make this issue rear its head too (especially since even removing them doesn't stop the issue until they are GCed)

@voddan Can you try factoring the Font out of the Lambda and see if you get the memory spike?