JavaFX Application Heat up MacBook Pro

Tai Hu at
Fri Mar 25 21:11:14 UTC 2016

I am on the latest 8u77.

On Friday, March 25, 2016, Scott Palmer <swpalmer at> wrote:

> What version of JavaFX are you running?
> There is a known issue, where JavaFX (and AWT/Swing) trigger activation of
> the discreet GPU.  I believe for FX the issue has been resolved in the
> latest version, but the equivalent AWT fix hasn't made it to a released
> version yet.
> Scott
> > On Mar 25, 2016, at 4:12 PM, Tai Hu < at
> <javascript:;>> wrote:
> >
> > My JavaFX application runs fine on a Windows box with less than 10% of
> CPU usage. However, if I run the same application on a MacBook Pro 13 inch
> (Laptop monitor, no external monitor). About 30 seconds after I launched
> application, MacBook cooling fan will kick in and running high, just a few
> minutes later, laptop is too hot to put directly on your lap. Actually I
> tried Ensemble app, which has exactly same issue. Few minutes after launch,
> fan kicks in and laptop become hot. I put my application under VisualVM and
> also checked Mac Activity Monitor, based on the number both of them show
> the CPU usage is not extremely high and average out about 25% and sometimes
> spike to 40%. But entire machine heats up. Almost all of our Mac clients
> complained about this issue to us. Does anyone could shield some light on
> this issue?
> >
> > Thanks,
> >
> > Tai

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