XWin 100% CPU usage for Java applications on Vista

Vladimir Nicolici vladnc@gmail.com
Sat Mar 24 13:42:00 GMT 2007

On 3/24/07, Holger Krull <holger.krull@gmx.de> wrote:
> >   3. On a linux machine, run this command:
> >
> >   export DISPLAY=__VISTA_HOST__:0.0
> >
> >   4. Start a Java GUI application, on the linux machine. For example,
> > use the jconsole command, from the Java JDK.
> >
> >   5. After the GUI is displayed on the Vista machine, lock the
> > computer, then unlock it. The GUI window will become white and
> > unresponsive, and one CPU core will be used up to 100%.
> I had similar problems and found that starting the X Server with
>  -engine 1 will help. Give it a try.

I tested, unfortunately, it doesn't work. And I just discovered that
opening and closing the "About" window from the tray icon causes the
same problem.

A concern is that I performed the tests using Remote Desktop. And I
just found another cygwin-xfree thread named "XWin 100% CPU usage
(Remote Desktop)" (it was on Windows 2003 Server). So Remote Desktop
might also be a factor.

Next week I will try again using a local session, but I already had
some "100% CPU" issues last week, without using Remote Desktop, so
most likely Remote Desktop is not the problem.

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