XWin 100% CPU usage for Java applications on Vista

[Dr. Franz Fehringer]

Hello,

This 100% issue is a known problem with XWin on 2003 and Vista; it  gets 
continually posted on this list.
And no, -engine 1 is not the cure, i think the problem has to be analysed 
and remedied by the cygwin/cygwin-xfree developers.
Xming (same code base?!) btw does not suffer from this problem (at least not 
on 2003R2; haven`t tried with Vista).

Cheers

Franz


----- Original Message ----- 
From: "Vladimir Nicolici" <vladnc@gmail.com>
To: <cygwin-xfree@cygwin.com>
Sent: Saturday, March 24, 2007 2:42 PM
Subject: Re: XWin 100% CPU usage for Java applications on Vista


> 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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