Experimental Physics and
Industrial Control System

I would like to present a possible fix for Java2D-based applications whose performance suffers dramatically when they are run over Remote X (ssh). 
This includes, but is not limited to, GUI applications that use Swing and/or AWT and are running on JDK 1.4 or greater.

LINKS to technical background information
--------
http://java.sun.com/products/java-media/2D/perf_graphics.html
http://java.sun.com./javase/6/webnotes/trouble/TSG-Desktop/html/java2d.html
http://java.sun.com/javase/6/webnotes/trouble/TSG-Desktop/html/java2d-props.html

SOLUTION
--------
When running Java GUI applications over Remote X, you should pass the following property to Java VM: -Dsun.java2d.pmoffscreen=false, e.g.
java -Dsun.java2d.pmoffscreen=false -jar archiveviewer.jar

Our test software at SLAC was the ArchiveViewer 1.2, and we indeed saw a dramatic improvement.

Thanks,
Sergei Chevtsov 

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