The Visualization Toolkit (VTK) is an open-source, freely available software system for 3D computer graphics, image processing and visualization. VTK consists of a C++ class library and several interpreted interface layers including Tcl/Tk, Java, and Python.
Java 7 should fix these bugs. In the meantime, Jetty includes several work arounds that deal with these problems. When Jetty employs these work arounds, you see messages in your logs like the following:
JVM BUG(s) - cancelled keys 16 times
JVM BUG(s) - recreating selector 4 times, cancelled keys 32 times
JVM BUG(s) - injecting delay 8 times