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
M. Winikoff. Multi-Agent Programming: Languages, Platforms and Applications, volume 15 of Multiagent Systems, Artificial Societies, and Simulated Organizations, chapter 7, Springer, New York, NY, (2005)
J. Broekstra, A. Kampman, and F. van Harmelen. The Semantic Web -- ISWC 2002: First International Semantic Web Conference Sardinia, Italy, volume 2342 of Lecture Notes in Computer Science, Springer, Berlin, (2002)