May 042016

Recently I noticed 100% CPU usage on my Guacamole installation. Its a Debian 8.3 running Tomcat 7 version 7.0.56-3+deb8u1. It took me about 1 hour until I found the solution. It seems to be a bug related to threading (maybe Guacamole is keeping threads?) that dates back to 2009! See

The solution is easy and solved my problem right away. In server.xml find your connector and add
as seen in the bug report.