So, as a small exercise designed to re-familiarise myself with the foibles of tomcat, garbage collection, java command line configuration options and so on I ventured on a brief excursion into the world of tomcat, java and jvmstat on Mac OS X. Now, GC analysis and configuration of the tools required to do so is something I've not done in a number of years. Today I needed to install visualgc for tomcat on Solaris.