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From Abel MacAdam <>
Subject Allocated memory and VMWare
Date Fri, 15 Jan 2010 08:57:54 GMT


We manage several customers on VMWare systems. Their Tomcat installation is
used by a Content Management System written in Java. I have a question about
what happens with Tomcat when memory it has configured is not available when

Our Tomcat installations should use 500 MB (-Xmx516m). But when that memory
is not used, VMWare will take it away, and give it to other VMWares that are
in need of memory. This will not be a problem for a while. But at one moment
Tomcat may wish to use this memory, and VMWare will not be able to supply it
directly. What will happen in that case?

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