VMware have included the old and trustworthy performance monitor VMKUSAGE in VC 2.5 U4.
This time the monotor has been added to VC as a plugin.
To get access to the new plugin you have to follow this knowledge base article.
If you like me upgraded your VC without stopping the Webaccess service first you have to follow this KB article before the plugin will work.
See more screenshots at www.run-virtual.com.