Containers (in fact Zones plus Resource Management features) is a wonderful technology, particularly in virtualized environments. But the fact is that it is not very usable--speaking of the use of RM feature in particular--since it exists many different RM technologies, not always well integrated with Zones capability.
This is why the upcoming work on
memory sets and
cpu caps are so
interesting, and a more-than-welcome work in order to enhance and ease
the use and deployment of Containers on powerful Solaris systems.
Enjoy reading Jerry Jelinek's blog entry about this work (already in SXCE build 56!).