PostgreSQL and OpenVZ

Hello,

Does anybody have experience in running PostgreSQL inside OpenVZ
(http://openvz.org/) or any other virtual private servers solutions?
I'm interested in both cases of running single PostgreSQL server and
multiple PostgreSQLs on one physical machine under relatively high
(though not IO-limited) load.

Any caveats or limitations of this approach? Any known penalties or
problems with this tandem?

Best regards,
Ivan Zolotukhin