[Xen-users] Java non-performant in a domU?

Matthew Palmer
Mon, 05 Jun 2006 02:54:13 -0000

Has anyone else seen a significant reduction in performance of Java
applications running in a domU?  We''re seeing a reduction in
performance of
around 30% when running a Java (Tomcat, etc webapp) in a domU over running
it natively -- this is significantly worse than what we see for other
applications.

Wondering if anyone else has seen this problem (so we know we''re not
going
nuts), and whether you were able to tune things to make it perform
acceptably.

In the absence of any solutions, we''re going to have write Xen off on
this
project, which will be a big shame (and a nasty black mark in Xen''s
copybook
in the eyes of The Powers That Be).