"Upon the release of the first Mac OS X 10.7 "Lion" Developer
Preview, we had delivered early benchmarks of this Apple operating
system slated for release this summer. Since then, there has been the
release of Mac OS X 10.7 Developer Preview 2 (DP2) so we have carried
out an updated set of Mac OS X 10.7 performance benchmarks. This also
includes a comparative look at the Mac OS X Lion performance against
Ubuntu Linux 10.10."