Solaris 10 now provides Zones, which are virtual
servers running on the server. And the "global" zone
can see the processes of all zones.
Sun has modified ps to include a -Z flag to list the
zone per process. And Sun has included a zone-aware
"prstat" which is a top-like process display tool, but
which lacks many of tops other features.
So having top made to be zone-aware on Solaris would be
great. In particular, being able to add a column for
Zone; and being able to filter to only show a
particular zone (similar to current per-user filter).