Newly created extents are not reclaimed
Reclaim GcGems are assigned to specific extents when the GcGems are started.
If an extent is added programmatically, the new extent will not have a
Reclaim GcGem, and no pages on the new extent will be reclaimed until the
Reclaim GcGems are restared by an administrator. This can result in a
backlog of shadow pages.
Restart the Reclaim GcGems when an extents is added programmatically.