NSTableView -reloadData is slow

[Jonathan B. Leffert]

When I change a NSTableView's data source and call -reloadData on the table
view, it seems to take a second or two to actually reload the data.  It's a
very noticible delay.

Is there some timer firing in the background checking all views that are
marked as dirty and redrawing them?  If so, what is the timer period?

I'm on a fairly fast machine, so I don't think that's the problem.  I've
also timed the rest of my code and it is all completing quickly.  The table
view just takes a while to update.

Jonathan