> have you increased the number of vnodes?  the default max vnode
   > calculation tends to limit UBC usage to a fairly small portion
   > of the total available RAM in my experience.
   
   I whopped up the number of vnodes using sysctl - didn't seem to affect
   things.


this doesn't work on some ports.  dunno which.


the reason it matters is that pages in disk cache need a vnode.