Performance with hundreds of nullfs mounts?

[Andrew Snow]

Ivan Voras wrote:
> I seem to remember hearing an anecdote somewhere that using hundreds
> (or thousands?) nullfs mounts for jails results in unreasonably bad
> file system access performance. Does somebody have this kind of setup
> / is it true?

I'm using about several readonly nullfs mounts per jail: usr, bin sbin, 
lib, libexec, with ~20 jails per machine, and the speed is just fine, on 
7.0-STABLE.


- Andrew