speeding up hg pull?

[Ryan Brown]

We were wondering why the hg server was taking the a long time to just
pull changes, so attached a timer on the script ..(The server isn't
overloaded btw)

@echo off
echo %time%
hg pull -u
echo %time%

22:05:00.23
pulling from ssh://hg@200.000.000.000/dir/
searching for changes
no changes found
22:05:15.80

15 seconds seems a bit high, is there any serverside tweaks to improve
it or speed up a pull?