how to test the speed of rsync

From: kenneth (xthua111_at_zju.edu.cn)
Date: 10/30/04 

Date: Sat, 30 Oct 2004 13:56:39 +0800

hi everyone.i 'd like to make a mirror of fedora rpms in rsync.and i get
a list of rsync sites. what puzzled me is which site to used . i'd like
to get the higher speed. any advises? thank you!