Frequently we've run into controller bugs which result in hundreds of
thousands, or even millions of rules being installed in an OpenFlow
table. This isn't something trouble-shooters naturally think of to
check for, so it's nice to have a low rate warning message to hint at
the potential problem.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>