updating loc-rib with 5k routes takes too long during open phase

odl: osgi
org.opendaylight.controller.version = 0.1
org.opendaylight.controller.build.scm.version = e062c06cd7ca669e3fc2200a43c11c5ed3b20f04
org.opendaylight.controller.build.user = jenkins-controller
org.opendaylight.controller.build.workspace = **********
org.opendaylight.controller.build.timestamp = 1412201848489
org.opendaylight.controller.build.machine = **********

Using exabgp tool i wanted to update 5k routes during the open phase.
All 5k updates were sent just in 12 seconds (see pcap)

But updating loc-rib took too long.

(Session duration, routes present in loc-rib)
(u' 0:00:00:23', 1533),
(u' 0:00:00:32', 1979),
(u' 0:00:00:57', 2819),
(u' 0:00:01:09', 3142),
(u' 0:00:01:21', 3442),
(u' 0:00:01:34', 3723),
(u' 0:00:01:46', 3979),
(u' 0:00:01:59', 4237),
(u' 0:00:02:14', 4510),
(u' 0:00:02:27', 4727),
(u' 0:00:02:41', 4949),
(u' 0:00:02:51', 5000)