diff -Nru neutron-2014.1.5/debian/changelog neutron-2014.1.5/debian/changelog
--- neutron-2014.1.5/debian/changelog	2016-02-29 06:21:59.000000000 -0700
+++ neutron-2014.1.5/debian/changelog	2016-07-05 15:09:50.000000000 -0700
@@ -1,3 +1,11 @@
+neutron (1:2014.1.5-0ubuntu5) trusty; urgency=medium
+
+  * Backport performance fix by refactoring logging statements. (LP: #1414218):
+    - d/p/refactor-log-in-loop.patch: do not perform debug trace with each
+      iteration through the loop of ports, instead log it once at the end.
+
+ -- Billy Olsen <billy.olsen@canonical.com>  Tue, 05 Jul 2016 15:07:28 -0700
+
 neutron (1:2014.1.5-0ubuntu4) trusty; urgency=medium
 
   * neutron-openvswitch-agent stuck on 'q-agent-notifier-port-update_fanout-x'
diff -Nru neutron-2014.1.5/debian/patches/refactor-log-in-loop.patch neutron-2014.1.5/debian/patches/refactor-log-in-loop.patch
--- neutron-2014.1.5/debian/patches/refactor-log-in-loop.patch	1969-12-31 17:00:00.000000000 -0700
+++ neutron-2014.1.5/debian/patches/refactor-log-in-loop.patch	2016-07-05 15:07:24.000000000 -0700
@@ -0,0 +1,50 @@
+From 9919e559a006057984e8f091e8810ce8e2ccbea5 Mon Sep 17 00:00:00 2001
+From: Billy Olsen <billy.olsen@canonical.com>
+Date: Fri, 23 Jan 2015 15:50:40 -0700
+Bug: https://bugs.launchpad.net/neutron/+bug/1414218
+Forwarded: https://review.openstack.org/#/c/149784
+Subject: [PATCH 1/1] Refactor logging in loop to only log debug messages once
+
+Logging entries in a loop to a file can be expensive for a large
+number of objects (e.g. ports) in a loop. Rather than perform the
+overhead of logging a debug entry for each line within the hosts
+file, move the debug trace of the contents to after the loop to
+bulk up the I/O operations.
+
+Conflicts:
+        neutron/agent/linux/dhcp.py
+
+(cherry-picked from d93e0098ebd5f333d6f496f10a663cd4351410ae)
+Change-Id: I3ad7864eeb2f959549ed356a1e34fa18804395cc
+Closes-Bug: #1414218
+
+(cherry picked from commit 70786c65773ca4e4bc8875842e733a0bcabd4ed4)
+---
+ neutron/agent/linux/dhcp.py | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+Index: new/neutron/agent/linux/dhcp.py
+===================================================================
+--- orig/neutron/agent/linux/dhcp.py	2016-07-05 15:01:16.951158909 -0700
++++ new/neutron/agent/linux/dhcp.py	2016-07-05 15:01:16.947158851 -0700
+@@ -507,10 +507,6 @@
+ 
+             ip_address = self._format_address_for_dnsmasq(alloc.ip_address)
+ 
+-            LOG.debug(_('Adding %(mac)s : %(name)s : %(ip)s'),
+-                      {"mac": port.mac_address, "name": name,
+-                       "ip": ip_address})
+-
+             if getattr(port, 'extra_dhcp_opts', False):
+                 if self.version >= self.MINIMUM_VERSION:
+                     set_tag = 'set:'
+@@ -523,7 +519,8 @@
+                           (port.mac_address, name, ip_address))
+ 
+         utils.replace_file(filename, buf.getvalue())
+-        LOG.debug(_('Done building host file %s'), filename)
++        LOG.debug('Done building host file %s with contents:\n%s', filename,
++                  buf.getvalue())
+         return filename
+ 
+     def _read_hosts_file_leases(self, filename):
diff -Nru neutron-2014.1.5/debian/patches/series neutron-2014.1.5/debian/patches/series
--- neutron-2014.1.5/debian/patches/series	2016-02-26 13:17:33.000000000 -0700
+++ neutron-2014.1.5/debian/patches/series	2016-07-05 15:01:12.000000000 -0700
@@ -6,3 +6,4 @@
 fix-reconnect-race-condition-with-rabbitmq-cluster.patch
 ovs-restart.patch
 fix-neutron-agent-fanout-queue-not-found-loop.patch
+refactor-log-in-loop.patch