diff -Nru landscape-client-18.01/debian/changelog landscape-client-18.01/debian/changelog
--- landscape-client-18.01/debian/changelog	2018-11-27 14:24:22.000000000 +0000
+++ landscape-client-18.01/debian/changelog	2019-02-08 17:02:17.000000000 +0000
@@ -1,3 +1,10 @@
+landscape-client (18.01-0ubuntu3.3) bionic; urgency=medium
+
+  * debian/patches/mem-usage-1685885.patch: Reduce memory usage by
+    unused twisted logs. (LP: #1685885)
+
+ -- Simon Poirier <simon.poirier@canonical.com>  Fri, 08 Feb 2019 12:02:17 -0500
+
 landscape-client (18.01-0ubuntu3.2) bionic; urgency=medium
 
   * debian/patches/nutanix-kvm.patch: Update vm_info.py to include Nutanix
diff -Nru landscape-client-18.01/debian/patches/mem-usage-1685885.patch landscape-client-18.01/debian/patches/mem-usage-1685885.patch
--- landscape-client-18.01/debian/patches/mem-usage-1685885.patch	1970-01-01 00:00:00.000000000 +0000
+++ landscape-client-18.01/debian/patches/mem-usage-1685885.patch	2019-02-08 17:02:17.000000000 +0000
@@ -0,0 +1,30 @@
+Description: Reduce memory usage by unused twisted logs.
+ This initializes the twisted logging to clear its buffer.
+Author: Simon Poirier <simon.poirier@canonical.com>
+Origin: upstream, https://github.com/CanonicalLtd/landscape-client/commit/7f98306e3159e956798b70d2b5fc8c0773373fdd
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1685885
+Last-Update: 2019-02-08
+
+diff --git a/landscape/client/deployment.py b/landscape/client/deployment.py
+index d5ac5aeb..8c2f905e 100644
+--- a/landscape/client/deployment.py
++++ b/landscape/client/deployment.py
+@@ -2,6 +2,7 @@ import os.path
+ import sys
+ 
+ from optparse import SUPPRESS_HELP
++from twisted.logger import globalLogBeginner
+ 
+ from landscape import VERSION
+ from landscape.lib import logging
+@@ -16,6 +17,10 @@ def init_logging(configuration, program_name):
+     logging.init_app_logging(configuration.log_dir, configuration.log_level,
+                              progname=program_name,
+                              quiet=configuration.quiet)
++    # Initialize twisted logging, even if we don't explicitly use it,
++    # because of leaky logs https://twistedmatrix.com/trac/ticket/8164
++    globalLogBeginner.beginLoggingTo(
++        [lambda _: None], redirectStandardIO=False, discardBuffer=True)
+ 
+ 
+ def _is_script(filename=sys.argv[0],
diff -Nru landscape-client-18.01/debian/patches/series landscape-client-18.01/debian/patches/series
--- landscape-client-18.01/debian/patches/series	2018-11-27 14:24:22.000000000 +0000
+++ landscape-client-18.01/debian/patches/series	2019-02-08 17:02:17.000000000 +0000
@@ -6,3 +6,4 @@
 post-upgrade-reboot.patch
 unicode-tags-script.patch
 1616116-resync-loop.patch
+mem-usage-1685885.patch