1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 8e78134bbe..b2501ee4d7 100644
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -341,6 +341,10 @@ def setup(config_options):
         sys.exit(0)
 
     events.USE_FROZEN_DICTS = config.use_frozen_dicts
+    synapse.util.caches.TRACK_MEMORY_USAGE = config.caches.track_memory_usage
+
+    if config.server.gc_seconds:
+        synapse.metrics.MIN_TIME_BETWEEN_GCS = config.server.gc_seconds
 
     hs = SynapseHomeServer(
         config.server_name,