diff -Pdpru icinga2-2.9.1.orig/etc/icinga2/features-available/graphite.conf icinga2-2.9.1/etc/icinga2/features-available/graphite.conf
--- icinga2-2.9.1.orig/etc/icinga2/features-available/graphite.conf	2018-07-24 12:48:12.000000000 +0200
+++ icinga2-2.9.1/etc/icinga2/features-available/graphite.conf	2018-09-26 11:50:37.417701228 +0200
@@ -3,7 +3,10 @@
  * performance data to a graphite tcp socket.
  */
 
+library "perfdata"
+
 object GraphiteWriter "graphite" {
   //host = "127.0.0.1"
   //port = 2003
+  //enable_send_thresholds = true
 }