--- a/mod_log_events_by_memory/README.markdown	Mon Jun 10 15:23:52 2019 +0200
+++ b/mod_log_events_by_memory/README.markdown	Thu Jun 13 00:24:54 2019 +0200
@@ -6,3 +6,9 @@
 log_memory_threshold = 20*1024
 ```
 
+Prosody runs on Lua which uses automatic memory management with garbage
+collection, so the numbers reported by this module are very likely to be
+useless for the purpose of identifying memory leaks. Large, but
+temporary, increases in memory usage can however highlight other kinds
+of performance problems and sometimes even provide hits for where to
+look for memory leaks.