title: How to decrease Logstash Memory Usage
body: <p>I am using Logstash-5.6.5 (in Windows) running in a standalone system (no cloud or cluster). Planning to watch some log files and post it to locally run elasticsearch. But when checked the Logstash's memory usage, without a configuration to watch any file it is showing around 600MB memory usage. When I add input file pipeline configurations further it adds memory futher (For watching 3 log files it added up to 70MB, but I am planning to add more upto 20 logs). 
  <br><br>1. Is it the expected behaviour? 
  <br>2. Is there any way to reduce the huge memory usage by logstash?</p>