Just to confirm, is this memory decline outside of the Cassandra process? If so, I’d look at crond and at memory held for network traffic. Those are the two areas I’ve seen leak. If you’ve configured to have swap=0, then you end up in a position where even if the memory usage is stale, nothing can push the stale pages out of the way.
From: Rahul Reddy <rahulreddy1...@gmail.com> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org> Date: Thursday, June 18, 2020 at 10:27 AM To: "user@cassandra.apache.org" <user@cassandra.apache.org> Subject: Memory decline Message from External Sender Hello, Im seeing continuous decline in memory on a Cassandra instance used to have 20g free memory 15 days back and now its 15g and continue to go down. Same instance it caused the cassandra instance crash before. Can you please give me some pointers to look for which is causing continuous decline in memory
