Re: Memory decline

2020-06-19 Thread Rahul Reddy
Hi jeff, Provided information below. How can i check how much memory allocated to direct memory for jvm On Thu, Jun 18, 2020 at 11:38 AM Jeff Jirsa wrote: > Some things that are helpful: > > - What version of Cassandra > 3.11.3 > - How much memory allocated to heap > Max_heap_size 8G Heap_new_

Re: Memory decline

2020-06-18 Thread Jeff Jirsa
Some things that are helpful: - What version of Cassandra - How much memory allocated to heap - How much memory allocated to direct memory for the JVM - How much memory on the full system - Do you have a heap dump? - Do you have a heap histogram? - How much data on disk? - What are your compressio

Re: Memory decline

2020-06-18 Thread Reid Pinchback
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, nothin