I've often disabled swap on systems running high-throughput databases like ElasticSearch and Cassandra because paging to disk will cause one or several nodes to

I've often disabled swap on systems running high-throughput databases like ElasticSearch and Cassandra because paging to disk will cause one or several nodes to slow down, which affects the performance of the whole cluster. The better thing to do in those cases is let the node fail right away by disabling swapping. I fact, elasticsearch prefers to be run with `swapoff` : https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration-memory.html https://www.elastic.co/guide/en/elasticsearch/reference/curr...