The ES docs[0] state that swap should be disabled (or at least reduced) and suggest three ways to accomplish this goal. Of the three, I prefer using sysctl to adjust vm.swappiness since this is straightforward to do via Puppet. [0] https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration.html

https://github.com/mozilla/socorro-infra/pull/166 fwiw :)