[SOLR-10306] Document vm.swappiness and swapoff in RefGuide

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.5
• Component/s: documentation
• Assignee: Jan Høydahl
• Reporter: Jan Høydahl
• Created: 16/Mar/17 10:10
• Updated: 24/Mar/20 12:44
• Resolved: 24/Feb/20 08:58

Description

I think we should document sane best practice OS level settings in the ref guide, e.g. in https://cwiki.apache.org/confluence/display/solr/Taking+Solr+to+Production

Such as lower system swappiness or ability to use mlockall (like this ES page https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html)

I also found this github repo https://github.com/LucidWorks/mlockall-agent - it is old, did anyone have good experience with the agent for locking Solr's memory?

Issue Links

• is related to: SOLR-11874 Add ulimit recommendations to the "Taking Solr to Production" section in the ref guide
• relates to: SOLR-14335 Lock Solr's memory to prevent swapping
• links to: GitHub Pull Request #1256