As we migrate from Elasticsearch to Opensearch in T370147, we'll be operating the cluster with a smaller number of hosts. Additionally, there could be performance regressions that are not apparent until we're running at scale in a production cluster.
Under these circumstances, we'd like to maximize the available compute power by enabling the CPU performance governor. For context, we enabled the governor for WDQS hosts in T336443 and saw a significant increase in performance.
Note that this will increase electricity usage, so we'll need to involve DC Ops before making any changes.
Creating this ticket to:
- Provide the full scope of proposed changes in terms of chassis/rack/row. The fault tolerance tool should be helpful for this.
- Discuss with DC Ops and come up with an agreed-upon plan.
- Implement the plan