# Improving performance

If you change the number of compute engine workers in the Sonar Qube Server UI, you must restart each application node for the change to take effect. You can configure up to 10 workers replicated across each application node. The number of workers is global and cannot be configured at the application node level. See [Improving performance](/sonarqube-server/2025.5/server-update-and-maintenance/maintenance/improving-performance.md) for more information.

For example, if you set 4 workers in the SonarQube Server UI and you have 2 application nodes, you have configured 8 workers total after you finish restarting all the application nodes (4 workers \* 2 nodes = 8 workers total).

## Related pages <a href="#related-pages" id="related-pages"></a>

* [DCE topology](/sonarqube-server/2025.5/server-installation/data-center-edition/dce-topology.md)
* [Starting and stopping cluster](/sonarqube-server/2025.5/server-installation/data-center-edition/starting-stopping-cluster.md)
* [Monitoring](/sonarqube-server/2025.5/server-update-and-maintenance/data-center-edition/monitoring.md) your cluster
* [Scaling](/sonarqube-server/2025.5/server-update-and-maintenance/data-center-edition/scaling.md) your cluster
* [Updating](/sonarqube-server/2025.5/server-update-and-maintenance/data-center-edition/updating.md) your cluster version


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