Once installed, this plugin requires no additional configuration and can just be used out of the box.
You can however, tweak gerrit.config, as follows
To increase throughput and minimize resource consumption this plugin makes use of an internal cache to store statistics associated to specific object ids.
Depending on your needs you can reserve more memory to it, set expiration policies and decide whether you want to persist it on disk.
To achieve this, this plugin makes use of Gerrit built-in cache mechanism as described here. As an example, you could add the following stanza to the
[cache "analytics.commits_statistics_cache"] memoryLimit = 100000 diskLimit = 52428800
diskLimit: disk storage for the cache is disabled