| We noticed XWiki instances becoming slow because of saving large groups (different to XWikiAllGroup that can be set implicit) that are mapped from a third-party authentication source (like LDAP, OpenID, Trusted Authentication framework …)
An XWiki instance with performance issues related to large groups can be diagnosed as such :
- Slowness from users when they attempt to login. Once the users have logged-in, the navigation is better.
- The XWiki instance contains one or multiple groups (different than XWikiAllGroup) that have a lot of members.
- Large groups identified above have a large history : when clicking on the “History” tab of the group, you will see 1000+ versions in the group history.
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