UK Access Management Federation
for Education and Research
Shibboleth IdP 4.1.4 / Jetty v9.4.39 known issue with high CPU usage
Posted on Thursday, 27 January 2022
We've become aware of an issue with Jetty version 9.4.39 where some deployers of this version are experiencing unexplained high CPU usage which, in some cases, causes the service to become unusable.
We believe this applies to deployers of:
- Shibboleth Identity Provider v4.1.4 using Windows MSI and the bundled Jetty
- Other platforms (such as Linux) using Jetty 9.4.39
Other versions of Jetty may be affected.
If you have any queries about this recommendation, please contact email@example.com.
Update to UK federation Rules of Membership
Posted on Friday, 14 January 2022
The UK federation has revised the Rules of Membership to reflect the introduction of charging for Service Provider members effective from January 1st 2022.
The revised rules can be found here: