Performance issue with 4.2.1

John C. Pfeifer pfeifer at
Wed Oct 5 20:16:53 UTC 2022

We are running our 4.2.1 IdP in AWS (SAML & CAS, w/ LDAP) with no issues. It is essential that you properly size the AWS instances (our tomcats run on t3.large). If you run out of CPU credits or IO credits, your performance will fall off the proverbial cliff. This can be seen in the metrics available on the AWS console.

John Pfeifer
Division of Information Technology
University of Maryland, College Park

> On Oct 5, 2022, at 3:20 PM, Mathew, Sunil via users <users at> wrote:
> Hi,
> We currently have Shibboleth IdP 3.1.1 on-prem that is protected by CAS using remote user as principal. We are seeing significant performance issues with the 4.2.1 version deployed in AWS cluster and also in on-prem on a single server. Here are the numbers:

> Please let me know if anyone has noticed performance issues with the 4.2.1 version of Shibboleth IdP?
> Regards,
> Sunil
> -- 
> For Consortium Member technical support, see <>
> To unsubscribe from this list send an email to users-unsubscribe at <mailto:users-unsubscribe at>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the users mailing list