If the authentication takes longer than expected, it may be difficult to track down the bottleneck. To simplify this process, version 6.0.11 introduces a specific logger

de.resolution.samlsso.progress 

When this logger is set to INFO, each user's authentication can be traced in the log. 
You need to enable that logging on each of your data center nodes. 

2022-06-29 10:40:40,626+0000 http-nio-8080-exec-1 INFO anonymous 640x469x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] Incoming request to SamlSsoServlet
2022-06-29 10:40:40,663+0000 http-nio-8080-exec-1 INFO anonymous 640x469x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Initiating SAML-authentication
2022-06-29 10:40:40,670+0000 http-nio-8080-exec-1 INFO anonymous 640x469x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Sending SAML message to IdP
2022-06-29 10:40:49,432+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] Incoming request to SamlSsoServlet
2022-06-29 10:40:49,525+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Loaded SAML message
2022-06-29 10:40:49,608+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Calling LoginHandler
2022-06-29 10:40:49,608+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Trying to load user
2022-06-29 10:40:49,608+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Updating user from connector
2022-06-29 10:40:50,000+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Trying to find user in Directory
2022-06-29 10:40:50,001+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Done finding user
2022-06-29 10:40:50,004+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Authorizing user and establishing session
2022-06-29 10:40:50,030+0000 http-nio-8080-exec-13 INFO anonymous 640x471x1 1qc8apj 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Done handling SAML message
2022-06-29 10:40:54,623+0000 http-nio-8080-exec-10 INFO jb@azuread.lab.resolution.de 640x485x1 1l8evkp 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso/logout [d.resolution.samlsso.progress] 6LBBL : Initiating Single Logout
2022-06-29 10:40:54,645+0000 http-nio-8080-exec-10 INFO jb@azuread.lab.resolution.de 640x485x1 1l8evkp 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso/logout [d.resolution.samlsso.progress] 6LBBL : Sending SAML logout message
2022-06-29 10:40:56,080+0000 http-nio-8080-exec-24 INFO anonymous 640x486x1 84yxgf 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] Incoming request to SamlSsoServlet
2022-06-29 10:40:56,104+0000 http-nio-8080-exec-24 INFO anonymous 640x486x1 84yxgf 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Loaded SAML message
2022-06-29 10:40:56,104+0000 http-nio-8080-exec-24 INFO anonymous 640x486x1 84yxgf 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Handling LogoutResponse
2022-06-29 10:40:56,106+0000 http-nio-8080-exec-24 INFO anonymous 640x486x1 84yxgf 109.233.142.93,100.100.0.19 /plugins/servlet/samlsso [d.resolution.samlsso.progress] 6LBBL : Done handling SAML message
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