AEM How to identify the check session count

Issues:

• In many cases, the problem is the number of open sessions it too large.
• At some point, it slows down processing.

Solution:

• To find out if this is the case, run

jps -l (to get the process id of the Java process)
jmap -histo | grep CRXSession (to get the number of open sessions)

Conclusion:

• If no of opened sessions count is greater then some hundred, then there is a possibility of session related issues.
• Possibly a session pool is used (depending on the version of CRX / CQ there could be a hotfix for the given problem),
• or an internal (possibly application level) cache references sessions. To analyze where those sessions are opened.
• Generate thread dump and heap dump to find out the RCA.
• Use the eclipse MAT for heap dump analysis and TDA or fast thread for the thread dump analysis.