Session can't release

Thanks Colin, I observed that the log will show the accumulate value and it will decrease normally to 0 when CLIENT CLOSE the session. It is the normal expected result.

 

 

However, I found that sometimes the value can't decrease if the request is over than the total_active_client and the log show the session still keep the value not reset to 0. So strange that the iRules got 2 different behavior.

 

 

Is there need any changes for this iRules to make it stable? Please kindly help, thank you very much.