Load balancer health check of EEM causes EEM UI access problems

Document ID : KB000076641
Last Modified Date : 09/04/2018
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Issue:
Our load balancers send an HTTP request string to EEM with an interval of 5 seconds and check whether the HTTP receive string matches the string defined by us or it returns a HTTP code which indicates an error/health problem. 
The HTTP request string is: GET /spin/eiam/eiam.csp HTTP/1.1\r\nHost: ApmEem\r\nConnection: Close\r\n\r\n 
The receive string defined by us is: CA Embedded Entitlements Manager 
We found that there are so many CLOSE_WAIT sockets from our load balancers that it causes the EEM UI to be non-responsive i.e. the main EEM page keeps reloading after it is opened.
Cause:
The root cause was found to be too frequent access of the EEM page from the load balancer.
Resolution:
After changing the EEM page request interval to be greater than 8 seconds and timeout to be greater than 25 seconds, the EEM page loading problem was resolved.