Performace Issue

Scenario1: We have servers in US and Indian users are saying there is a performance issue accessing the servers in US, now how do you resolve and what log files you will look into?

Performance issue can be due to many reasons
1) Network
2) Webserver
3) Appserver
4) DB
5) Hardware

The common steps to troubleshoot are to identify where is the performance issue

1) Try to access the url from ur system to identity if is not specif to the users
2) Try ping to the webserver to see if there is any network latency
3) See the access & error logs of webservers
4) check the appservers logs like systemout and systemerr to see if there are any OOM and hung threads ( if yes troubleshoot it accordingly
5) Check the plugin log to see if there are too many users accessing and there are few connection confiured between the webserver and appserver
6) Check the connections to the DB .. is it maxed out
7) check the cpu and memory utilisation of the system




Scenario2: If you have to federate a Application Server to DMGR in US, how will you do it, what parameters to look for?
Federation will be same whereever they are located but there are some checklist
1) Most imp -- ensure that the firewall ports ( all the 8-10 ports) between the dmgr and the appsever are opened bothways .. otherwise u will not be able to federate it
2)Ensure that the DMGR is running
3) appropriate permissions are given
4) once above is validated then execute the ./addNode.sh dmgr_ip port -user adfdf -password 34324