I setup an EM on a Redhat 6 Linux machine and have the following specs.
Processors - 4
RAM - 2 GIG
I notice slowness in Investigator and came to know 4 GIG ram is required.
please advise for any other additional requirements for effective EM.
This is the link to the 9.7 documentation. Most recent (10.0) is https://wiki.ca.com/display/APMDEVOPS98/CA%20APM%20Sizing%20Recommendations!
You should read the APM Sizing and Performance Guide.
This Guide has few good chapters that should give you idea what resources would be need to monitor your environment.
CA APM Example Deployments
CA APM Sizing Recommendations
CA APM Sizing and Performance FAQs