my customer users complain because top and vmstat are realtime tools. so this is what can recommend
1) OA Agent collects performance data every 300s. use the parm file to increase intervall of collected data to 15s . There is a policy in Infrastructure MP so you can deploy the settings on all agents.
2) this document helps to understand why top and OA agent data collectons differs:
https://softwaresupport.softwaregrp.com/group/softwaresupport/search-result/-/facetsearch/document/KM1149987
3) use the metric dictionary of the OA Agent to understand what the metrics mean. i build dashboards with all metrics and the definitions side by side. so left the graphs , right the definiton. so its easier to identify which metrics are useful.
4) build your own dashboards as HP default Dashboards are not user friendly. e.g. change datapoints to raw so you can make use of the data collection intervall of 15s
5) if you use omi enable the realtime license of the agent (oalicense tool) so you can use the realtim emetrics. this license is included in opsbridge premium.
the features of the performance dashboards in Omi is very good, unfortunately most is not documented at all, especially how to build great dashboards. so reverse engeneering and try and error is the only option. not to mention that i found some defects on my journey. i build dozens of dashbord for one of my custumer, a global car manufacturer. now they start to get happy and ready to use it in daily operations.
