How to determine Memory and CPU Utilization?

Hi,

 

 

I'm using iControl API in my Java application to retrieve all the statistical details from BIG-IP. I need to determine the Memory and CPU Utilization of each WideIp, Pool, PoolMember, Server, VirtualServer,.. etc. available in GlobalLB and LocalLB modules. I had gone through the API reference for various StatisticsType. In that I found STATISTIC_GTM_MEMORY_USED_BYTES, STATISTIC_GTM_METRICS_CPU_USAGE and STATISTIC_MEMORY_USED_BYTES are the statistics types that are relevant to Memory and CPU Utilization.

 

 

Do I need to use the above statistics types to obtain the Memory and CPU Utilization? Or I need to use some calculations to determine the values based on other statistic values?