We are starting to use the Splunk App for Infrastructure to ingest Windows metrics. One of the KPIs we want to measure is percentage of memory used on servers. It appears that is not an available perfmon counter. The only way it seems you would be able to calculate percentage of actual memory used is to get the total memory of the server somehow and then do a calculation like:
(totalMem - Available_MBytes)/totalMem * 100
How are others capturing total memory and calculating memory usage in a percentage?