Given an initial search query, I'm trying to view daily and monthly job search query runtimes, then average the times out respectively.
Check out the search dashboards in the monitoring console.
I was able to get one step closer with the following search query:
index=_audit savedsearch_name!="" info=completed | eval duration=total_run_time | stats count by _time, savedsearch_name, user, duration | stats avg(duration)