Hi,
EPM parameters in UC_SYSTEM_SETTINGS - if they are still available - are a leftover from versions previous and no longer in use.
EPM means "enhanced performance monitoring". this mechanism was used to collect performance related values, like utilization, db access times, job start times, ...
I don't find these parameters in the initial data files of v6, v8, v9, etc. Have you upgraded to v11 from a previous release?
regards,
Peter