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Comparative study of Resource Utilization with EPR Throttle configured from Power Manager
25 Emergency Power Reduction (EPR) feature with OpenManage Enterprise Power Manager
6 Comparative study of Resource Utilization with EPR Throttle
configured from Power Manager
A comparative study was done to identify the overall power utilization for devices and groups when an EPR
(Throttle) is applied from Power Manager.
Tests have been performed by applying group level EPR Throttle on four PowerEdge R740 servers that are
monitored as part of a Static Group in Power Manager.
• Aggregated Power Utilization by Default:
- The maximum and minimum power utilization for the monitored group was in the range of 167-
482 Watts.
- The average power consumption was ~264 Watts before imposing EPR Throttle on the static
group.
Power History details of a Static Group without EPR (Throttle)
• Aggregated Power Utilization with EPR Throttle
- With reference to the above image, EPR throttle was applied on the Static Group after 16:15 and
the power utilization was rechecked in the next metric gathering interval.
- The average power utilization was brought down to ~ 90 Watts with the maximum, average and
minimum power utilization to the similar values.
Note: With EPR throttle applied on monitored groups, the overall system performance was impacted and the
same was displayed in CPU Utilization metrics of individual devices.