Detecting High Processor Utilization

Detecting a high processor utilization is important to prevent controller overloading that can lead to unpredictable performance degradations. To prevent such problems administrators need to identify the controller that has become a bottleneck.

Verifying the Processor Utilization Parameter for a Controller

1.	In the console, double-click the ProcessorUtilization parameter of the SEN_EMC_CONTROLLER_CLAR application class

2.	A graph is automatically displayed in the console's graph pane

GRAPH_Processor_Utilization

Viewing a Controller's Processor Utilization as a graph

A processor utilization over 80% means that this controller is overloaded and that the controller constitutes a bottleneck for the disk array.

Verifying the Transfer Byte Rate of a Controller

1.	In the console, double-click the TransferByteRate parameter of the SEN_EMC_CONTROLLER_CLAR application class.

2.	A graph is automatically displayed in the console's right pane.

GRAPH_Controller_Transfer_Byte_Rate

Controller's TransferByteRate Parameter as a Graph

If this value stays low – while the overall processor utilization is high – it indicates that the controller is performing "non productive" tasks. It then may become critical to determine the source of activity that generates the high processor utilization.

By default, the processor utilization parameter will display a warning when reaching 80% and an alert when reaching 90 %.