Processor\% Processor Time
As a general rule, processors that are running for sustained periods at greater than 90 percent busy are running at their CPU capacity limits. Processors running regularly in the 75–90 percent range are near their capacity constraints and should be closely monitored. Processors regularly reporting 20 percent or less utilization can make good candidates for consolidation.
For response-oriented workloads, sustained periods of utilization above 80 percent should be investigated closely as this can affect the responsiveness of the system. For throughput-oriented workloads, extended periods of high utilization are seldom a concern, except as a capacity constraint.
Unique hardware factors in multiprocessor configurations ...
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