Tuesday, September 7, 2010

CPU Utilization (Per User/Total/Server)

1)CPU utilization of user process + CPU utilization of the System state => Total CPU utilization at any given point From Subject Received Size
Nagendra Elugoti RE: The page cannot be displayed error-Bachhus Env 1:46 PM 96 KB in time.

2)Server Centric CPU utilization – user = Total usage of CPU by worker> threads inside the application server context(a portion of CPU utilization –> user should technically be a part of Server Centric CPU utilization)

3)CPU utilization – user = Time spent by CPU in executing user program(time> consumed for activities involving kernal working on the job on behalf of the> user program DOES NOT fall into this category.)

Hence, server centric CPU utilization – user can be greater or lesser than CPU utilization – user of the entire box because the boundaries of these two metrics are different(example: 100% of Server Centric CPU utilization – user can possibly be only 10% of CPU utilization – user)

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