Parent topic: Capacity of the Machines in your Environment Parent topic: Capacity of the Machines in your Environment

CPU Sizing

CPU Sizing is based on the number of transactions per CPU per second under optimal and regular conditions.

The typical formula for computing CPU sizes is as follows:

Number of transactions = number of concurrent requests * (optimal/regular response times) 0.80 * (Speed of CPU in Mega Cycles) * No. of CPUs

= Mega Cycles per Transaction * No. of Transactions

The reason we use the 0.80 factor is because the threshold for CPU utilization before it is considered a bottleneck is 80%. If you want to take into account future growth you should use a smaller factor.

Parent topic: Capacity of the Machines in your Environment Parent topic: Capacity of the Machines in your Environment

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