HP 3000 Manuals

HP RXForecast Users Manual for MPE Systems

Business Units Example 

Suppose you generate the following Stats report from a business units
forecast on the CPU Utilization metric:


            

Notice the formula used to calculate this forecast:

FC = INT + SLOPE * BUS UNIT + DOW + WOM + MOQ + QOY

The formula tells you that you need to know the intercept, slope, and the
business unit, as well as seasonality.

Question 

What happens to Global CPU Utilization if the business unit reaches 200?

Answer 

The numbers you need (intercept, slope, seasonality) are given in the
Stats report.  Insert these numbers into the formula as follows:

Forecast = -11.104 + 0.59728 * 200

This forecast shows no seasonality, so you have no seasonality number to
enter.

Forecast  = -11.104 + 119.456

          = 108.352.

So Global CPU should be 100 percent utilized if the business unit reaches
200.  (You cannot have CPU utilization higher than 100 percent.)

MPE/iX 5.0 Documentation