How weighting factors work

The following questions and answers pertaining to the previous example might help.

• How were the weighting factors selected in Example-3-Creating-a-composite-workload?

  These weighting factors were selected on the basis of the previously stated criteria, as follows:

  • ACCTTSO is assigned a weighting factor of 68 percent, roughly twice as much as all other workloads combined (32 percent), and at least 60 percent of ACCTALL’s total weight.
  • All batch workloads are equally important, worth 8 percent of ACCTALL’s total weight.

• What do the weighting factors mean?

  These weighting factors mean that even if three of the batch jobs are meeting 100 percent of their service objectives, but ACCTTSO is meeting only 20 percent, ACCTALL as a whole will not be doing well. Remember, ACCTTSO counts for a full 60 percent of ACCTTSO’s total performance.

• How will the service objectives of ACCTALL be monitored?

  A composite workload’s service objectives are monitored according to the time periods that are specified by its constituent workloads. In this case, the service objectives for ACCTTSO are monitored from 7:00 A.M. to 8:00 P.M., while the objectives for the batch work are monitored from 7:00 P.M. to 6:00 A.M. Therefore, the service objectives of ACCTALL will be monitored from 7:00 A.M. to 6:00 A.M.