JAL case study


At Acme Anvils, the batch workload is divided into two categories:

  • Production.
  • Non-production.

AACS and the users have agreed that production work will always receive higher service. To improve system thruput, AACS separates the workload into:

  • Jobs that do not require tapes (non-setup).
  • Jobs that require tapes.

The non-setup work is further subdivided by CPU time requirements. 2 minutes is the boundary.

To give the users some flexibility, two levels of service are supported:

  • Priority.
  • Standard.

Because BMC ThruPut Manager automates classing and priority decisions, users need only know how to request priority service. For Acme Anvils, this is done by simply submitting jobs in class B rather than the default class of A.

To control limited resources, AACS also wants to implement these rules:

  • Jobs requiring more than two minutes of CPU must be classed separately.
  • Jobs that need between 600 megabytes and 1 gigabyte of temporary DASD space must be placed in a special class (only one initiator).
  • Jobs asking for more than twelve tape units, or jobs needing more than 1 gigabyte of temporary DASD space, are to be treated as errors.

 

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