Is there a way to force a maximum CPU% utilisation for a specific task?

Please correct me if I'm wrong here, but it is my understanding that WLM
only really starts 'doing it's stuff' when the system as a whole is heavily
loaded.
For example:
 - If my system is running at 80%, and a new incoming task wants 50% CPU,
then it is allowed to run, but it only gets a maximum of 20% (obviously),
and WLM starts switching task dispatch priorities around to try and
maintain the service levels defined in the policy.
 - On the other hand, if the system is only 20% busy and the 50%-usage task
comes along, then it is allowed to run and WLM just lets it happen

What I want to do is to limit specific tasks to a maximum CPU% value no
matter what the overall loading is.

Regards
Sean

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