The dispatcher will have a harder time. However, I this is counted under the job's time. TCB and IRB time should be identical. Once your address has control there is no extra overhead. You may get interrupted more often and saving your registers in the RBs might add some negligible time (which I believe is also not counted against you).

/re

Miklos Szigetvari wrote:

Hi

What is the expectable CPU difference depend on system load ?
(same job's CPU time on heavy loaded system or empty system )

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