help2002

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help2002

This forum is provided to promote discussion amongst students enrolled in CITS2002 Systems Programming.
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1st project 1usec increase from running --> sleeping (all 5)

4:51am Wed 6th Sep, Christopher M.

ANONYMOUS wrote:

> I was wondering why there is a 1usec increase from 15-17usec to announce the running --> sleeping context changes, as this is not stated in the project guidelines.

A process that is sleeping is blocked (for a period of time), so the transition time for Ready->Blocked applies. If you review the 5-state model, [CITS2002]⬈ there is only a single Blocked state, but that can be implemented, and actions described, in a number of ways. Some students are implementing 'Blocked' as a single queue, including Sleeping, Waiting, and I/O, while some others are implementing distinct queues for each of the 3 reasons for being blocked. Hope that helps,