Browse Prior Art Database

Round Robin of Equal Priority Initiators

IP.com Disclosure Number: IPCOM000078638D
Original Publication Date: 1973-Feb-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Rosenthal, D: AUTHOR

Abstract

When more than one initiator has the same dispatching priority, they do not get equal opportunity to be dispatched due to their order on the TCB (Task Control Block) queue.

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Round Robin of Equal Priority Initiators

When more than one initiator has the same dispatching priority, they do not get equal opportunity to be dispatched due to their order on the TCB (Task Control Block) queue.

The solution to the problem is to use a 'round-robin' mechanism, so that initiators of the same priority actually get equal dispatching time. The TCBs representing these initiators will be reordered amongst themselves each time a job terminates, i.e., the first TCB becomes the last TCB, etc. This is accomplished by issuing the CHAP macro with an operand value of zero.

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