Abstract
A multidisk system, evaluated as an M /G /1 queueing model, is analyzed for two different priority disciplines —alternating priority and head of the line. Different measures of system effectiveness, namely, mean response time, mean queue length, and mean delay time, have been obtained for requests (jobs) from two different classes—priority and ordinary. The mean busy period and the squared coefficient of variation of busy periods of a disk in the multidisk system have also been evaluated. The behavior of requests in alternating priority and head of the line is compared both analytically and numerically. These results may prove to be useful decision-making tools for system analysts and computer engineers, as they influence the design and waiting measures of a system.
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