Abstract
In this paper we show how existing real-time scheduling theory, developed to analyse the behaviour of tasks executing on processing resources, can be applied to the problem of guaranteeing the performance of multi-media information streams read from a disk system. Analysis is derived that takes into account disk layout and predicts the worst-case response times for disk requests. It is shown how buffer size, priority of request and size of non-pre-emptable operations all crucially affect behaviour. The object of the paper is to define an effective run-time test that can be used to determine if new streams can be accommodated
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