Technical Report CS0078

Title: Queueing Phenomena at Computing Systems Storage Devices
Authors: Micha Hofri
Abstract: In this paper we adopt the view of auxiliary storoge devices in a oomputer system-typically disks and drums -as service facilities, responding to data transmission requests from active tasks. The enormous disparities in processing rates between the different system components give rise to a variety of congestion phenomena. We describe the physical properties of these devices and various methods of scheduling their activities with their motivations. Several examples are presented, where queueing-theoretical analysis was found a useful tool; some open problems are suggested.
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