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Describe a purpose for the file open system

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1. Describe a purpose for the file open system call that was not mentioned in the text.

2. To be able to make some predictions of disk performance, it is useful to have a model of storage allocation. Suppose that the disk is viewed as a linear address space of N >> 1 sectors, consisting of a run of data blocks, then a hole, then another run of data blocks, and so on. If empirical measurements show that the probability distributions for data and hole lengths are the same, with the chance of either being i sectors as 2-i , what is the expected number of holes on the disk?

Reference no: EM13869505

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