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Implement a program to measure the impact of application-level buffer sizes on read time. This involves writing to and reading from a large file (say, $2$ GB). Vary the application buffer size (say, from $64$ bytes to $4$ KB). Use timing measurement routines (such as gettimeofday and getitimer on UNIX) to measure the time taken for different buffer sizes. Analyze the results and report your findings: does buffer size make a difference to the overall write time and per-write time?

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