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GATE preparation for Computer Science & Information Technology
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Calculate the impact on performance, i.e. CPU time, if cache miss penalty is 3 clock cycles; the entire instruction memory takes 8 cycles (ignoring memory stalls). Assume miss rate is 11% and there is an average of 6 memory reference per instruction. Calculate the impact on CPC time, if cache is used over without cache.

 
25% improvement
25% degradation
No change
None of the above

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Rahul

Not able to understand properly explanation.