Question: We want to add one more cache ( L - 2 cache ) to the same system presented in question # 1 and evaluate it

We want to add one more cache (L-2 cache) to the same system presented in question # 1 and evaluate it. Its access time is 5 ns and global miss rate to main memory is 0.5%. What is an effective CPI (total CPI ) with two level caching? (Total CPI = Base CPI + Primary stalls per instruction + Secondary stalls per instruction)
We want to add one more cache (L-2 cache) to the

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