Hardware Reference
In-Depth Information
The unified miss rate needs to account for instruction and data accesses:
As stated above, about 74% of the memory accesses are instruction references.
Thus, the overall miss rate for the split caches is
Thus, a 32 KB unified cache has a slightly lower effective miss rate than two
16 KB caches.
The average memory access time formula can be divided into instruction and
data accesses:
Therefore, the time for each organization is
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