Mathematics, 19.12.2019 07:31 simonthang8
For a given piece of code, the hit ratio of first cache is 0.1 and the hit ratio of second cache is 0.3. the time required to access the first cache is 10 nanoseconds, the second cache is 100 nanoseconds, and the time to access the underlying physical memory is 1 microsecond, what is the effective memory access time for the piece of code?
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![= [H_1*T_1]+[(1-H_1)*H_2*T_2]+[(1-H_1)(1-H_2)*H_m*T_m]](/tpl/images/0425/7853/91e15.png)
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