Can anyone figure this out...
The access time for a cache memory is 30ns and that for primary memory is 125ns. (1ns = 1nanosecond = 10^(-9) sec)
75% of memory accesses are for RD's and the hit ratio is 0.85. The cache uses write through on WRs.
a) What is the average access time for the RDs?
b) What is the average access time for the WRs?
c) What is the hit ratio for WRs?
d) What is the overall access time for all memory accesses(that is including all RDs and WRs)?
e) What is the overall hit ratio for all memory accesses?
I have absolutely no idea how to do this.....
The access time for a cache memory is 30ns and that for primary memory is 125ns. (1ns = 1nanosecond = 10^(-9) sec)
75% of memory accesses are for RD's and the hit ratio is 0.85. The cache uses write through on WRs.
a) What is the average access time for the RDs?
b) What is the average access time for the WRs?
c) What is the hit ratio for WRs?
d) What is the overall access time for all memory accesses(that is including all RDs and WRs)?
e) What is the overall hit ratio for all memory accesses?
I have absolutely no idea how to do this.....
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