Problem $3$

A computer system has a two$-$level cache processor with the following characteristics:

Level $1$:

Split configuration with:

I miss rate $4\%$

D miss rate $8\%$

Frequency of data accesses is $50\%$

Hit time at Level$1$ is $0\mathrm{.}8ns$

Level$2$ cache:

Unified configuration with:

Miss rate $25\%$

Hit time at Level $2$ is $3ns$

The main memory which exhibits $100$ ns access time.

Find the AMAT if only level$1$ was used, and when both levels are used

Compare the AMAT for:

the system with only L$1$

the system with L$1$ and L$2$