P3
4 5
Snooping At Work II
By snooping the cache controller for processor P3 can take
action in response to P1’s write
P1 reads a into its cache
P3 reads a into its cache
P1 changes a to 5 and writes through to main memory; P3 sees the action and invalidates the location or updates it
P3
P1
4 5
P2
4 5
Memory
a:
a:
