Caches can improve memory system performance in the following ways
Faster access time: Caches are faster than main memory, allowing for quicker access to frequently used data and instructions.
Reduced latency: By storing data in a faster, more accessible location, caches reduce the time it takes for the processor to access main memory.
Improved hit ratio: Caches increase the hit ratio, which is the number of times the processor finds the required data in the cache, reducing the need for slower main memory access.
Increased instruction-level parallelism: Caches enable the processor to execute instructions more quickly, allowing for increased instruction-level parallelism and improved overall system performance.
Better system responsiveness: By reducing the time it takes for the processor to access data, caches improve system responsiveness and overall user experience.
Efficient use of main memory: Caches reduce the number of accesses to main memory, which can be slower and more power-hungry, making the system more efficient.
Improved multi-core performance: In multi-core systems, caches can reduce contention between cores and improve overall system performance.