Cache Memory and Mapping Functions Cache memory is a small, fast memory that is used to store frequently used data. It is much faster than main memory, whic...
Cache Memory and Mapping Functions
Cache memory is a small, fast memory that is used to store frequently used data. It is much faster than main memory, which is used to store less frequently used data. This allows the computer to access data much faster, which can improve the performance of the entire system.
Cache memory functions:
Stores frequently used data in a faster memory.
Provides data to the processor quickly.
Uses a separate memory from main memory.
Can be divided into multiple levels for efficient access.
Cache memory mapping functions:
The operating system uses cache memory mapping functions to map virtual memory to physical memory.
This allows multiple programs to share the same memory space.
The operating system uses page tables and virtual addresses to keep track of which data is in cache and which data is in main memory.
When a program wants to access data, the operating system checks the cache first.
If the data is found in the cache, it is returned immediately.
If the data is not found in the cache, the operating system retrieves it from main memory and stores it in the cache