Reserving cache refers to a technique used in computer systems to allocate a portion of the system's memory as a reserved area for temporary storage of frequently used data or instructions. This reserved cache, also known as a reserved cache memory, is typically faster and more accessible than the system's main memory, allowing for quicker retrieval of data and instructions.
The purpose of reserving cache is to enhance the overall performance and efficiency of the system by reducing the time it takes to access frequently used data or instructions. By storing this data closer to the processor or central processing unit (CPU), the system can avoid the delays associated with retrieving data from the slower main memory.
When a program or application requires data or instructions, the system first checks if it is already stored in the reserved cache memory before accessing the main memory. If the required data is found in the cache, it can be retrieved almost instantaneously, significantly reducing the overall processing time.
Reserving cache can be implemented in different levels, such as L1 (Level 1), L2 (Level 2), and L3 (Level 3), with each level representing increasing levels of cache closeness to the CPU. The size of the reserved cache may vary depending on the system's architecture and specifications.
In summary, reserving cache is a memory management technique that allocates a portion of the system's memory for the temporary storage of frequently used data or instructions, improving the system's overall performance by reducing access time to this data and instructions.
