Best Answer: Why Cache Memory Is Used in Linux?

Linux always tries to use RAM to speed up disk operations by using available memory for buffers (file system metadata) and cache (pages with actual contents of files or block devices). This helps the system to run faster because disk information is already in memory which saves I/O operations.

What is cache memory in Linux?

Cache memory has an operating speed similar to the CPU itself so, when the CPU accesses data in cache, the CPU is not kept waiting for the data. Cache memory is configured such that, whenever data is to be read from RAM, the system hardware first checks to determine if the desired data is in cache.

What is the purpose of using cache memory?

Cache memory is used to reduce the average time to access data from the Main memory. The cache is a smaller and faster memory which stores copies of the data from frequently used main memory locations. There are various different independent caches in a CPU, which store instructions and data.