What is Hit Ratio in Operating System?

Learn Hit Ratio definition in operating system with explanation to study “What is Hit Ratio”. Study hit ratio explanation with operating system terms to review operating system course for online degree programs.

Hit Ratio Definition

  • In a two level memory, the fraction of all memory accesses that are found in the faster memory.

    Operating Systems by William Stallings



Hit Ratio Explanation

The performance of memory elements is frequently measured in terms of quantity, this measurement is known as hit ratio. When the CPU needs to find the word in the cache, if the word is found in the cache, it is in main memory as counted miss. The hit ratio is the number of hits divided by the total number of requests.

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