Miss Ratio

Miss Ratio is a measure used in computing to indicate how often a system's cache or memory misses, meaning when the data needed isn't found locally and must be fetched from a slower source. It is calculated by dividing the number of misses by the total number of data requests, usually expressed as a percentage or a decimal. A lower Miss Ratio means the system is efficiently retrieving data from the cache, reducing delays. Conversely, a high Miss Ratio suggests that data frequently misses the cache, leading to slower performance due to more data being retrieved from slower memory or storage.