Apparatus and method for determining a sector division ratio of a shared cache memory

摘要

An apparatus includes a shared cache memory and a controller. The shared cache memory is configured to be divided into sectors by assigning one or more ways to each sector in accordance with a reusability level of data. The controller changes a sector division ratio indicating a ratio between way counts of the divided sectors of the shared cache memory, where the way count is a number of ways assigned to each sector. When first and second jobs are being executed in parallel, in response to a designation of a program of the second job, the controller calculates the sector division ratio, based on data access amount including a size and an access count of data accessed by the first and second jobs and a volume of the shared cache memory, and changes the sector division ratio of the shared cache memory to the calculated sector division ratio.

主权项

1. An apparatus comprising:
a shared cache memory configured to be divided into sectors by assigning one or more ways to each sector in association with a reusability level of data; and a controller configured to change a sector division ratio of the shared cache memory in accordance with a reusability level of data, the sector division ratio indicating a ratio between way counts of the divided sectors of the shared cache memory, the way count being a number of ways assigned to each sector, wherein when a first job and a second job are being executed in parallel, in response to a designation of a program of the second job, the controller:
calculates the sector division ratio, based on data access amount and a volume of the shared cache memory, the data access amount including a size and an access count of data accessed by the first and second jobs, andchanges the sector division ratio of the shared cache memory to the calculated sector division ratio.