Method of using tickets and use cost values to permit usage of a device by a process

摘要

A method for managing the usage of hardware resources by application programs within a computer system is disclosed. A use cost value is set for a device within a computer system. A number of tickets associated with a process is held. Upon execution of the process, the use cost value is compared to the number of tickets held by the process. The process is permitted to use the device based on the result of the comparison.

主权项

1. A method comprising:
monitoring a plurality of environmental information associated with a computer system; setting a use cost value for a device within said computer system based on said monitored environmental information; assigingng a plurality of applications being executed in said computer system into a first group, a second group and a third group; allocating, by a central processor unit, tickets to processes of said applications at respective accumulation rates, wherein the respective accumulation rates are based on the particular group to which the respective applications associated with the respective processes belong, wherein processes of applications in a same group have equal accumulation rates; in response to a request by a process to use a device, determining whether or not a number of tickets held by said process is greater than a use cost value currently associated with said requested device; and in response to a determination that said number of tickets held by said process is greater than said use cost value currently associated with said requested device, permitting usage of said requested device by said process.