Power aware adaptive polling

N Elnozahy Elmootazbellah (Inventor), Eric Van Hensbergen (Inventor)

Research output: Patent


A method for adapting the periodicity of polling for pending service requests, by polling system devices for pending service requests, recording whether or not there was a pending service request and, based on accumulated data, determining whether or not the system devices are idle. Based on this determination, the system may elect to enter a power conservation mode until device activity is signaled, or an adjustable period of time elapses. The adaptation mechanism may alter the periodicity of the timer interrupt, disable or enable device interrupts, and modify variables used to determine system idleness (including minimum latency and minimum idleness thresholds). In this manner, the system can conserve power while maintaining system performance and responsiveness.

Original languageEnglish (US)
Patent numberUS2004123169
IPCH04N 1/ 32 A I
Priority date12/18/02
StatePublished - Jun 24 2004
Externally publishedYes


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