Increasing Client Satisfaction: Request Scheduling for Information Service

The short utility lifetime of performance monitoring information is an important consideration in the design of grid monitoring architecture. Disseminating fresh performance information quickly and accurately to satisfy thousands of potential requests is a challenge for Information Service. We propose a request scheduling mechanism that considers the indexes and urgency of information request. This mechanism is used to schedule the requests waiting on an information Ser- vice which is based on Web Service. Comparing to two existing scheduling mechanisms, the average response time is 57:7% shorter than EDF at best and the dead- line miss rate is 50:4% lower than SRF at best. These results support the usefulness of the request scheduling mechanism as the means for increasing client satisfaction of Information Service.