在WEB SERVER中实现响应时间预测和准入控制

RESPONSE DELAY PREDICTION BASED ADMISSION CONTROL SCHEDULE

WEB服务已经被广泛应用,我们必须为相应的增值服务提供可靠的服务质量保证。介绍了一个在WEBSERVER中进行准入控制的方法,该方法周期性地预测服务器负载,并根据预测结果实现系统资源的有效分配和准入控制。

In this paper, an efficient admission control algorithm is proposed to provide different levels of services based on the server workload characteristics. Service quality is ensured by periodical allocation of system resources based on the estimation of request rate and service requirements of prioritized tasks. Admission of lower priority tasks is restricted during high load periods to prevent denial-of-services to high priority tasks. Response delays of the high priority tasks are bounded by the length of the prediction period.