一种基于负载的短信中心性能优化策略

A Load Based Optimization Method for the Performance of SMSC

随着短信业务的迅猛发展,短信中心的性能问题也逐渐浮出水面.在系统高负载,甚至超载下怎样保证短信中心能够正常运行并维持较好的性能成为了引人注目的焦点.本文针对其原有的按时重发策略在系统高负载时容易因为重发造成系统超载的缺点,提出了一种新的具有负载适应性的短信重发策略———基于负载的重发策略.该策略通过将系统的首次下发短信与重发短信的下发流量进行错峰,将系统下发流量控制在系统设置的阀值之内;在接近系统处理能力的高负载环境下可以有效减少拥塞的发生,从而提高短消息中心在高负载下的可靠性与性能.

With the rapid development of short message business, the performance problem of short message service center (SMSC) has emerged. How to maintain the sound operation of the message center and achieve satisfactory performance under heavy load or overload has become a focus of concern. Focusing on the defects of the existing time-based retransmission policy, which tends to bring about system overload under heavy load, this paper presents a new workload-based resend policy of SMSC for workload adaptability. By staggering the peaks of the first send flow and the resend flow, this policy could control system delivery workflow in a configured limited value and reduce the risk of SMSC congestion under load near the full processing capacity of the system. Therefore, it will improve the reliability and performance of SMSC under heavy load.