摘要： 缓冲区作为一种缓存关键信息、协调速度差异的重要手段，在计算机工程领域一直扮演着一个不可忽视的角色。缓冲区的大小对其作用的发挥至关重要。为此，在分析现有缓冲技术的基础上，提出了一种基于损失率估算的可变缓冲管理模型。该模型将缓冲区拥塞视为顾客损失，建立M/M/1/K 损失排队系统，根据实时变化的数据流速率和有效处理能力，周期性计算、调整缓冲区大小，以提高资源利用率并保障缓冲区通畅。

关键词: 可变缓冲区；调度；损失率

Abstract: Buffer, as an important tool that is used to store temporarily the key information and to deal with speed difference, always plays a vitalrole in computer engineering field. Buffer size is very important to its performance. So, after current buffer technologies are analyzed, this paper putsforward to a variable buffer management model based on loss-rate estimate(VBMMBLE). The VBMMBLE looks buffer congestion as client loss tobuild M/M/1/K queue system. Based on M/M/1/K queue system, it periodically calculates and adjusts buffer size to improve resourceutilization-rate and keep buffer expedite.

Key words: Variable buffer; Scheduling; Loss-rate