On group communication support in CORBA

Shivakant Mishra, Lanlan Fei, Xiao Lin, Guming Xing
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引用次数: 22

Abstract

Current group communication services have mostly been implemented on a homogeneous, distributed computing environment. This limits their applicability because most modern distributed computing environment are heterogeneous in nature. This paper describes the design, implementation, and performance evaluation of a CORBA group communication service. Using CORBA to implement a group communication service enables that group communication service to operate in a heterogeneous, distributed computing environment. To evaluate the effect of CORBA on the performance of a group communication service, this paper provides a detailed comparison of the performance measured from three implementations of an atomic broadcast protocol and a group membership protocol. Two of these implementations use CORBA, while the third uses UDP sockets for interprocess communication. The main conclusion is that heterogeneity can be achieved in group communication services by implementing them using CORBA, but there is a substantial performance cost. This performance cost can be reduced to a certain extent by carefully choosing a design and tuning various protocol parameters such as buffer sizes and timer values.
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CORBA中的群体沟通支持
当前的组通信服务大多是在同构的分布式计算环境中实现的。这限制了它们的适用性,因为大多数现代分布式计算环境本质上是异构的。本文描述了CORBA组通信服务的设计、实现和性能评估。使用CORBA实现组通信服务使该组通信服务能够在异构的分布式计算环境中运行。为了评估CORBA对组通信服务性能的影响,本文对原子广播协议和组成员协议的三种实现的性能进行了详细的比较。其中两个实现使用CORBA,而第三个实现使用UDP套接字进行进程间通信。主要结论是,通过使用CORBA实现组通信服务,可以在组通信服务中实现异构性,但这会带来很大的性能成本。通过仔细选择设计和调优各种协议参数(如缓冲区大小和计时器值),可以在一定程度上降低这种性能成本。
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