Measuring and optimizing CORBA latency and scalability over high-speed networks
1998; Institute of Electrical and Electronics Engineers; Volume: 47; Issue: 4 Linguagem: Inglês
10.1109/12.675710
ISSN2326-3814
AutoresAniruddha Gokhale, Douglas C. Schmidt,
Tópico(s)Embedded Systems Design Techniques
ResumoThere is increasing demand to extend object-oriented middleware, such as OMG CORBA, to support applications with stringent quality of service (QoS) requirements. However, conventional CORBA Object Request Broker (ORE) implementations incur high latency and low scalability when used for performance-sensitive applications. These inefficiencies discourage developers from using CORBA for mission/life-critical applications such as real-time avionics, telecom call processing, and medical imaging. This paper provides two contributions to the research on CORBA performance. First, we systematically analyze the latency and scalability of two widely used CORBA ORBs, VisiBroker and Orbix. These results reveal key sources of overhead in conventional ORBs. Second, we describe techniques used to improve latency and scalability in TAO, which is a high-performance, real-time implementation of CORBA. Although conventional ORBs do not yet provide adequate QoS guarantees to applications, our research results indicate it is possible to implement ORBs that can support high-performance, real-time applications.
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