Publication No 36593


Wanke, S.; Scharf, M.*; Kiesel, S.*; Wahl, S.


Measurement of the SIP Parsing Performance in the SIP Express Router


Measurement and Trials; Performance Evaluation




Future telephony and multimedia systems will use the Session Initiation Protocol (SIP) for signaling purposes. SIP is a text-based protocol that imposes challenges for an efficient message processing. The ability of SIP entities to process SIP messages quickly is crucial for the performance of these networks, which often have strict timing requirements, e. g., to keep the call setup delays small. This paper studies the performance of SIP message processing in SIP proxies, focusing mainly on the impact of message parsing. We perform a detailed delay analysis for the widely used SIP Express Router (SER). Our measurements show that message parsing actually contributes significantly to a SIP proxy's processing efforts, and therefore confirm other existing studies. However, our results also show that the overall delay in high-performance SIP proxies is stronger affected by other factors, in particular the operating system.



Reference entry

Wanke, S.; Scharf, M.; Kiesel, S.; Wahl, S.
Measurement of the SIP Parsing Performance in the SIP Express Router
Proceedings of the 13th Open European Summer School and IFIP TC6.6 Workshop (EUNICE 2007), Enschede, July 2007, pp. 103-110

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Authors marked with an asterisk (*) were IKR staff members at the time the publication has been written.