Communications of the ACM
Evaluating the impact of simultaneous multithreading on network servers using real hardware
SIGMETRICS '05 Proceedings of the 2005 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
High-performance IPv6 forwarding algorithm for multi-core and multithreaded network processor
Proceedings of the eleventh ACM SIGPLAN symposium on Principles and practice of parallel programming
Detecting Conflicts of Interest
RE '06 Proceedings of the 14th IEEE International Requirements Engineering Conference
High-performance packet classification algorithm for many-core and multithreaded network processor
CASES '06 Proceedings of the 2006 international conference on Compilers, architecture and synthesis for embedded systems
Efficient memory utilization on network processors for deep packet inspection
Proceedings of the 2006 ACM/IEEE symposium on Architecture for networking and communications systems
Queue - SIP
An evaluation of network stack parallelization strategies in modern operating systems
ATEC '06 Proceedings of the annual conference on USENIX '06 Annual Technical Conference
Towards Optimized Packet Classification Algorithms for Multi-Core Network Processors
ICPP '07 Proceedings of the 2007 International Conference on Parallel Processing
Towards high-performance flow-level packet processing on multi-core network processors
Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems
Frame shared memory: line-rate networking on commodity hardware
Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems
Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems
Performance scalability of a multi-core web server
Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems
Automated task distribution in multicore network processors using statistical analysis
Proceedings of the 3rd ACM/IEEE Symposium on Architecture for networking and communications systems
IBM Journal of Research and Development
Scalability Evaluation and Optimization of Multi-Core SIP Proxy Server
ICPP '08 Proceedings of the 2008 37th International Conference on Parallel Processing
Explaining the Impact of Network Transport Protocols on SIP Proxy Performance
ISPASS '08 Proceedings of the ISPASS 2008 - IEEE International Symposium on Performance Analysis of Systems and software
SIP security issues: the SIP authentication procedure and its processing load
IEEE Network: The Magazine of Global Internetworking
The impact of TLS on SIP server performance
Principles, Systems and Applications of IP Telecommunications
On TCP-based SIP server overload control
Principles, Systems and Applications of IP Telecommunications
The impact of TLS on SIP server performance: measurement and modeling
IEEE/ACM Transactions on Networking (TON)
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This paper evaluates the performance of a popular open-source Session Initiation Protocol (SIP) server on three different multicore architectures. We examine the baseline performance and introduce three analysis-driven optimizations that involve increasing the number of slots in hash tables, an in-memory database for user authentication information, and incremental garbage collection for user location information. Wider hash tables reduce the search time and improve multicore scalability by reducing lock contention. The in-memory database reduces interprocess communication and locking. Incremental garbage collection smooths out peaks of both central processing unit and shared memory utilization, eliminating bursts of failed SIP interactions and reducing lock contention on the shared memory segment. Each optimization affects single-core performance and multicore scalability in different ways. The overall result is an improvement in absolute performance on eight cores by a factor of 16 and a doubling of multicore scalability. Results somewhat vary across architectures but follow similar trends, indicating the generality of these optimizations.