Locality-aware request distribution in cluster-based network servers
Proceedings of the eighth international conference on Architectural support for programming languages and operating systems
Optimizing TCP forwarder performance
IEEE/ACM Transactions on Networking (TON)
TCP splice application layer proxy performance
Journal of High Speed Networks
Building a robust software-based router using network processors
SOSP '01 Proceedings of the eighteenth ACM symposium on Operating systems principles
Ixp2400-2800 Programming: The Complete Microengine Coding Guide
Ixp2400-2800 Programming: The Complete Microengine Coding Guide
Design and Implementation of a Content-Aware Switch Using a Network Processor
HOTI '05 Proceedings of the 13th Symposium on High Performance Interconnects
On the performance of TCP splicing for URL-aware redirection
USITS'99 Proceedings of the 2nd conference on USENIX Symposium on Internet Technologies and Systems - Volume 2
Efficient support for content-based routing in web server clusters
USITS'99 Proceedings of the 2nd conference on USENIX Symposium on Internet Technologies and Systems - Volume 2
Design of a web switch in a reconfigurable platform
Proceedings of the 2006 ACM/IEEE symposium on Architecture for networking and communications systems
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
RouteBricks: exploiting parallelism to scale software routers
Proceedings of the ACM SIGOPS 22nd symposium on Operating systems principles
A programmable network address translator: Design, implementation, and performance
ACM Transactions on Internet Technology (TOIT)
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TCP Splicing can be used in content-aware switches to tremendously reduce overall request latency. In order to reduce the processing latency further, we propose to offload the protocol processing onto network processors (NPs). An NP consists of a multithreaded multiprocessor architecture that can provide high throughput for packet processing or forwarding. However, offloading any protocol software to an NP needs to be carefully designed due to its low-level programming and limited control memory size.In this paper, we first analyze the operation of TCP Splicing in detail and evaluate its performance through measurements on a Linux-based switch. Then various possibilities of workload allocation among different computation resources in an NP are presented, and the design tradeoffs are discussed. A content aware switch is implemented using IXP 2400 NP and evaluated for performance comparison. The measurement results demonstrate that our NP-based switch can reduce the http processing latency by an average of 83.3% for a 1K byte web page. The amount of reduction increases with larger file sizes. It is also shown that the packet throughput can be improved by up to 5.7x across a range of files by taking advantage of multithreading and multiprocessing, available in the NP.