ACM Transactions on Computer Systems (TOCS)
An integrated experimental environment for distributed systems and networks
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
Scalability and accuracy in a large-scale network emulator
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
In VINI veritas: realistic and controlled network experimentation
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Designing extensible IP router software
NSDI'05 Proceedings of the 2nd conference on Symposium on Networked Systems Design & Implementation - Volume 2
To infinity and beyond: time-warped network emulation
NSDI'06 Proceedings of the 3rd conference on Networked Systems Design & Implementation - Volume 3
Virtualizing the data plane through source code merging
Proceedings of the ACM workshop on Programmable routers for extensible services of tomorrow
Large-scale virtualization in the Emulab network testbed
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Towards high performance virtual routers on commodity hardware
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
RouteBricks: exploiting parallelism to scale software routers
Proceedings of the ACM SIGOPS 22nd symposium on Operating systems principles
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The Internet is suffering from ossification. There has been substantial research on improving current protocols, but the vendors are reluctant to deploy new ones. We believe that this is in part due to the difficulty of evaluating protocols under realistic conditions. Recent wide-area testbeds can help alleviate this problem, but they require substantial resources (equipment, bandwidth) from each participant, and they have difficulty in providing repeatability and full control over the experiments. Existing in-house networking testbeds are capable of running controlled, repeatable experiments, but are typically small-scale (due to various overheads), limited in features, or expensive. The premise of our work is that it is possible to leverage the recent increases in computational power to improve the researchers' ability to experiment with new protocols in lab settings. We propose a cost-effective testbed, called MX, which emulates many programmable routers running over a realistic topology on multi-core commodity servers. We leverage open source implementations of programmable routers, such as Click, and modify them to allow coexistence of multiple instances in the same kernel in an effort to reduce packet forwarding overheads. Our initial results show that we outperform similar cost-effective solutions by a factor of 2. Next, we demonstrate that grouping and placing routers on to cores which share the L2 cache yields high performance.