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Evaluating System Performance in Gigabit Networks

Salah, Khaled and El-Badawi, K (2003) Evaluating System Performance in Gigabit Networks. Proceedings of the 28th IEEE Local Computer Networks (LCN), Bonn/Königswinter, Germany. pp. 498-505.

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With the current wide deployment of Gigabit Ethernet technology in the backbone and workgroup switches, the network performance bottleneck has shifted for the first time in nearly a decade from the network to the end hosts and servers. This dramatic bandwidth increase calls for optimizations and good design considerations in many key components of the hosts and servers. These key components include network adaptor, operating system, protocol stack, memory, and processing power. More importantly the high bandwidth increase can negatively impact the OS performance due to the interrupt overhead caused by the incoming gigabit traffic. This paper presents models and analytical techniques for studying such a negative impact. We first present an analytical model for the ideal system when interrupt overhead is ignored. We then present two models which describe the impact of high interrupt rate on system throughput. One model is for network adaptors not equipped with DMA engines, and the other model is for network adaptors equipped with DMA engines. In addition we study the system performance when using different system delivery options of packet data to user applications. Results from both simulations and reported experimental findings show that our analytical models are valid and give a good approximation.

Item Type:Article
Uncontrolled Keywords:Gigabit Ethernet, Interrupts, Receive Livelock, High-Speed Networks, Modeling, Analysis, Performance, Operating Systems.
Divisions:College Of Computer Sciences and Engineering > Information and Computer Science Dept
Creators:Salah, Khaled and El-Badawi, K
Email:salah@kfupm.edu.sa, badawi@kfupm.edu.sa
ID Code:787
Deposited On:27 Mar 2008 12:26
Last Modified:12 Apr 2011 13:06

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