TCP - IP White Papers

A Measurement Study of the Linux TCP/IP Stack Performance and Scalability on SMP Systems

Overview The performance of the protocol stack implementation of an operating system can greatly impact the performance of networked applications that run on it. This paper presents a thorough measurement study and comparison of the network stack performance of the two popular Linux kernels: 2.4 and 2.6, with a special focus on their performance on SMP architectures. The findings reveal that interrupt processing costs, device driver overheads, check summing and buffer copying are dominant overheads of protocol processing. It was found that although raw CPU costs are not very different between the two kernels, Linux 2.6 shows vastly improved scalability, attributed to better scheduling and kernel locking mechanisms.

Further White Paper Details
PublisherIndian Institute of Technology Bombay File FormatPDF
Date PublishedJanuary 2007 Downloads10
FormatWhite Papers   
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