| Publisher | Indian Institute of Technology Bombay | ||
|---|---|---|---|
| Format | 117.0KB PDF | Date added | 01 Jan 2007 |
| Topics | TCP - IP, Scalability, Linux Server OS | ||
| Downloads | 116 | ||
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.
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