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by Thiemo Voigt, Per Gunningberg
http://www.sics.se/~thiemo/snart.ps
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Abstract:
Several overload admission control architectures have been developed to protect web servers from overload. Some of these architectures base their admission decision on information found in the HTTP header. In this context, persistent connections represent a challenging problem since the HTTP header of the rst request does not reveal any information about the resource consumption of the requests that might follow on the same connection. We have previously presented a kernel-based architecture that protects web servers from overload. The implemented mechanisms have proven to be more ecient and scalable than application level controls implemented in the web server. In this paper, we extend the kernel-based architecture to prevent overload caused by persistent connections. We evaluate our approach by various experiments.
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