Request behavior variations

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Request behavior variations
A large number of user requests execute (often concurrently) within a server system. A single request may exhibit fluctuating hardware characteristics (such as instruction completion rate and on-chip resource usage) over the course of its execution, due to inherent variations in application execution semantics as well as dynamic resource competition on resource-sharing processors like multicores. Understanding such behavior variations can assist fine-grained request modeling and adaptive resource management. This paper presents operating system management to track request behavior variations online. In addition to metric sample collection during periodic interrupts, we exploit the frequent system calls in server applications to perform low-cost in-kernel sampling. We utilize identified behavior variations to support or enhance request modeling in request classification, anomaly analysis, and online request signature construction. A foundation of our request modeling is the ability...
Kai Shen
Added 17 May 2010
Updated 17 May 2010
Type Conference
Year 2010
Authors Kai Shen
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