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Thursday Nov 18th, 2004 - 4:30pm
Computer Laboratory > Research > Systems Research Group > NetOS > Seminars > Thursday Nov 18th, 2004 - 4:30pm

Using Magpie for request extraction and workload modelling

Rebecca Isaacs
Tools to understand complex system behaviour are essential for many performance analysis and debugging tasks. We have developed one such tool, called Magpie, which automatically extracts a system's workload under realistic operating conditions by tracking the control flow and resource consumption of each and every request. From canonical descriptions of these requests in which scheduling artefacts have been removed, we can construct concise workload models suitable for performance prediction and change detection. In this talk I will describe Magpie's event correlation technique and present some evaluation of its ability to accurately extract requests and to construct representative models of system behaviour.