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Call traces can provide detailed insight into the operation of distributed embedded systems. Developers inspect traces to understand and debug systems using manual and automatic techniques such as data mining. Correlation of traces between nodes provides a network level view of system. These traces are typically gathered by logging a globally unique identifier for each called function. Unfortunately, this naive call trace gathering technique results in excessive consumption of the limited memory, bandwidth, and energy resources available in wireless sensor networks. This paper proposes three new call trace gathering techniques that are designed specifically for the computing platforms with extreme resource constraints.
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