Abstract

Detailed diagnostic data is a prerequisite for debugging problems and understanding runtime performance in distributed wireless embedded systems. Severe bandwidth limitations, tight timing constraints, and limited program text space hinder the application of standard diagnostic tools within this domain. This work introduces the Log Instrumentation Specification (LIS), which provides a high level logging interface to developers and is able to create extremely compact diagnostic logs. LIS uses a token scoping technique to aggressively compact identifiers that are packed into bit aligned log buffers. LIS is evaluated in the context of recording call traces within a network of wireless sensor nodes. Our evaluation shows that logs generated using LIS require less than 50% of the bandwidth utilized by alternate logging mechanisms. Through microbench-marking of a complete LIS implementation for the TinyOS operating …

Date

2010

Authors

Roy Shea, Mani Srivastava, Young Cho

Conference

2010 Design, Automation & Test in Europe Conference & Exhibition (DATE 2010)

Pages

1450-1455

Publisher

IEEE