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Trace and Log Analysis: A Pattern Reference for Diagnostics and Anomaly Detection by Software Diagnostics Institute, Dmitry Vostokov

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Last Activity

Sometimes we need to analyze the last activity before Significant Event or Discontinuity. By this pattern, we mean a loose semantic collection of messages before process exit, for example. It may give some clues to further troubleshooting. In one incident, a process was suddenly exiting. Its detailed trace did not have any messages explaining that probably due to insufficient tracing coverage (Sparse Trace). Fortunately, a different external trace (from Process Monitor) was collected (Inter-Correlation), and it had LDAP network communication messages just before the thread and process exit events.

 

Layered Periodization

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