Enhanced Debugging with Traces

Casper: Debugging Null Dereferences with Dynamic Causality Traces

Fixing a software error requires understanding its root cause. In this paper, we introduce “causality traces”, crafted execution traces augmented with the information needed to reconstruct the causal chain from the root cause of a bug to an execution error. We propose an approach and a tool, called CASPER, based on code transformation, which dynamically constructs causality traces for null dere...

Debugging Distributed Programs by Visualizing and Querying Event Traces 1

Debugging Distributed Programs by Visualizing and Querying Event Traces

Knowledge Bases in Debugging Parallel and Distributed Systems Based on Event Traces

Systematical event trace analysis requires both detailed knowledge about the event trace analysis environment used and detailed knowledge about the object system itself. This article presents three important knowledge bases which, when contained in event trace analysis environments, facilitate achieving useful performance results of the system under investigation. ParaGraph — a dedicated event ...

Comparison , Replay , and Refinement of Communication Traces for Debugging Distributed Failures

An increasing number of companies build their business on distributed Web applications. Hosting providers respond to that demand and made it easier to deploy systems that spread across multiple services. However, this trend has outpaced the development of adequate debugging tools and developers still have to rely on an improvised patchwork of symbolic debuggers and printf debugging to find fail...