Eric Gross and Sabha Parameswaran, from Oracle FMW Architects Team (The A-team) are happy to introduce ThreadLogic, an open source Thread Dump Analyzer, to Oracle Fusion Middleware community and customers.
Motivation behind ThreadLogic
The current set of TDA tools (Samurai/TDA) do not mine the thread dumps. Neither do they provide a more detailed view of what each thread is doing. Most of the existing tools tend to limit themselves to reporting the state (locked/waiting/running) or the lock information. They don't go into details of the type of activity within a thread, should it be treated as normal or deserving a closer look? Can a pattern or anti-pattern be applied against them? Any possible optimizations? Are there any hot spots? Any classification of threads based on their execution cycles?
We decided to create ThreadLogic to address these deficiencies. It is based on a fork of the TDA open source tool with new capabilities to analyze and provide advice based on a set of extensible advisories and thread grouping while supporting all JVM thread dumps. Also, a thorough and in-depth analysis of WebLogic Server thread dumps is provided. Both the thread grouping and advisories are extensible where user can add new patterns to match and tag or group threads. Please check the attached document for more details of the tool.
The latest stable bits (version 0.9) and documentation can be downloaded from here. For more details on the tool's capabilities, please check the documentation page.
Our hope is that this tool would go a long way in improving and helping both internal teams (Support/Dev/Field) and external customers in terms of better analysis and faster issue resolutions.