Thread Dump Viewer

🚀 Offline Thread Dump Analyzer.

Disclaimer: While I am making this for my own use, I will try to fix reported issues, as much time allows me to 🤷‍♂️.

☕️ You can still buy me a coffee :)

Usage

Download the fat jar and run it:

java -jar tdv-X.Y.Z-all.jar <thread-dump-file>[.gz]

The input may be a 1) raw thread dump or 2) a gzipped thread dump.

The report will be generated in the out subfolder as HTML file. It is a huge report, and it is not beautiful, but it is functional.

TDV Report

The report contains the following sections:

• Thread Stats - general stats about threads (all, application, system)
• Tomcat - Tomcat stats (if detected)
• Daemon Stats - stats about daemon threads
• GC Stats - stats about garbage collection
• Pools - detected thread pools
• Blocks - thread blocking analysis
• Flamegraph - interactive flamegraph of stack traces
• Call Tree - call tree
• Exceptions - all captured exceptions
• CPU consuming threads - threads sorted by CPU consumption
• Threads with identical stack trace
• List of missing locks - locks that are not released

TDV SQL Console

Yes, you can query the thread dump using SQL.

• SQL Console

TODO

• [X] Stats per thread pool
• [ ] Deadlocks detection (as soon as I get a thread dump with a deadlock)
• [ ] Detect complex deadlocks (e.g. A -> B -> C -> A)
• [ ] Thread histogram per priorities
• [ ] Latest executed methods?]