Java Thread Dump Analyzer

A web tool that analyzes Java thread dumps to identify deadlocks, bottlenecks, and thread contention for developers and SREs.

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About This Tool

The tool ingests raw Java thread dumps and returns a structured analysis that highlights thread states, stack traces, and interactions. It standardizes identifiers, removes transient noise, and prepares data for deterministic interpretation.
Conceptually, it builds a thread interaction graph, applies deadlock-detection logic, and ranks threads by wait time. It can handle multiple dumps to observe cross-dump patterns.
Who benefits: SREs and developers debugging backend services, platform teams profiling latency sources, and incident responders needing rapid root cause. Unique value: automated deadlock detection, clear bottleneck signals, and easy export for automation. Core features include parsing, normalization, deadlock analysis, contention hotspots, per-stack aggregation, and export options (JSON/CSV). Typical use cases include post-mortem investigations, proactive health checks, and performance tuning of Java services.

How to Use

  1. Provide inputs: paste the thread dump text into the input field and set optional settings as needed.
  2. Choose method: select output format and whether to include system properties or filter by package.
  3. Run analysis: submit to process the dump and wait for results.
  4. Review outputs: read the summary, check deadlock details, and inspect hotspot lists.
  5. Export data: download JSON/CSV or copy the report for automation.
How to use spotify online java thread dump analyzer

Frequently Asked Questions

Find Quick Answers

What formats are supported for input and output?
Input accepts standard Java thread dumps from HotSpot/OpenJDK. Output can be JSON, CSV, or a plain text report suitable for logging and automation.
Can it detect deadlocks across multiple dumps?
Yes. When multi-dump mode is used, the analyzer correlates threads across dumps to reveal repeating contention patterns and cross-dump deadlocks.
What is produced for integration or reporting?
A structured summary, detailed deadlock info, and hotspot lists are available as JSON for automation, plus a CSV/report export for human review.
How accurate is deadlock detection?
Deadlock detection uses a waits-for graph within each dump. Complex asynchronous patterns may require corroborating data; results include confidence indicators and notes where applicable.

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