Java Thread Dump Analyzer

Elevate JVM troubleshooting with fastThread, your intelligent thread dump analysis companion. Discover the industry's first machine learning-guided tool for seamless Java thread dump analysis.

  • Detect and resolve JVM thread issues by ML algorithms.
  • Troubleshoot BLOCKED threads, Deadlocks, CPU spikes...
  • Streamline thread dump analysis with automated REST API.
  • Trusted by 10,000+ enterprises

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World's #1 choice for Thread Dump Analysis

Finest addition to your DevOps Toolbox!

Made by the engineers, for the engineers

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Toolbox Icon Instant Root Cause Analysis

Did your application's CPU spiked up or resulted in OutOfMemoryError or became unresponsive? Just upload your thread dumps to fastThread and see the root cause instantly.

Toolbox Icon Online thread dump analyzer

There is no hassle to register, download and install the tool in your machine. Just upload your application's thread dump files & see the analysis reports.

Toolbox Icon Brilliant UI

Stunning dependency graphs, Flame graph, call tree and table view of the thread dumps are presented intuitively in one easy to understand online report.

Thread Dump Analysis REST API

In this modern world, thread dumps are still analyzed in a tedious & manual mode. i.e., Operations engineer captures thread dumps from the production servers; then he transmits those files to developers. Developers use thread dump analysis tools to analyze thread dumps manually.

There is no programmatic way to analyze thread dumps proactively. Given this tediousness, it's impossible to analyze hundreds of JVM's thread dumps in one stroke. Thus to eliminate this hassle, fastThread has built the industry's first (and only) REST API to analyze thread dumps. With one line of code, you can get all your thread dumps analyzed instantly.

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Universal Java thread dump analyzer

Based on the Java version, JVM provider, and tools used to capture, thread dump format varies. Some monitoring tools generate thread dumps in JSON format as well. fastThread is the industry's first online JVM thread dump analyzer that can analyze all formats of thread dumps.

  • Java version: 1.2, 1.3, 1.4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
  • JVM Provider: Oracle, IBM, HP, Azul, OpenJDK
  • Tools: jstack, kill -3, jcmd, JMX MBeans, APM tools

Thus we are proud to be called as a Universal JVM thread dump analysis tool.

How it works?

  • Capture thread dumps

    There are 8 different options to capture thread dumps. Use the one that suits you.

  • Upload thread dumps to fastThread.io

    Upload the captured thread dumps file to fastThread.io

  • Review the report

    Review our world-class analysis report. Our Deep learning algorithms instantly spots root cause of complex problems.

  • You can also use REST API

    To analyze hundreds/thousands of JVMs thread dumps in a proactive manner, use our REST API

Features

fastThread is the DevOps engineers favorite thread dump analysis tool to troubleshoot complex production problems.

Feature Icon Machine Learning

Our machine learning algorithms and expert thread dump analysis patterns are applied to every single thread dump. These patterns not only detect but also forecast CPU spikes, hung threads, and several such problems.

Feature Icon Android thread dump

fastThread parses the thread dumps generated from Android application and generates instant root cause analysis report which contains flame graphs, call trees and transitive dependency graphs and several more intuitive views.

Feature Icon hs_err_pid analysis

A crashes or fatal error causes a JVM to terminate abnormally. When JVM terminate abnormally it creates hs_err_pid file. This file has lot of information, fastThread helps you to analyze this hs_err_pid file effectively.

Feature Icon Core dump analysis

Java core dump has lot of rich information but in a hard to understand/digest format. fastThread.io can analyze Java core dump files and provide you precise information in a graphical format.

Feature Icon Flame Graph

Thread dumps tend to span for several hundreds of lines. fastThread condenses big java thread dump files and generates one easy to understand flame graph. These flame graphs are searchable, zoomable and color coded.

Feature Icon Call Stack Tree

It's hard to scroll through every single line of the stack trace in each thread. Call Stack Tree consolidates all the threads stack trace into one single expandable/collapsable tree. It makes the thread dumps navigation much simpler and easier.

Feature Icon
top -H thread dump

Unix command 'top -H {process-id}' displays Ids of the threads running in the application and amount of CPU & memory they consume. fastThread generates the CPU | Memory section, when you upload 'top -H' output along with thread. This section will show all threads stack trace, their CPU, and memory consumption.

Feature Icon Advanced Search

When there are several hundreds of threads in the thread dump, you might want to search threads based on thread name, Id, thread priority, stack trace, class name, package name, method name. fastThread provides this advanced search capability.

Feature Icon Table View of thread states

A thread can switch between one of these six states: RUNNABLE, WAITING, TIMED_WAITING, BLOCKED, NEW, TERMINATED. When you analyze multiple thread dumps, you might want to track all the thread's states in each dump. fastThread provides Table View, where you can track each thread's state visually.

Features Screenshots

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Instructor: Ram Lakshmanan, Architect of GCeasy

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Hall Of Fame


yCrash Certified Engineers in
Performance & Troubleshooting

Highlighting engineers certified in diagnosing and
optimizing applications.

Kris Murray

Kris Murray

With over 21 years of professional experience, Kris Murray is currently employed full-time at CloudBees as a Development Support Engineer.

Designation
Development Support Engineer
Experience
21+ yrs
Company
Cloudbees
Kris Murray

Subijay Bhattacharya

Have 18+ years of experience in Telecom and Insurance domain and worked on Java/J2EE, Hybrid Android

Designation
Product Architect
Experience
20+ yrs
Company
Motive
Kris Murray

Brijmohan Singh

Specialties: Agile, SCRUM , Product manager, Portfolio manager, Technical Account Manager (TAM), Collection & Recoveries

Designation
Senior Manager
Experience
16+ yrs
Company
CRsoftware

Testimonials

What does major enterprises say about fastthread.io?

J.vasiltsov CFT

Anhui NCS,
Singapore

Chan.upen

Abhishekdesilva

Carlos PERFORMANCE ENGINEER

Testimonial Image
J.vasiltsov
CFT

Thank you very much!
Your report was very usefull and helpful. It contains many illustrations and graphs. This report had attracted my attention to a problem I missed during manual parsing the thread dump.
Thanks again!

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Anhui
NCS,
Singapore

Very good tools to analyse java dump. thank you. it will be much helpful if it is product that can be download-able though it is chargeable, i would like to recommend my customer to buy it.

Testimonial Image
Chan.upen

Its realy magical as you plot everything from the thread dump file. It saves alot my time and makes my work easier by quickly analyze the dump and providing very very useful report. Thanks a lot for this.

Testimonial Image
Abhishekdesilva

I am a developer and this certainly did help me to further investigate the client's issue. I thank you for your service.

Testimonial Image
Carlos
PERFORMANCE ENGINEER

I did not expect such quick report, and so comprehensive, it allows someone to find out RCA and reply immediately, keep it up!

FAQ

Frequently Asked Questions. If you have further questions mail us: support@tier1app.com

How to take thread dumps?

There are multiple options to take thread dumps. Here is our article which provides you 9 different options to capture thread dumps.

Can tool parse thread dumps only?

Besides parsing thread dumps, fastThread can also parse core dumps and hs_err_pid files as well.

Can you clarify licensing on reusing the reports and graphics?

You are welcome to use the graphics and other metrics provided by the fastThread tool in your blog post or company report by specifying accreditation "Generated by fastthread.io" at the bottom of the graphics.

fastThread isn't able to parse my thread dumps?

We parse multiple thread dump formats. But still we keep uncovering new formats of thread dumps. If you can email your thread dump to support@tier1app.com , we will enhance the tool to parse it, right away.

Can I look at sample thread dump analysis reports?

Ofcourse. Here are sample thread dump analysis reports generated by fastThread:

Can I install this tool locally?

Yes, you can install this tool locally, so that you don't have to upload the dumps to our servers. Please see the pricing for this plan.

You can register here to get a free 14-day trial of our products: GCeasy.io, fastThread.io, HeapHero.io.

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