Quickly view the threads of your blocked Ruby application with JStack

'jstack - Stack Tracer of JVM Threads' tutorial was cited in a software company blog in 2012.

The 'jstack' - Stack Tracer of JVM Threads tutorial was cited in a software company blog in 2012.

Subject: Quickly view the threads of your blocked Ruby application with
   JStack
Date: November 9, 2012
Author: Nic Williams
Source: https://blog.engineyard.com/2012/thread-viewing-jstack/

When something is amiss with a production application, it can be very
productive to quickly look at the list of threads in an application
and what state they are in. For your Ruby application running on
JRuby, we can use JStack.

This article shows a quick example of a stuck Ruby application running
on JRuby and how to find out what is stuck and how to look at the
elongated (read: ugly) stack trace and figure out how it maps to our
Ruby source code.

Java and JStack

First let’s look at using JStack for a basic Java app, then look at
the same app written in Ruby and running on JRuby.

Example taken from https://www.herongyang.com/Java-Tools
/jstack-JVM-Thread-Dump-Stack-Strace.html.
Source available at https://github.com/drnic/long_sleep_demo/blob
/master/LongSleep.java

...

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Quickly view the threads of your blocked Ruby application with JStack

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