Skip to content
Super-simple thread-dump utility for watching JVM performance as you develop.
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
src/main/java/org/workdocx/threaddump
.gitignore
LICENSE
NOTICE
README.md
pom.xml

README.md

thread-dumper

Super-simple thread-dump utility for watching JVM performance as you develop.

This is great if you're developing a Java webapp and want to see what's taking time. Thread-dumper takes a thread dump every second and splits it by blank lines to identify individual thread stacks. This isn't revolutionary, but is remarkably useful. When something in your webapp takes a while to respond, a few clicks gives you a remarkably clear view of what's slowing you down. Simple, effective.

Requirements:

You'll need "jstack" available on your path. This is a JVM tool.

Build:

mvn assembly:assembly

Run:

java -jar thread-dumper-1.0.0-jar-with-dependencies.jar <pid> [search terms]

Search terms:

If you provide no search terms, thread-dumper will print out a full thread dump every second. Thread-dumper will show any "blocks of text" - typically thread stacks - that contain the search terms you specify. If you need to suppress something, use -<search term>.

Examples:

java -jar thread-dumper-1.0.0-jar-with-dependencies.jar 6884 +com.mypackage -com.mypackage.BackgroundProcessor

is equivalent to:

java -jar thread-dumper-1.0.0-jar-with-dependencies.jar 6884 com.mypackage -com.mypackage.BackgroundProcessor

I hope it's as useful for you as it is for me.

David Carboni http://workdocx.com/

You can’t perform that action at this time.