Here are ways to get the thread dump for
your JBoss server for performance analysis.
In this article we will see three different
ways to take thread dump from JBoss Server.
By using jboss jmx-console
http://localhost:8080/jmx-console
and search "serverInfo" and click
on that link
Click invoke under listThreaddump()
Which will give you current snapshot of threads which are running in JVM.
By using twiddle
Which will give you current snapshot of threads which are running in JVM.
By using twiddle
go to <JBOSS-HOME>/bin
In windows -
twiddle.bat
invoke "jboss.system:type=ServerInfo" listThreadDump > dump.html
dump.html will have your thread dump.
In unix-based machines
In unix-based machines
/jboss/bin/twiddle.sh
invoke "jboss.system:type=ServerInfo" listThreadDump > dump.html
2>&1
Using "Interrupt" signal – SIGQUIT
Use kill -3 <process-id> to generate thread dump. You will find the thread dumps in server logs.
Typically to know exact cause you need to take at least 5 to 7 thread dumps with 30 seconds gap, so that you will know what is the common thread which is waiting for long time.
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