Jstack

External

• http://download.oracle.com/javase/6/docs/technotes/tools/share/jstack.html
• Insufficient memory or insufficient privileges to attach http://stackoverflow.com/questions/20149635/java-jstack-tool-insufficient-memory-or-insufficient-privilege-to-attach]

Internal

• Java Performance

Overview

JVM thread dumps can be generated with jstack, a tool that ships with the JDK. To take a full JVM thread dump, identify the PID of the target JVM and execute:

jstack -l <pid> > <dump-file-name.txt>

Note that without redirect, jstack sends the output to stdout.

Insufficient memory or insufficient privileges to attach

When getting this, I made it work by using -F command line option:

jstack -F <pid>

Options

-F

Frce a thread dump. Use when jstack <pid> does not respond (process is hung).

-m

Print both java and native frames (mixed mode).

-l

Long listing. Prints additional information about locks.