How to generate thread dumps of the Spectrum OneClick tomcat process

Products

• CA Spectrum

Issue/Introduction

This document outlines the steps needed to generate thread dumps of the Spectrum OneClick Tomcat process if the process is hung or consuming over 100% cpu consistently.

Environment

Spectrum 20.2.x

Component: SPCOCK: Spectrum OneClick

Cause

Debugging Purposes

Resolution

Linux:

As root user, obtain the pid of the OneClick process:  ./ps -ef | grep -i java

Use the kill command to generate the thread dump - this does not actually kill the process:

./kill -3 pid_of_tomcat

For example:

./kill -3 4522

This will dump the threads to the $SPECROOT/tomcat/logs/catalina.out.

Run the command 3x and then provide the catalina.out to Broadcom support.

 

 

Windows:

Obtain the pid of the Spectrum Tomcat process in Windows Task Manager (OneClickService.exe)

Go to Start-Run and type:  bash -login

You will be in the $SPECROOT directory.  

cd to $SPECROOT/lib/SDPM

Use the kill command to generate the thread dump - this does not actually kill the process:

./kill -BREAK pid_of_tomcat

For example:

./kill -BREAK 4522

This will dump the threads to the $SPECROOT/tomcat/logs/jvm.log

Run the command 5x and then provide the jvm.log to Broadcom support.