For jstat, you have to be a user with permission to the process.  In this case, either the user the java process is running as, or root.  I use jstat when I want to script things to watch them on the console.

For JMX, there are jvm arguments you can use to open it up to external hosts, provide authentication, etc.  That will depend on the server you're running and you should consult the documentation for that server.

On Wed, Oct 9, 2013 at 3:19 PM, Vimal Shah <vimals@sokikom.com> wrote:

James,

What other details can I provide?

It does sound like JMX is the standard. When running jstat with my JAVA PID 

$ jstat -gc 19326

Could not attach to 19326

I don't have JMX configured. After some reading it seems that I need to get a Mbeans server running. Is this what I have to do?

http://docs.oracle.com/javase/tutorial/jmx/mbeans/standard.html

On Wed, Oct 9, 2013 at 1:15 PM, James Mcphee <jmcphe@gmail.com> wrote:

We'd need more details to give you much more than "Using JMX or jstat would be easiest"

Example:

./jstat -gc 27104

 S0C    S1C    S0U    S1U      EC       EU        OC         OU       PC     PU    YGC     YGCT    FGC    FGCT     GCT   

20928.0 21312.0  0.0   4864.0 305728.0 128383.7  262656.0   223537.3  170240.0 130738.6    295    6.912  10      8.268   15.180

http://docs.oracle.com/javase/1.5.0/docs/tooldocs/share/jstat.html

On Wed, Oct 9, 2013 at 1:05 PM, Vimal Shah <vimals@sokikom.com> wrote:

Hello,

Does anyone have a step by step guide to getting monitoring (heap stack) set up of a Java app on an Amazon VPC box? The application is smartfoxserver and it's on Ubuntu 12.04.

I've scratched the surface on the following:

• https://code.google.com/p/javamelody/
  
• http://docs.oracle.com/javase/6/docs/technotes/guides/management/jconsole.html
  
• http://jamonapi.sourceforge.net/
  

Application code changes aren't within my reach at the moment. An apt-get install of a monitoring tool on the server under question would be ideal. If this tool can have low overhead even better.

Thank you all in advance.

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Vimal (rhymes with Kimmel) Shah

Front-End / Infrastructure Engineer

Sokikom
Mobile: (480) 752-9269
Email:   vimals@sokikom.com

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Vimal (rhymes with Kimmel) Shah

Front-End / Infrastructure Engineer

Sokikom
Mobile: (480) 752-9269
Email:   vimals@sokikom.com

Web:    www.sokikom.com

Follow us: twitter.com/sokikom

Like us: facebook.com/sokikom

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