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From Pid <...@pidster.com>
Subject Re: Tomcat 6.0.29 using more and more RAM until it collapses?
Date Fri, 12 Nov 2010 08:49:02 GMT
On 12/11/2010 05:54, Brian wrote:
> Hi Pid,
> 
> I did it, but shows no results.
> Anyway, it was nice to learn about Jconsole.
> 
> Now I wonder what is the tool I could use to inspect the objets inside my
> app, and see which ones are using all the memory. 

Try VisualVM, another JDK6 tool, but a more recent version is available:

 http://visualvm.dev.java.net/

There are extra plugins available from the Tools menu.

You can use profiling on local JVM processes to see which classes are
using memory, CPU time.  Or take a series of heap dump and import,
examine them.


p


>> -----Original Message-----
>> From: Pid [mailto:pid@pidster.com]
>> Sent: Thursday, November 11, 2010 03:06 PM
>> To: Tomcat Users List
>> Subject: Re: Tomcat 6.0.29 using more and more RAM until it collapses?
>>
>> On 11/11/2010 18:54, Brian wrote:
>>> I don't think my app is taking all this RAM, because when I restart
>>> it, the RAM usage doesn't go down. It does only if I restart Tomcat
>>> itself, instead of my app running there.
>>
>> Yes, this is a classic sign of a problem with the app.
>>
>> Reboot Tomcat, restart your app a couple of times (this bit is important).
>>
>> Connect to the Tomcat instance using JConsole, navigate the MBeans, to
> Catalina
>>> Hosts > (your hostname), then select the Operations tab, under which
> you'll
>> see a button called "findReloadContextMemoryLeaks".
>>
>> Push the button.
>>
>> It will return a list of app names if Tomcat can detect ones with memory
> leaks.
>>
>> NB  No results doesn't necessarily mean your app isn't leaking.
>>
>>
>> p
> 
> 
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