topic Re: No memory usage seen during stress test (other activity like threads and DB connections is shown in AppD Archive

No memory usage seen during stress test (other activity like threads and DB connections is shown)

CommunityUser — Mon, 30 Dec 2013 03:21:14 GMT

I have installed AppDynamics Lite on a Linux server and pointed it to a JVM using Tomcat 1.6.

When I run the automation stress test, I can see live graphs of things like number of threads and number of DB connections...very nice. But all the memory usage categories (Eden, Young Gen, Old Gen, Perm Gen, Code Cache, etc...) show no activity.

Is this a limitation of the Lite version?

Re: No memory usage seen during stress test (other activity like threads and DB connections is shown

Arun_Dasetty — Mon, 30 Dec 2013 07:02:06 GMT

Hi Mike,

We understood that you are referring AD Lite account and as referred in attached screenshots we would see the memory data fine with acount type as AD LITE, can you please provide the screenshots from UI depicting the issue and the lite agent logs. and also we assume that tomcat version is 6.x, let us know if any disconnect here

Regards,

Arun

Re: No memory usage seen during stress test (other activity like threads and DB connections is shown

CommunityUser — Fri, 03 Jan 2014 20:37:50 GMT

I am connecting AD Lite to a Tomcat 1.6.0.34 JVM.

But I see that the AD Lite version I have is from 2011. I will upgrade this to the newest version and retry.

Re: No memory usage seen during stress test (other activity like threads and DB connections is shown

Arun_Dasetty — Mon, 06 Jan 2014 04:22:08 GMT

Hi Mike,

Thanks for the update, Sure, let us know if you face any issues using latest version of AD lite, we would be glad to assist you further on this.

Regards,

Arun

Re: No memory usage seen during stress test (other activity like threads and DB connections is shown

CommunityUser — Wed, 12 Feb 2014 16:23:19 GMT

Using AD Lite, I have gone to the JMX tab and selected the following node in the domain tree:

java.lang - MemoryPool - PS Eden Space

Eden space is part of the HEAP so I thought I could put this on a graph to see heap usage of the JVM I am monitoring.

But all the Attributes below this node are static settings:

CollectionUsageThreshold = 0

Type = HEAP

Name = PS Eden Space

CollectionUsageThresholdCount = 0

So a graph of any of these attributes does not change over time.

I think I have gone to the wrong place to try and see memeory usage statistics. But I do not see any other obvious place in the AD Lite UI for monitoring memory usage.

Re: No memory usage seen during stress test (other activity like threads and DB connections is shown

Arun_Dasetty — Fri, 14 Feb 2014 11:15:05 GMT

Hi Mike,

We confirm the values showing as zero in Lite viwer UI under mbean browser is "not" lite viewer limitation as we would reproduce the issue in local in liteviwer UI and observed through jconsole those specific mbean attributes shows always as zero as referred in screenshots listed below, you can cross check using jconsole or other jmx monitoring tool:

And you might the the following stats part of JVM -> memory -> Memory pools which we show in our AD Pro version of the product , you can try 30 day trial to see if that feature helps: http://info.appdynamics.com/30-day-trial.html

Let us know if that clarifies your query.

Regards,

Arun