cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Unable to find the Automatic Leak Detection dashboard after enabling the On Demand Capture Session

We have enabled On Demand Capture Session for capturing the memory leaks on of our node. After the session ends, we are unable to see the detection dashboard 

SarathKumarSarepaka_0-1723440668346.png

 

 

3 REPLIES 3

Ryan.Paredez
Community Manager

Hi @Sarath Kumar.Sarepaka,

If you have not yet seen this AppDynamics Documentation, please check it out and see if it helps.


Thanks,

Ryan, Cisco AppDynamics Community Manager




Found something helpful? Click the Accept as Solution button to help others find answers faster.

Liked something? Click the Thumbs Up button.



Check out Observabiity in Action

new deep dive videos weekly in the Knowledge Base.

Terence.Chen
AppDynamics Team

From the screen shot, you have started the ALD session and the Summary showed you have successfully started  & stop CollectionCapture... unfortunately, no Java Collections were eligible for evaluation. If you look at the middle section of the screen, it gives the explanation/details.

To qualify for evaluation, a Collection must have a certain size and elements.  2 App Server Agent settings/parameters are mentioned:

  • minimum-size-for-evaluation-in-mb - The default value is 5MB(I think). Depending on your application, you may want to increase of decrease this value.
  • minimum-number-of-elements-in-collection-to-deep-size - The default is 1000 elements, maybe  large for an application(?). If your application is small and we’re not sure if any collection has about 1000 elements, we can try lowering this value.

Next, is Start On Demand Capture Session:

  • If Session Duration is too small, we may not have sufficient time window to capture those Collections (objects/classes). If the default 10 mins shows nothing, then try 15.
  • If Collection Age is too small, this means the Collection is too “young” and hence the size may not be enough as candidate for evaluation. Go with default 2 mins.

If all the criteria are good, you should see something below:

TerenceChen_0-1723509896387.png

TerenceChen_1-1723509989099.png

thanks.

 

Ryan.Paredez
Community Manager

Hi @Sarath Kumar.Sarepaka,

Were you able to check out the latest reply your post got? If it helped answer your question, click the "Accept as Solution" button on the reply that helped. 

If it does not answer your question, reply to this post to keep the conversation going. 


Thanks,

Ryan, Cisco AppDynamics Community Manager




Found something helpful? Click the Accept as Solution button to help others find answers faster.

Liked something? Click the Thumbs Up button.



Check out Observabiity in Action

new deep dive videos weekly in the Knowledge Base.