Minimum Heap Size Allocation for Ecommerce application

[Anoop_Garg]

Hello Team, We are facing heap memory issue for our application . Would like to check what should Minimum Heap Size Allocation for Ecommerce application in ideal scenario ?  we know it depends upon user, traffic etc. 

Looking for recommendations ...

[Jagadeesh_Prakash]

@Anoop_Garg Hope this is useful

AEM instances were running with a minimum heap size of 256M, a maximum heap size of 1024M.

https://experienceleague.adobe.com/docs/experience-manager-64/managing/managing-further-reference/ha...

Below link and answer from @Kiran_Vedantam  will be helpful 

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem-author-heap-size-error...

[Saravanan_Dharmaraj · Accepted solution]

I feel it depends on your AEM set up too. Below documentation from the Adobe gives an idea on the performance based on the set up you might have

https://experienceleague.adobe.com/docs/experience-manager-64/deploying/configuring/performance-guid...

Also in the same post https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem-author-heap-size-error... given by @Jagadeesh_Prakash 

please check the reply from @Jorg_Hoh reply on memory issue

To understand the root cause for slowness, I would use the following approach:

* enable Garbage Collection logging on the JVM and monitor the GC behavior.

* quantify "slowness": Determine "slow" requests and make it actionable (what makes a slow request "slow"? Response times over 1 second?)

* check the periodic threaddump and search for patterns; correlate it with observed slowness (slow requests). It's definitely best if you could reproduce this in a lower environment and attach a profile to it to understand where the time is spend.

[Jörg_Hoh]

It depends mostly on our ecommerce application itself, and what else this AEM instance is supposed to do. Why don't you start with 4G of heap (-Xmx4G, -Xms4G) and then start with performance testing?