Memory Management in Xamarin Forms Project (Specifically Android)

[dharamhbtik]

We have an Android app that is developed in the latest version of Xamarin and used the following major dependencies/libraries

1. PRISM
2. REALM for Local Storage
3. Library for Reactive Programming (Using Observables)

When we are doing profiling, the app is using around 600 MB of runtime memory which looks huge and gets increased over time. See attached memory utilization graph after 2 hours of profiling

We are trying to optimize it by identifying the piece of code from where there might be a chance of memory leak or the places where objects are continuously used or the places where any background task is continuously running.

I have a few questions :

1. Is it good to force the Garbage collector to run when the app goes to the background or Idle for a few minutes? (got something on Microsoft but not sure https://learn.microsoft.com/en-us/xamarin/android/internals/garbage-collection). Will this help to reduce memory utilization? Or it will create issues by creating unfragmented memory spaces?
2. In the graph, you see it is showing a large amount of memory being used by some "Others". Is there a way to know what contains these "Others"?
3. Any other way to optimize the Xamarin (C#) code that can manage the memory in the Mono Framework? (Ob course we are using IDisposble, using block extensively )
4. Any other way to optimize this to make sure less memory usage at run time?
5. We also tried Layout Compression and Fast renderers too for Controls Tree Structure optimization but still memory consumption is 500+ MB. Any other way to optimize the XAML code (have seen and implemented the guide provided by Microsoft for Xmaarin layout optimization)
6. Is there any way or a good tool for performance testing of the Mobile app (apart from Profiling)?