Memory consumption is high while syncing

[Chlup]

@pacu discovered this while reviewing #1009. After some debugging I found out that same happens in the main branch. So it's not related to the parallel downloading.

[Chlup]

This is the stack trace that allocates most of the memory:

[Chlup]

It looks like that this is problem only when running the SDK in the iOS simulator. On real device (when I run sync in the Sample app) memory consumption stops at ~148MB and then it is slowly decreasing and stops around 60MB. It is super strange. But it also means that it doesn't affect any real user.

[pacu]

shall we open a ticket in Swift-GRPC itself?

[tw0po1nt]

@pacu I'm at the point with the secant version of nighthawk that I am actually successfully creating and importing wallets. However, whenever I try to import an wallet from a bit ago (around 270,000 blocks ago) and run it on device (iPhone SE 3rd generation, iOS 16.3.1), my memory is ballooning to the point where the system kills it. So I do think this may be an issue beyond the simulator.

[pacu]

@pacu I'm at the point with the secant version of nighthawk that I am actually successfully creating and importing wallets. However, whenever I try to import an wallet from a bit ago (around 270,000 blocks ago) and run it on device (iPhone SE 3rd generation, iOS 16.3.1), my memory is ballooning to the point where the system kills it. So I do think this may be an issue beyond the simulator.

thanks for reporting this. We are still chasing this down, any additional context or hints are welcome!

[Chlup]

@tw0po1nt Can you please run your app from the Xcode and then make screenshot of memory consumption graph? So we know what is exactly happening on your device?

[pacu]

Tested on iPhone 7 that workaround on 0.22.0-beta works properly