OOM on initial sync

[austinhuang0131]

Bug Description

# [ERROR] Error during processing events - Out of Memory
#0      new Uint8List.fromList (dart:typed_data-patch/typed_data_patch.dart)
#1      ByteStream.toBytes.<anonymous closure> (package:http/src/byte_stream.dart)
#2      _ByteCallbackSink.close (dart:convert/byte_conversion.dart)
#3      _RootZone.runGuarded (dart:async/zone.dart)
#4      _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart)
#5      _FutureListener.handleWhenComplete (dart:async/future_impl.dart)
#6      Future._propagateToListeners.handleWhenCompleteCallback (dart:async/future_impl.dart)
#7      Future._propagateToListeners (dart:async/future_impl.dart)
#8      Future._prependListeners.<anonymous closure> (dart:async/future_impl.dart)
#9      _microtaskLoop (dart:async/schedule_microtask.dart)
#10     _startMicrotaskLoop (dart:async/schedule_microtask.dart)
#11     _rootRun (dart:async/zone.dart)
#12     _CustomZone.run (dart:async/zone.dart)
#13     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart)
#14     _microtaskLoop (dart:async/schedule_microtask.dart)
#15     _startMicrotaskLoop (dart:async/schedule_microtask.dart)

Steps to Reproduce

It seems to only be for my account and I don't know the exact conditions.

1. Log in.
2. Wait for initial sync to finish.

Expected Behavior

Initial sync finishes.

App Version

1.17.0 (F-Droid); also present in past version but without logs appearing

Additional Platform Information

Android 9 (Sony H3123)

Additional Context

No response

[krille-chan]

Do you have some more info how much memory your device has an how big your room is?

[austinhuang0131]

3 GB?

It's an initial sync. I have around 260 DMs and 80 rooms; some (like 10) of them are quite active but are not at Matrix HQ level of madness.

[morguldir]

I think this is mostly the same as #792, except the iOS app just freezes for a second when it ooms, i can also see iOS suspending every background app for fluffychat and it getting warmer Like noted in #792 though, the spaces list works and if you go to a room you can see that it's actually synced, it's just the room list / chat backup that isn't working.

Note that I'm using multi account support, have 6gb of ram, and my account is pretty large, my main personal account with just like 20 dm rooms loads fine though.

Submitted a testflight screenshot, but not sure what that does, can't seem to copy the logs on iOS, but they mention OOM from SqfliteDatabaseMixin

[morguldir]

Reproducable by joining https://matrix.to/#/#community-moderation-effort-bl:neko.dev

Seems like you need to log back out if it's already stuck though, and it doesn't effect existing logins, although it might just have been slow to propagate

This is where it was stuck for me, looked like infinite recursion with m.policy.user events https://github.com/famedly/matrix-dart-sdk/blob/566f960b921a3ab691d8481441a6167b808a278e/lib/src/client.dart#L2119-L2121

[TheArcaneBrony]

@morguldir I don't think its recursing, its just that CME has thousands of user policy events

[morguldir]

What does that have to do with FluffyChat using over 6gb of ram :3

[morguldir]

Or maybe you're right, just matrix-org-coc-bl put it to 4gb, which my browser was allowed to use. So I guess it uses too much ram trying to map the policy lists, which crashes due to costing too much ram, and then it retries but crashes again :thinking:

[Kladki]

Same issue here.

• Fluffychat 1.18.0 (F-droid)
• Redmi Note 9 Pro (6GB ram)
• Android 12 / MIUI 14

What is interesting in my case is that it becomes almost unresponsive, only updating the screen every 10-30 seconds.

[Kladki]

Specifically, I can reproduce this by joining https://matrix.to/#/#community-moderation-effort-bl:neko.dev on any of my accounts on my phone.

[Kladki]

Seems like you need to log back out if it's already stuck though, and it doesn't effect existing logins, although it might just have been slow to propagate

For me it did effect one of my existing logins.

[github-actions[bot]]

This issue is stale because it has been open for 120 days with no activity.

[austinhuang0131]

silence stalebot