[cloud_firestore]: Very Slow App Performance - Waiting for a blocking GC Alloc - Android Only #17805
Description
Is there an existing issue for this?
- I have searched the existing issues.
Which plugins are affected?
No response
Which platforms are affected?
Android
Description
My application in production has suddenly started becoming very slow. I am using Firebase streams to load various lists from Firestore. The problem occurs only in Android. I tried replacing the streams with normal firestore db fetch with limits but still the issue persists. Its taking a very long time to fetch the data.
Reproducing the issue
class TrainerRepositoryImpl extends TrainerRepository {
final AuthService _authService = Get.find();
@override
Future<Trainer?> getTrainer(String userId) async {
// QuerySnapshot snapshot =
// await collectionReference.where("id", isEqualTo: userId).get();
return (await collectionReference.doc(userId).get()).data();
// if (snapshot.docs.isNotEmpty)
// return snapshot.docs.first.data() as Rider;
// else
// return null;
}
@override
Future<Trainer?> addTrainer(Trainer trainer) async {
try {
await collectionReference.doc(trainer.id).set(trainer);
} catch (e) {
return null;
}
return await getTrainer(trainer.id);
}
@override
Future<bool> exists(String userId) async {
QuerySnapshot snapshot =
await collectionReference.where("id", isEqualTo: userId).get();
if (snapshot.docs.isNotEmpty) {
return true;
} else {
return false;
}
}
@override
Future<Trainer?> updateTrainer(Trainer trainer) async {
Trainer? t;
// User? user = _authService.currentUser;
await collectionReference
.doc(trainer.id)
.set(trainer, SetOptions(merge: true))
.then((value) async {
t = await getTrainer(trainer.id);
if (kDebugMode) {
print('Trainer Repository : Trainer Successfully updated');
}
}).onError((error, stackTrace) {
if (kDebugMode) {
print(error);
}
throw DataWriteException();
});
return t;
}
@override
Stream<Trainer> get trainerStream {
StreamController<Trainer> streamController = StreamController.broadcast();
Stream<Trainer> stream = streamController.stream;
collectionReference
.doc(_authService.currentUser?.uid)
.snapshots()
.listen((event) {
Trainer? t = event.data();
if (t != null) {
streamController.add(t);
}
});
return stream;
}
@override
Future<String> uploadProfilePic(File file) async {
if (kDebugMode) {
print('Uploading profile pic');
}
var ref =
storageReference.child('profile_pic.${file.path.split('.').last}');
if (kDebugMode) {
print(storageReference.fullPath);
}
String url = '';
try {
await ref.putFile(file).then((p0) async {
url = await ref.getDownloadURL();
if (kDebugMode) {
print(url);
}
});
} catch (e) {
if (kDebugMode) {
print(e);
}
throw FileUploadException();
}
return url;
}
@override
Future<String> uploadDriversLicence(File file) async {
if (kDebugMode) {
print('Uploading Drivers License');
}
var ref =
storageReference.child("/drivers_license/${file.path.split('/').last}");
String url = '';
try {
await ref.putFile(file).then((p0) async {
url = await ref.getDownloadURL();
});
} catch (e) {
throw DataWriteException();
}
return url;
}
@override
Future<void> updateFirebaseMessagingDeviceToken(String token) async {
try {
await collectionReference.doc(_authService.currentUser?.uid).update({
"notificationConfig": {
'deviceTokens': [token],
'createdAt': FieldValue.serverTimestamp(), // optional
'platform': Platform.operatingSystem // optional
}
});
} catch (e) {
throw DatabaseException();
}
}
@override
Future<void> removeFirebaseMessagingDeviceToken(String? token) async {
try {
await collectionReference.doc(_authService.currentUser?.uid).update({
"notificationConfig": {
'deviceTokens': FieldValue.arrayRemove([token]),
'createdAt': FieldValue.serverTimestamp(), // optional
'platform': Platform.operatingSystem // optional
}
});
} catch (e) {
throw DatabaseException();
}
}
@override
Future<void> deleterTrainer(Trainer trainer) async {
await collectionReference.doc(trainer.id).delete();
}
}
Firebase Core version
3.5.0
Flutter Version
3.56.6
Relevant Log Output
W/WindowOnBackDispatcher(23991): OnBackInvokedCallback is not enabled for the application.
W/WindowOnBackDispatcher(23991): Set 'android:enableOnBackInvokedCallback="true"' in the application manifest.
I/s.iturn.trainer(23991): Background young concurrent copying GC freed 55MB AllocSpace bytes, 6(26MB) LOS objects, 27% free, 165MB/229MB, paused 927us,283us total 251.112ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Background concurrent copying GC freed 133MB AllocSpace bytes, 18(31MB) LOS objects, 51% free, 90MB/186MB, paused 48us,38us total 436.682ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 161.600ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 161.770ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 162.094ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 160.523ms
I/s.iturn.trainer(23991): Background young concurrent copying GC freed 65MB AllocSpace bytes, 9(5096KB) LOS objects, 37% free, 116MB/186MB, paused 44us,44us total 102.625ms
I/s.iturn.trainer(23991): Background young concurrent copying GC freed 33MB AllocSpace bytes, 2(1440KB) LOS objects, 18% free, 152MB/186MB, paused 74us,40us total 141.753ms
I/s.iturn.trainer(23991): Background concurrent copying GC freed 33MB AllocSpace bytes, 9(6420KB) LOS objects, 39% free, 148MB/244MB, paused 108us,762us total 324.988ms
I/s.iturn.trainer(23991): Background young concurrent copying GC freed 46MB AllocSpace bytes, 0(0B) LOS objects, 17% free, 201MB/244MB, paused 49us,37us total 194.286ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Clamp target GC heap from 308MB to 256MB
I/s.iturn.trainer(23991): Background concurrent copying GC freed 21MB AllocSpace bytes, 34(22MB) LOS objects, 17% free, 212MB/256MB, paused 48us,34us total 452.134ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 415.454ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 414.003ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 171.398ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 96.351ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 96.755ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Clamp target GC heap from 343MB to 256MB
I/s.iturn.trainer(23991): Background concurrent copying GC freed 9058KB AllocSpace bytes, 0(0B) LOS objects, 3% free, 247MB/256MB, paused 89us,34us total 469.863ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 469.006ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 469.128ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 25.254ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 25.648ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Starting a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Clamp target GC heap from 350MB to 256MB
I/s.iturn.trainer(23991): Background concurrent copying GC freed 1841KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 254MB/256MB, paused 99us,32us total 457.977ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 458.423ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 452.535ms
I/s.iturn.trainer(23991): Forcing collection of SoftReferences for 24B allocation
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Clamp target GC heap from 351MB to 256MB
I/s.iturn.trainer(23991): Alloc concurrent copying GC freed 996KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 255MB/256MB, paused 81us,34us total 889.822ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Background on Alloc for 852.759ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Alloc for 848.715ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Alloc for 254.614ms
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
W/s.iturn.trainer(23991): Throwing OutOfMemoryError "Failed to allocate a 24 byte allocation with 0 free bytes and 0B until OOM, target footprint 268435456, growth limit 268435456" (VmSize 22783260 kB)
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 16.107ms
I/s.iturn.trainer(23991): WaitForGcToComplete blocked Alloc on Background for 13.482ms
E/AndroidRuntime(23991): FATAL EXCEPTION: pool-16-thread-7
E/AndroidRuntime(23991): Process: com.ucmonks.iturn.trainer, PID: 23991
E/AndroidRuntime(23991): java.lang.OutOfMemoryError: Failed to allocate a 24 byte allocation with 0 free bytes and 0B until OOM, target footprint 268435456, growth limit 268435456
E/AndroidRuntime(23991): at java.util.HashMap.newNode(HashMap.java:1907)
E/AndroidRuntime(23991): at java.util.HashMap.putVal(HashMap.java:636)
E/AndroidRuntime(23991): at java.util.HashMap.put(HashMap.java:617)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertArray(UserDataWriter.java:140)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:69)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertArray(UserDataWriter.java:140)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:69)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertArray(UserDataWriter.java:140)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:69)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertArray(UserDataWriter.java:140)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:69)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertValue(UserDataWriter.java:67)
E/AndroidRuntime(23991): at com.google.firebase.firestore.UserDataWriter.convertObject(UserDataWriter.java:101)
E/AndroidRuntime(23991): at com.google.firebase.firestore.DocumentSnapshot.getData(DocumentSnapshot.java:148)
E/AndroidRuntime(23991): at com.google.firebase.firestore.QueryDocumentSnapshot.getData(QueryDocumentSnapshot.java:83)
E/AndroidRuntime(23991): at io.flutter.plugins.firebase.firestore.utils.PigeonParser.toPigeonDocumentSnapshot(PigeonParser.java:138)
E/AndroidRuntime(23991): at io.flutter.plugins.firebase.firestore.utils.PigeonParser.toPigeonDocumentSnapshots(PigeonParser.java:151)
E/AndroidRuntime(23991): at io.flutter.plugins.firebase.firestore.utils.PigeonParser.toPigeonQuerySnapshot(PigeonParser.java:68)
E/AndroidRuntime(23991): at io.flutter.plugins.firebase.firestore.FlutterFirebaseFirestorePlugin.lambda$queryGet$17(FlutterFirebaseFirestorePlugin.java:763)
E/AndroidRuntime(23991): at io.flutter.plugins.firebase.firestore.FlutterFirebaseFirestorePlugin$$ExternalSyntheticLambda12.run(D8$$SyntheticClass:0)
E/AndroidRuntime(23991): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
E/AndroidRuntime(23991): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
E/AndroidRuntime(23991): at java.lang.Thread.run(Thread.java:1119)
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/s.iturn.trainer(23991): Waiting for a blocking GC Alloc
I/Process (23991): Sending signal. PID: 23991 SIG: 9
Lost connection to device.Flutter dependencies
Expand Flutter dependencies snippet
firebase_core: ^3.5.0
cloud_firestore: ^5.4.2
firebase_analytics: ^11.3.2
firebase_auth: ^5.3.0
firebase_messaging: ^15.1.2
firebase_storage: ^12.3.1
firebase_app_check: ^0.3.2
cloud_functions: ^5.1.2
Additional context and comments
No response