Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Frequently hitting the memory limit when running frontend tests

See original GitHub issue

When running the frontend tests, I get the following error quite frequently:

ℹ ｢wdm｣: Compiled with warnings.

<--- Last few GCs --->

[9224:0x4c3aa40]   101593 ms: Scavenge 1748.0 (1837.9) -> 1736.8 (1837.7) MB, 5.6 / 0.1 ms  (average mu = 0.923, current mu = 0.901) allocation failure 
[9224:0x4c3aa40]   101629 ms: Scavenge 1750.1 (1837.7) -> 1737.7 (1838.0) MB, 4.6 / 0.1 ms  (average mu = 0.923, current mu = 0.901) allocation failure 
[9224:0x4c3aa40]   101672 ms: Scavenge 1752.6 (1838.0) -> 1738.7 (1838.0) MB, 3.4 / 0.2 ms  (average mu = 0.923, current mu = 0.901) allocation failure 


<--- JS stacktrace --->

FATAL ERROR: MarkCompactCollector: young object promotion failed Allocation failed - JavaScript heap out of memory
 1: 0xa03530 node::Abort() [node]
 2: 0x94e471 node::FatalError(char const*, char const*) [node]
 3: 0xb7773e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
 4: 0xb77ab7 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
 5: 0xd32345  [node]
 6: 0xd62ede v8::internal::EvacuateNewSpaceVisitor::Visit(v8::internal::HeapObject, int) [node]
 7: 0xd6ef16 v8::internal::FullEvacuator::RawEvacuatePage(v8::internal::MemoryChunk*, long*) [node]
 8: 0xd5b0ff v8::internal::Evacuator::EvacuatePage(v8::internal::MemoryChunk*) [node]
 9: 0xd5b378 v8::internal::PageEvacuationTask::RunInParallel(v8::internal::ItemParallelJob::Task::Runner) [node]
10: 0xd4dc59 v8::internal::ItemParallelJob::Run() [node]
11: 0xd70e70 void v8::internal::MarkCompactCollectorBase::CreateAndExecuteEvacuationTasks<v8::internal::FullEvacuator, v8::internal::MarkCompactCollector>(v8::internal::MarkCompactCollector*, v8::internal::ItemParallelJob*, v8::internal::MigrationObserver*, long) [node]
12: 0xd7170c v8::internal::MarkCompactCollector::EvacuatePagesInParallel() [node]
13: 0xd718d5 v8::internal::MarkCompactCollector::Evacuate() [node]
14: 0xd838c1 v8::internal::MarkCompactCollector::CollectGarbage() [node]
15: 0xd3fbe8 v8::internal::Heap::MarkCompact() [node]
16: 0xd416d8 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
17: 0xd44b1c v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node]
18: 0xd131fb v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationType, v8::internal::AllocationOrigin) [node]
19: 0x105919f v8::internal::Runtime_AllocateInYoungGeneration(int, unsigned long*, v8::internal::Isolate*) [node]
20: 0x13ff179  [node]
Done!
The frontend tests failed. Please fix it before running the test coverage check.

Machine specs: RAM: 8 GB Processor: Intel Core i5 CPU @ 1.60GHz × 8