After migrating from ng 9 to 10 I get an error "JavaScript heap out of memory" during compilation!!

[kasarda]

🐞 bug report

Description

After migrating from ng 9 to 10 I sometimes get an error "JavaScript heap out of memory". I've never had this problem before ng 10. Also, the compilation takes more time than usual.

🔥 Exception or Error

<--- Last few GCs --->

[2747:0x1045db000]  3591806 ms: Mark-sweep 2025.9 (2081.7) -> 2013.2 (2083.5) MB, 2870.8 / 0.0 ms  (average mu = 0.101, current mu = 0.012) allocation failure scavenge might not succeed
[2747:0x1045db000]  3594247 ms: Mark-sweep 2028.9 (2083.5) -> 2016.9 (2084.0) MB, 2284.6 / 0.0 ms  (average mu = 0.083, current mu = 0.064) allocation failure scavenge might not succeed


<--- JS stacktrace --->

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
 1: 0x101231485 node::Abort() (.cold.1) [/usr/local/bin/node]
 2: 0x10009e059 node::Abort() [/usr/local/bin/node]
 3: 0x10009e1bf node::OnFatalError(char const*, char const*) [/usr/local/bin/node]
 4: 0x1001da207 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [/usr/local/bin/node]
 5: 0x1001da1a7 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [/usr/local/bin/node]
 6: 0x10036aed5 v8::internal::Heap::FatalProcessOutOfMemory(char const*) [/usr/local/bin/node]
 7: 0x10036c74a v8::internal::Heap::RecomputeLimits(v8::internal::GarbageCollector) [/usr/local/bin/node]
 8: 0x100368717 v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector, v8::GCCallbackFlags) [/usr/local/bin/node]
 9: 0x100366117 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [/usr/local/bin/node]
10: 0x1003733ba v8::internal::Heap::AllocateRawWithLightRetrySlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [/usr/local/bin/node]
11: 0x100373441 v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [/usr/local/bin/node]
12: 0x10033cd41 v8::internal::FactoryBase::AllocateRawWithImmortalMap(int, v8::internal::AllocationType, v8::internal::Map, v8::internal::AllocationAlignment) [/usr/local/bin/node]
13: 0x10033f839 v8::internal::Factory::NewByteArray(int, v8::internal::AllocationType) [/usr/local/bin/node]
14: 0x1002edd31 v8::internal::TranslationBuffer::CreateByteArray(v8::internal::Factory*) [/usr/local/bin/node]
15: 0x100f8cb2d v8::internal::compiler::CodeGenerator::GenerateDeoptimizationData() [/usr/local/bin/node]
16: 0x100f8c977 v8::internal::compiler::CodeGenerator::FinalizeCode() [/usr/local/bin/node]
17: 0x101172155 void v8::internal::compiler::PipelineImpl::Run() [/usr/local/bin/node]
18: 0x101166dac v8::internal::compiler::PipelineImpl::FinalizeCode(bool) [/usr/local/bin/node]
19: 0x101166c6b v8::internal::compiler::PipelineCompilationJob::FinalizeJobImpl(v8::internal::Isolate*) [/usr/local/bin/node]
20: 0x1002a4431 v8::internal::Compiler::FinalizeOptimizedCompilationJob(v8::internal::OptimizedCompilationJob*, v8::internal::Isolate*) [/usr/local/bin/node]
21: 0x1002c1e9b v8::internal::OptimizingCompileDispatcher::InstallOptimizedFunctions() [/usr/local/bin/node]
22: 0x1003252e4 v8::internal::StackGuard::HandleInterrupts() [/usr/local/bin/node]
23: 0x1006a5e97 v8::internal::Runtime_StackGuardWithGap(int, unsigned long*, v8::internal::Isolate*) [/usr/local/bin/node]
24: 0x1009eb8d9 Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit [/usr/local/bin/node]
25: 0x27b14751af72 
26: 0x1009844b8 Builtins_InterpreterEntryTrampoline [/usr/local/bin/node]
27: 0x27b147bab484 
28: 0x1009844b8 Builtins_InterpreterEntryTrampoline [/usr/local/bin/node]
zsh: abort      npm start

🌍 Your Environment

Angular Version:

Angular CLI: 9.0.1
Node: 14.3.0
OS: darwin x64

Angular: 
... 
Ivy Workspace: 

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.900.1
@angular-devkit/core         9.0.1
@angular-devkit/schematics   9.0.1
@schematics/angular          9.0.1
@schematics/update           0.900.1
rxjs                         6.5.3

[alan-agius4]

@kasarda, can you provide the output of ng version after the update? As it seems that you provided the output before the update.

Also, is there a way to share the project even privately?, as without a reproduction it's hard to tell what's the culprit.

In addition you mentioned that the compilation is taking more time than before, can you please provide some timings?

Thanks.

[alan-agius4]

Let’s continue tracking this #18034 since there is a reproduction.

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