[SOLVED] FATAL ERROR: Ineffective mark-compacts near heap limit

FATAL ERROR: Ineffective mark-compacts near heap limit

I am getting this error. Could somebody provide me with a small explanation? I don't even know what I need to fix.

I am getting this error during typescript compilation.



<--- Last few GCs --->

[1791:0x5533880]    72626 ms: Scavenge (reduce) 2042.8 (2082.2) -> 2042.1 (2082.5) MB, 10.0 / 0.0 ms  (average mu = 0.287, current mu = 0.243) allocation failure 
[1791:0x5533880]    74247 ms: Mark-sweep (reduce) 2043.0 (2082.5) -> 2037.5 (2082.5) MB, 1617.4 / 0.0 ms  (average mu = 0.225, current mu = 0.159) allocation failure scavenge might not succeed


<--- JS stacktrace --->

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
 1: 0xb09c10 node::Abort() [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 2: 0xa1c193 node::FatalError(char const*, char const*) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 3: 0xcf8dbe v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 4: 0xcf9137 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 5: 0xeb09d5  [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 6: 0xeb14b6  [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 7: 0xebf9de  [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 8: 0xec0420 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
 9: 0xec339e v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
10: 0xe848da v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationType, v8::internal::AllocationOrigin) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
11: 0x11fd626 v8::internal::Runtime_AllocateInYoungGeneration(int, unsigned long*, v8::internal::Isolate*) [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]
12: 0x15f2099  [/opt/hostedtoolcache/node/16.15.0/x64/bin/node]

Node.js : 16.15.0 TypeScript : 4.2.4

Solution

Your memory consumption is at ~2GB, and the garbage collector is unable to free up any, despite trying very hard. Some allocation request needs more memory than is left available, so a crash is the only option to deal with that.

Solution 1: use less memory. The details depend on your application:

maybe you have caches you could clear or downsize
maybe you could operate on smaller chunks of data or serve fewer concurrent requests
maybe you could find more memory-efficient ways to represent the data you're working with
maybe your code has memory leaks (i.e. is unintentionally holding on to objects that aren't actually required any more) that you could find and fix
probably a dozen other possibilities.

Solution 2: allow Node to use more memory by using --max-old-space-size=3000 (or some other value greater than the current/default limit; the value is in megabytes).