FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory

[limbo200]

Hello,

I'm encountering a memory allocation issue despite increasing the memory allocated to Node.js (using the command export NODE_OPTIONS="--max-old-space-size=12192"). I am attempting to compare two PHP files, each containing approximately 3,600 lines of code. However, I encounter the following error message:

<--- Last few GCs --->

[196:0x6b31660]    82235 ms: Mark-sweep 12138.4 (12228.2) -> 12127.9 (12234.9) MB, 272.8 / 0.0 ms  (average mu = 0.531, current mu = 0.280) allocation failure; scavenge might not succeed
[196:0x6b31660]    82522 ms: Mark-sweep 12143.7 (12234.9) -> 12132.3 (12240.2) MB, 273.4 / 0.0 ms  (average mu = 0.356, current mu = 0.048) allocation failure; scavenge might not succeed


<--- JS stacktrace --->

FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
 1: 0xb7b150 node::Abort() [node]
 2: 0xa8c89a  [node]
 3: 0xd62ea0 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
 4: 0xd63247 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
 5: 0xf40945  [node]
 6: 0xf52e2d v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
 7: 0xf2d52e v8::internal::HeapAllocator::AllocateRawWithLightRetrySlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node]
 8: 0xf2e8f7 v8::internal::HeapAllocator::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node]
 9: 0xf0faca v8::internal::Factory::NewFillerObject(int, v8::internal::AllocationAlignment, v8::internal::AllocationType, v8::internal::AllocationOrigin) [node]
10: 0x12d33bf v8::internal::Runtime_AllocateInYoungGeneration(int, unsigned long*, v8::internal::Isolate*) [node]
11: 0x17001f9  [node]

[rien]

Hi @rgrcnh, this could happen for very large and contain some problematic code blocks (repeating fragments can be an issue, see #820). However, 3600 lines of code should still be doable.

Can you try increasing the k-gram and window size? For example, you could run:

dolos -f web -l php -k 100 -w 100 <file1.php> <file2.php>

Is it possible to mail me these two (anonymized) PHP files? So I can analyze and profile Dolos with them locally. You can mail them to [email protected]