Hello Jakob,
The only possible way to size (int size=-2133860350 <(213)%20386-0350>, ...)was
negative if there is int overflow. I am not using any external snapshot
blob during V8 isolate object creation which means V8 is using
DefaultSnapshotBlob data. I thought every time I create V8 isolate object,
it'll initialize from DefaultSnapshotBlob data and size is 1047264. Would
you give me some inside knowledge how snapshot is used during isolate
object creation if there is no external snapshot provided? Do you think
should I use an external snapshot object to initialize isolate object?
Thank you
Siam
On Fri, Jun 24, 2022 at 6:58 AM Jakob Kummerow <jkumme...@chromium.org>
wrote:
> AllocateRawOrFail(int size=-2133860350 <(213)%20386-0350>, ...) looks
> bad. Apparently that request is coming out of the snapshot...
>
>
> On Fri, Jun 24, 2022 at 2:41 AM Saad Al Abdullah <siamsoft...@gmail.com>
> wrote:
>
>> Hello,
>> I have aspnet core application and I create V8 isolate object for each
>> request and dispose end of the request. Sometimes I am seeing
>> FatalProcessOutOfMemory exceptions even though I have enough available
>> physical memory (RAM). Is there any heap limitation for V8 ?
>>
>>
>> v8.dll!v8::base::OS::Abort() Line 1114 C++ Symbols loaded.
>> v8.dll!v8::Utils::ReportOOMFailure(v8::internal::Isolate *
>> isolate=0x00000011b07f29f0, const char * location, bool is_heap_oom) Line
>> 340 C++ Symbols loaded.
>>
>> v8.dll!v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate *
>> isolate=0x00000203860d4270, const char * location=0x00000011b07f2500, bool
>> is_heap_oom) Line 306 C++ Symbols loaded.
>> v8.dll!v8::internal::Heap::FatalProcessOutOfMemory(const char *
>> location=0x0000020280d7fac0) Line 6363 C++ Symbols loaded.
>> [Inline Frame]
>> v8.dll!v8::internal::MemoryAllocator::HandleAllocationFailure() Line 294
>> C++ Symbols loaded.
>> v8.dll!v8::internal::MemoryAllocator::AllocateAlignedMemory(unsigned
>> __int64 chunk_size=262144, unsigned __int64 area_size=241664, unsigned
>> __int64 alignment=262144, v8::internal::Executability
>> executable=EXECUTABLE, void * hint=0x0000000000000000,
>> v8::internal::VirtualMemory * controller=0x00000011b07fbff0) Line 249
>> C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::MemoryAllocator::AllocateUninitializedChunk(v8::internal::BaseSpace
>> * space=0x0000020282b99730, unsigned __int64 area_size=241664,
>> v8::internal::Executability executable=EXECUTABLE, v8::internal::PageSize
>> page_size=kRegular) Line 357 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::MemoryAllocator::AllocatePage(v8::internal::MemoryAllocator::AllocationMode
>> alloc_mode, v8::internal::Space * space=0x0000020282b99730,
>> v8::internal::Executability executable=EXECUTABLE) Line 546 C++
>> Symbols loaded.
>> v8.dll!v8::internal::PagedSpace::Expand() Line 346 C++ Symbols
>> loaded.
>> [Inline Frame] v8.dll!v8::internal::PagedSpace::TryExpand(int) Line
>> 924 C++ Symbols loaded.
>> v8.dll!v8::internal::PagedSpace::RawRefillLabMain(int size_in_bytes,
>> v8::internal::AllocationOrigin origin=kRuntime) Line 974 C++ Symbols
>> loaded.
>> v8.dll!v8::internal::PagedSpace::RefillLabMain(int size_in_bytes,
>> v8::internal::AllocationOrigin origin) Line 909 C++ Symbols loaded.
>>
>> v8.dll!v8::internal::HeapAllocator::AllocateRawWithLightRetrySlowPath(int
>> size=-30, v8::internal::AllocationType allocation=kCode,
>> v8::internal::AllocationOrigin origin=kRuntime,
>> v8::internal::AllocationAlignment alignment=kTaggedAligned) Line 82 C++
>> Symbols loaded.
>>
>> v8.dll!v8::internal::HeapAllocator::AllocateRawWithRetryOrFailSlowPath(int
>> size=128, v8::internal::AllocationType allocation=' ',
>> v8::internal::AllocationOrigin origin=kRuntime,
>> v8::internal::AllocationAlignment alignment=kTaggedAligned) Line 108 C++
>> Symbols loaded.
>> v8.dll!v8::internal::Heap::AllocateRawOrFail(int size=-2133860350
>> <(213)%20386-0350>, v8::internal::AllocationType allocation=kCode,
>> v8::internal::AllocationOrigin origin=-1879576767,
>> v8::internal::AllocationAlignment alignment=kTaggedAligned) Line 209 C++
>> Symbols loaded.
>> [Inline Frame]
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::Allocate(v8::internal::AllocationType)
>> Line 1317 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadObject(v8::internal::SnapshotSpace
>> space) Line 671 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadSingleBytecodeData<v8::internal::SlotAccessorForHeapObject>(unsigned
>> char data, v8::internal::SlotAccessorForHeapObject slot_accessor={...})
>> Line 939 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadData(v8::internal::Handle<v8::internal::HeapObject>
>> object={...}, int start_slot_index, int end_slot_index=8) Line 908 C++
>> Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadObject(v8::internal::SnapshotSpace
>> space) Line 710 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadSingleBytecodeData<v8::internal::SlotAccessorForRootSlots>(unsigned
>> char data, v8::internal::SlotAccessorForRootSlots slot_accessor={...}) Line
>> 939 C++ Symbols loaded.
>> [Inline Frame]
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::ReadData(v8::internal::FullMaybeObjectSlot)
>> Line 920 C++ Symbols loaded.
>>
>>
>> v8.dll!v8::internal::Deserializer<v8::internal::Isolate>::VisitRootPointers(v8::internal::Root
>> root=-1333801424, const char * description=0x0000000000000001,
>> v8::internal::FullObjectSlot start, v8::internal::FullObjectSlot end={...})
>> Line 293 C++ Symbols loaded.
>>
>> v8.dll!v8::internal::RootVisitor::VisitRootPointer(v8::internal::Root
>> root, const char * description, v8::internal::FullObjectSlot p) Line 77
>> C++ Symbols loaded.
>> [Inline Frame]
>> v8.dll!v8::internal::Heap::IterateBuiltins(v8::internal::RootVisitor *)
>> Line 5135 C++ Symbols loaded.
>> v8.dll!v8::internal::Heap::IterateRoots(v8::internal::RootVisitor *
>> v=0x00000011b07fce30, v8::base::EnumSet<enum v8::internal::SkipRoot,int>
>> options={...}) Line 4994 C++ Symbols loaded.
>> > v8.dll!v8::internal::StartupDeserializer::DeserializeIntoIsolate()
>> Line 34 C++ Symbols loaded.
>> v8.dll!v8::internal::Isolate::Init(v8::internal::SnapshotData *
>> startup_snapshot_data=0x00000011b07fd2b0, v8::internal::SnapshotData *
>> read_only_snapshot_data=0x00000011b07fd298, v8::internal::SnapshotData *
>> shared_heap_snapshot_data=0x00000011b07fd280, bool can_rehash=false) Line
>> 4106 C++ Symbols loaded.
>> v8.dll!v8::internal::Snapshot::Initialize(v8::internal::Isolate *
>> isolate=0x00000203860d4270) Line 187 C++ Symbols loaded.
>> v8.dll!v8::Isolate::Initialize(v8::Isolate *
>> isolate=0x00000203860d4270, const v8::Isolate::CreateParams & params={...})
>> Line 8642 C++ Symbols loaded.
>> v8.dll!v8::Isolate::New(const v8::Isolate::CreateParams &
>> params={...}) Line 8680 C++ Symbols loaded.
>> [Inline Frame] v8.dll!V8RuntimeImp::{ctor}(unsigned __int64) Line 65
>> C++ Symbols loaded.
>> v8.dll!CreateV8RunTime(int max_old_space_in_MB, int
>> max_semi_space_in_MB, void * * runtimeHandler=0x00000011b07fd678) Line 41
>> C++ Symbols loaded.
>>
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