Using the default snapshot should be fine, and it should definitely not be
>2GiB in size. Something is weird there. I'd suggest investigating in more
depth (with a Debug build) where that negative size is coming from.
On Fri, Jun 24, 2022 at 7:06 PM Saad Al Abdullah <siamsoft...@gmail.com>
wrote:
> 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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