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src: properly configure default heap limits #25576

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src: properly configure default heap limits #25576

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9 changes: 9 additions & 0 deletions src/api/environment.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,15 @@ void FreeArrayBufferAllocator(ArrayBufferAllocator* allocator) {
Isolate* NewIsolate(ArrayBufferAllocator* allocator, uv_loop_t* event_loop) {
Isolate::CreateParams params;
params.array_buffer_allocator = allocator;

double total_memory = uv_get_total_memory();
if (total_memory > 0) {
// V8 defaults to 700MB or 1.4GB on 32 and 64 bit platforms respectively.
// This default is based on browser use-cases. Tell V8 to configure the
// heap based on the actual physical memory.
params.constraints.ConfigureDefaults(total_memory, 0);
}

#ifdef NODE_ENABLE_VTUNE_PROFILING
params.code_event_handler = vTune::GetVtuneCodeEventHandler();
#endif
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