system

type MemoryConstraints struct {
	// MaxHeapMem is the maximum heap memory that has been set by the user
	// through the LOTUS_MAX_HEAP env variable. If zero, there is no max heap
	// limit set.
	MaxHeapMem uint64

	// TotalSystemMem is the total system memory as reported by go-sigar. If
	// zero, it was impossible to determine the total system memory.
	TotalSystemMem uint64

	// EffectiveMemLimit is the memory limit in effect, in bytes.
	//
	// In order of precedence:
	//  1. MaxHeapMem if non-zero.
	//  2. TotalSystemMem if non-zero.
	//  3. Zero (no known limit).
	EffectiveMemLimit uint64
}