// defaultNetworkInterfaceName is used for collectng network stats.
// This logic relies on knowledge of the container runtime implementation and
// is not reliable.
const defaultNetworkInterfaceName = "eth0"

func cadvisorInfoToCPUandMemoryStats(info *cadvisorapiv2.ContainerInfo) (*statsapi.CPUStats, *statsapi.MemoryStats) {
	cstat, found := latestContainerStats(info)
	if !found {
		return nil, nil
	}
	var cpuStats *statsapi.CPUStats

		podUID := types.UID(podStats.PodRef.UID)
		// Lookup the pod-level cgroup's CPU and memory stats
		podInfo := getCadvisorPodInfoFromPodUID(podUID, allInfos)
		if podInfo != nil {
			cpu, memory := cadvisorInfoToCPUandMemoryStats(podInfo)
			podStats.CPU = cpu
			podStats.Memory = memory
			podStats.Swap = cadvisorInfoToSwapStats(podInfo)
			podStats.ProcessStats = cadvisorInfoToProcessStats(podInfo)
		}

	cs *statsapi.ContainerStats,
) {
	// try get cpu and memory stats from cadvisor first.
	podCgroupInfo := getCadvisorPodInfoFromPodUID(podUID, allInfos)
	if podCgroupInfo != nil {
		cpu, memory := cadvisorInfoToCPUandMemoryStats(podCgroupInfo)
		ps.CPU = cpu
		ps.Memory = memory
		return
	}

	// Sum Pod cpu and memory stats from containers stats.
	if cs.CPU != nil {
		if ps.CPU == nil {