100*(sum (container_memory_working_set_bytes{namespace=~"argo|khaos|obs|kube-system"}) by (khaos_product,khaos_cluster,namespace,app_name,pod,container)/sum (container_spec_memory_limit_bytes{namespace=~"argo|khaos|obs|kube-system"}) by (khaos_product,khaos_cluster,namespace,app_name,pod,container) <= 1)

func setMemoryStats(s *cgroups.Stats, ret *info.ContainerStats) {
	ret.Memory.Usage = s.MemoryStats.Usage.Usage
	ret.Memory.MaxUsage = s.MemoryStats.Usage.MaxUsage
	ret.Memory.Failcnt = s.MemoryStats.Usage.Failcnt
	ret.Memory.KernelUsage = s.MemoryStats.KernelUsage.Usage

	if cgroups.IsCgroup2UnifiedMode() {
		ret.Memory.Cache = s.MemoryStats.Stats["file"]
		ret.Memory.RSS = s.MemoryStats.Stats["anon"]
		ret.Memory.Swap = s.MemoryStats.SwapUsage.Usage - s.MemoryStats.Usage.Usage
		ret.Memory.MappedFile = s.MemoryStats.Stats["file_mapped"]
	} else if s.MemoryStats.UseHierarchy {
		ret.Memory.Cache = s.MemoryStats.Stats["total_cache"]
		ret.Memory.RSS = s.MemoryStats.Stats["total_rss"]
		ret.Memory.Swap = s.MemoryStats.Stats["total_swap"]
		ret.Memory.MappedFile = s.MemoryStats.Stats["total_mapped_file"]
	} else {
		ret.Memory.Cache = s.MemoryStats.Stats["cache"]
		ret.Memory.RSS = s.MemoryStats.Stats["rss"]
		ret.Memory.Swap = s.MemoryStats.Stats["swap"]
		ret.Memory.MappedFile = s.MemoryStats.Stats["mapped_file"]
	}
	if v, ok := s.MemoryStats.Stats["pgfault"]; ok {
		ret.Memory.ContainerData.Pgfault = v
		ret.Memory.HierarchicalData.Pgfault = v
	}
	if v, ok := s.MemoryStats.Stats["pgmajfault"]; ok {
		ret.Memory.ContainerData.Pgmajfault = v
		ret.Memory.HierarchicalData.Pgmajfault = v
	}

	inactiveFileKeyName := "total_inactive_file"
	if cgroups.IsCgroup2UnifiedMode() {
		inactiveFileKeyName = "inactive_file"
	}

	workingSet := ret.Memory.Usage
	if v, ok := s.MemoryStats.Stats[inactiveFileKeyName]; ok {
		if workingSet < v {
			workingSet = 0
		} else {
			workingSet -= v
		}
	}
	ret.Memory.WorkingSet = workingSet
}

func getMemoryData(path, name string) (cgroups.MemoryData, error) {
	memoryData := cgroups.MemoryData{}

	moduleName := "memory"
	if name != "" {
		moduleName = "memory." + name
	}
	var (
		usage    = moduleName + ".usage_in_bytes"
		maxUsage = moduleName + ".max_usage_in_bytes"
		failcnt  = moduleName + ".failcnt"
		limit    = moduleName + ".limit_in_bytes"
	)

	value, err := fscommon.GetCgroupParamUint(path, usage)
	if err != nil {
		if name != "" && os.IsNotExist(err) {
			// Ignore ENOENT as swap and kmem controllers
			// are optional in the kernel.
			return cgroups.MemoryData{}, nil
		}
		return cgroups.MemoryData{}, err
	}
	memoryData.Usage = value
	value, err = fscommon.GetCgroupParamUint(path, maxUsage)
	if err != nil {
		return cgroups.MemoryData{}, err
	}
	memoryData.MaxUsage = value
	value, err = fscommon.GetCgroupParamUint(path, failcnt)
	if err != nil {
		return cgroups.MemoryData{}, err
	}
	memoryData.Failcnt = value
	value, err = fscommon.GetCgroupParamUint(path, limit)
	if err != nil {
		if name == "kmem" && os.IsNotExist(err) {
			// Ignore ENOENT as kmem.limit_in_bytes has
			// been removed in newer kernels.
			return memoryData, nil
		}

		return cgroups.MemoryData{}, err
	}
	memoryData.Limit = value

	return memoryData, nil
}