Skip to content
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
67 lines (52 sloc) 2.37 KB
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
package metrics
import (
// GetResourceUtilizationRatio takes in a set of metrics, a set of matching requests,
// and a target utilization percentage, and calculates the ratio of
// desired to actual utilization (returning that, the actual utilization, and the raw average value)
func GetResourceUtilizationRatio(metrics PodMetricsInfo, requests map[string]int64, targetUtilization int32) (utilizationRatio float64, currentUtilization int32, rawAverageValue int64, err error) {
metricsTotal := int64(0)
requestsTotal := int64(0)
numEntries := 0
for podName, metric := range metrics {
request, hasRequest := requests[podName]
if !hasRequest {
// we check for missing requests elsewhere, so assuming missing requests == extraneous metrics
metricsTotal += metric.Value
requestsTotal += request
// if the set of requests is completely disjoint from the set of metrics,
// then we could have an issue where the requests total is zero
if requestsTotal == 0 {
return 0, 0, 0, fmt.Errorf("no metrics returned matched known pods")
currentUtilization = int32((metricsTotal * 100) / requestsTotal)
return float64(currentUtilization) / float64(targetUtilization), currentUtilization, metricsTotal / int64(numEntries), nil
// GetMetricUtilizationRatio takes in a set of metrics and a target utilization value,
// and calcuates the ratio of desired to actual utilization
// (returning that and the actual utilization)
func GetMetricUtilizationRatio(metrics PodMetricsInfo, targetUtilization int64) (utilizationRatio float64, currentUtilization int64) {
metricsTotal := int64(0)
for _, metric := range metrics {
metricsTotal += metric.Value
currentUtilization = metricsTotal / int64(len(metrics))
return float64(currentUtilization) / float64(targetUtilization), currentUtilization
You can’t perform that action at this time.