kubernetes most_allocated 源码
kubernetes most_allocated 代码
文件路径：/pkg/scheduler/framework/plugins/noderesources/most_allocated.go
/*
Copyright 2019 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
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package noderesources
import (
"k8s.io/kubernetes/pkg/scheduler/framework"
)
// mostResourceScorer favors nodes with most requested resources.
// It calculates the percentage of memory and CPU requested by pods scheduled on the node, and prioritizes
// based on the maximum of the average of the fraction of requested to capacity.
//
// Details:
// (cpu(MaxNodeScore * requested * cpuWeight / capacity) + memory(MaxNodeScore * requested * memoryWeight / capacity) + ...) / weightSum
func mostResourceScorer(resToWeightMap resourceToWeightMap) func(requested, allocable resourceToValueMap) int64 {
return func(requested, allocable resourceToValueMap) int64 {
var nodeScore, weightSum int64
for resource := range requested {
weight := resToWeightMap[resource]
resourceScore := mostRequestedScore(requested[resource], allocable[resource])
nodeScore += resourceScore * weight
weightSum += weight
}
if weightSum == 0 {
return 0
}
return nodeScore / weightSum
}
}
// The used capacity is calculated on a scale of 0-MaxNodeScore (MaxNodeScore is
// constant with value set to 100).
// 0 being the lowest priority and 100 being the highest.
// The more resources are used the higher the score is. This function
// is almost a reversed version of noderesources.leastRequestedScore.
func mostRequestedScore(requested, capacity int64) int64 {
if capacity == 0 {
return 0
}
if requested > capacity {
// `requested` might be greater than `capacity` because pods with no
// requests get minimum values.
requested = capacity
}
return (requested * framework.MaxNodeScore) / capacity
}
相关信息
相关文章
kubernetes balanced_allocation 源码
kubernetes balanced_allocation_test 源码
kubernetes least_allocated_test 源码
kubernetes most_allocated_test 源码
kubernetes requested_to_capacity_ratio 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦