diff options
Diffstat (limited to 'kube2msb/src/vendor/k8s.io/kubernetes/pkg/kubelet/qos/policy.go')
| -rw-r--r-- | kube2msb/src/vendor/k8s.io/kubernetes/pkg/kubelet/qos/policy.go | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/kube2msb/src/vendor/k8s.io/kubernetes/pkg/kubelet/qos/policy.go b/kube2msb/src/vendor/k8s.io/kubernetes/pkg/kubelet/qos/policy.go deleted file mode 100644 index ad696f3..0000000 --- a/kube2msb/src/vendor/k8s.io/kubernetes/pkg/kubelet/qos/policy.go +++ /dev/null @@ -1,66 +0,0 @@ -/* -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 - - 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 qos - -import ( - "k8s.io/kubernetes/pkg/api" -) - -const ( - PodInfraOOMAdj int = -999 - KubeletOOMScoreAdj int = -999 - KubeProxyOOMScoreAdj int = -999 - guaranteedOOMScoreAdj int = -998 - besteffortOOMScoreAdj int = 1000 -) - -// GetContainerOOMAdjust returns the amount by which the OOM score of all processes in the -// container should be adjusted. -// The OOM score of a process is the percentage of memory it consumes -// multiplied by 10 (barring exceptional cases) + a configurable quantity which is between -1000 -// and 1000. Containers with higher OOM scores are killed if the system runs out of memory. -// See https://lwn.net/Articles/391222/ for more information. -func GetContainerOOMScoreAdjust(pod *api.Pod, container *api.Container, memoryCapacity int64) int { - switch GetPodQOS(pod) { - case Guaranteed: - // Guaranteed containers should be the last to get killed. - return guaranteedOOMScoreAdj - case BestEffort: - return besteffortOOMScoreAdj - } - - // Burstable containers are a middle tier, between Guaranteed and Best-Effort. Ideally, - // we want to protect Burstable containers that consume less memory than requested. - // The formula below is a heuristic. A container requesting for 10% of a system's - // memory will have an OOM score adjust of 900. If a process in container Y - // uses over 10% of memory, its OOM score will be 1000. The idea is that containers - // which use more than their request will have an OOM score of 1000 and will be prime - // targets for OOM kills. - // Note that this is a heuristic, it won't work if a container has many small processes. - memoryRequest := container.Resources.Requests.Memory().Value() - oomScoreAdjust := 1000 - (1000*memoryRequest)/memoryCapacity - // A guaranteed pod using 100% of memory can have an OOM score of 1. Ensure - // that burstable pods have a higher OOM score adjustment. - if oomScoreAdjust < 2 { - return 2 - } - // Give burstable pods a higher chance of survival over besteffort pods. - if int(oomScoreAdjust) == besteffortOOMScoreAdj { - return int(oomScoreAdjust - 1) - } - return int(oomScoreAdjust) -} |