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Remove init containers from the state file once the app container started, it will release the memory allocated for the init container and can intense the density of containers on the NUMA node in cases when the memory allocated for init containers is bigger than the memory allocated for app containers. Signed-off-by: Artyom Lukianov <alukiano@redhat.com>
47 lines
1.8 KiB
Go
47 lines
1.8 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package memorymanager
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import (
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v1 "k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/kubelet/cm/memorymanager/state"
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"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
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)
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// Type defines the policy type
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type policyType string
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// Policy implements logic for pod container to a memory assignment.
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type Policy interface {
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Name() string
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Start(s state.State) error
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// Allocate call is idempotent
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Allocate(s state.State, pod *v1.Pod, container *v1.Container) error
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// RemoveContainer call is idempotent
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RemoveContainer(s state.State, podUID string, containerName string)
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// GetTopologyHints implements the topologymanager.HintProvider Interface
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// and is consulted to achieve NUMA aware resource alignment among this
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// and other resource controllers.
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GetTopologyHints(s state.State, pod *v1.Pod, container *v1.Container) map[string][]topologymanager.TopologyHint
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// GetPodTopologyHints implements the topologymanager.HintProvider Interface
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// and is consulted to achieve NUMA aware resource alignment among this
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// and other resource controllers.
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GetPodTopologyHints(s state.State, pod *v1.Pod) map[string][]topologymanager.TopologyHint
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// GetAllocatableMemory returns the amount of allocatable memory for each NUMA node
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GetAllocatableMemory(s state.State) []state.Block
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}
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