github.com/kubewharf/katalyst-core@v0.5.3/pkg/scheduler/plugins/noderesourcetopology/reserve.go (about) 1 /* 2 Copyright 2022 The Katalyst Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package noderesourcetopology 18 19 import ( 20 "context" 21 22 corev1 "k8s.io/api/core/v1" 23 "k8s.io/apimachinery/pkg/util/sets" 24 "k8s.io/klog/v2" 25 "k8s.io/kubernetes/pkg/scheduler/framework" 26 27 "github.com/kubewharf/katalyst-api/pkg/apis/node/v1alpha1" 28 "github.com/kubewharf/katalyst-core/pkg/scheduler/cache" 29 "github.com/kubewharf/katalyst-core/pkg/scheduler/util" 30 ) 31 32 func (tm *TopologyMatch) Reserve(ctx context.Context, state *framework.CycleState, pod *corev1.Pod, nodeName string) *framework.Status { 33 if tm.topologyMatchSupport(pod) { 34 podCopy := pod.DeepCopy() 35 if util.IsNumaBinding(pod) && util.IsExclusive(pod) { 36 // get node NUMA capacity 37 rt := cache.GetCache().GetNodeResourceTopology(nodeName, nil) 38 var numaCapacity *corev1.ResourceList 39 for _, topologyZone := range rt.TopologyZone { 40 if topologyZone.Type != v1alpha1.TopologyTypeSocket { 41 continue 42 } 43 for _, child := range topologyZone.Children { 44 if child.Type != v1alpha1.TopologyTypeNuma { 45 continue 46 } 47 numaCapacity = child.Resources.Capacity 48 break 49 } 50 if numaCapacity != nil { 51 break 52 } 53 } 54 if numaCapacity == nil { 55 klog.Warningf("[TopologyMatch] reserve get node %v NUMA capacity fail") 56 } else { 57 adjustExclusivePodRequest(podCopy, *numaCapacity, tm.alignedResources) 58 } 59 } 60 cache.GetCache().ReserveNodeResource(nodeName, podCopy) 61 } 62 return framework.NewStatus(framework.Success, "") 63 } 64 65 func (tm *TopologyMatch) Unreserve(ctx context.Context, state *framework.CycleState, pod *corev1.Pod, nodeName string) { 66 if tm.topologyMatchSupport(pod) { 67 cache.GetCache().UnreserveNodeResource(nodeName, pod) 68 } 69 } 70 71 func adjustExclusivePodRequest(pod *corev1.Pod, capacity corev1.ResourceList, alignedResource sets.String) { 72 NUMAFit := false 73 74 podRequests := util.GetPodEffectiveRequest(pod) 75 76 for resourceName, request := range podRequests { 77 if !alignedResource.Has(resourceName.String()) { 78 continue 79 } 80 81 quantity, ok := capacity[resourceName] 82 if !ok { 83 continue 84 } 85 86 if request.Cmp(quantity) < 0 { 87 NUMAFit = true 88 podRequests[resourceName] = quantity 89 } 90 } 91 92 if NUMAFit { 93 pod.Spec.InitContainers = []corev1.Container{} 94 pod.Spec.Containers = []corev1.Container{ 95 { 96 Name: "fake-container", 97 Resources: corev1.ResourceRequirements{ 98 Limits: podRequests, 99 Requests: podRequests, 100 }, 101 }, 102 } 103 } 104 }