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scheduler: Scheduler: replace system modeler with scheduler cache

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We're using the scheduler cache to do O(1) lookup for resource request
This commit is contained in:
Hongchao Deng
2016-02-20 08:25:34 -08:00
parent 649b6879d7
commit f29a1d6c5c
12 changed files with 219 additions and 433 deletions
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30
plugin/pkg/scheduler/algorithm/priorities/priorities.go
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@@ -44,19 +44,12 @@ func calculateScore(requested int64, capacity int64, node string) int {
// Calculate the resource occupancy on a node. 'node' has information about the resources on the node.
// 'pods' is a list of pods currently scheduled on the node.
func calculateResourceOccupancy(pod *api.Pod, node api.Node, pods []*api.Pod) schedulerapi.HostPriority {
totalMilliCPU := int64(0)
totalMemory := int64(0)
func calculateResourceOccupancy(pod *api.Pod, node api.Node, nodeInfo *schedulercache.NodeInfo) schedulerapi.HostPriority {
totalMilliCPU := nodeInfo.NonZeroRequest().MilliCPU
totalMemory := nodeInfo.NonZeroRequest().Memory
capacityMilliCPU := node.Status.Allocatable.Cpu().MilliValue()
capacityMemory := node.Status.Allocatable.Memory().Value()
for _, existingPod := range pods {
for _, container := range existingPod.Spec.Containers {
cpu, memory := priorityutil.GetNonzeroRequests(&container.Resources.Requests)
totalMilliCPU += cpu
totalMemory += memory
}
}
// Add the resources requested by the current pod being scheduled.
// This also helps differentiate between differently sized, but empty, nodes.
for _, container := range pod.Spec.Containers {
@@ -93,7 +86,7 @@ func LeastRequestedPriority(pod *api.Pod, nodeNameToInfo map[string]*schedulerca
list := schedulerapi.HostPriorityList{}
for _, node := range nodes.Items {
list = append(list, calculateResourceOccupancy(pod, node, nodeNameToInfo[node.Name].Pods()))
list = append(list, calculateResourceOccupancy(pod, node, nodeNameToInfo[node.Name]))
}
return list, nil
}
@@ -227,22 +220,15 @@ func BalancedResourceAllocation(pod *api.Pod, nodeNameToInfo map[string]*schedul
list := schedulerapi.HostPriorityList{}
for _, node := range nodes.Items {
list = append(list, calculateBalancedResourceAllocation(pod, node, nodeNameToInfo[node.Name].Pods()))
list = append(list, calculateBalancedResourceAllocation(pod, node, nodeNameToInfo[node.Name]))
}
return list, nil
}
func calculateBalancedResourceAllocation(pod *api.Pod, node api.Node, pods []*api.Pod) schedulerapi.HostPriority {
totalMilliCPU := int64(0)
totalMemory := int64(0)
func calculateBalancedResourceAllocation(pod *api.Pod, node api.Node, nodeInfo *schedulercache.NodeInfo) schedulerapi.HostPriority {
totalMilliCPU := nodeInfo.NonZeroRequest().MilliCPU
totalMemory := nodeInfo.NonZeroRequest().Memory
score := int(0)
for _, existingPod := range pods {
for _, container := range existingPod.Spec.Containers {
cpu, memory := priorityutil.GetNonzeroRequests(&container.Resources.Requests)
totalMilliCPU += cpu
totalMemory += memory
}
}
// Add the resources requested by the current pod being scheduled.
// This also helps differentiate between differently sized, but empty, nodes.
for _, container := range pod.Spec.Containers {