EvenPodsSpread: Benchmarking Priority function

This commit is contained in:
Wei Huang 2019-07-26 00:30:31 -07:00
parent 0bff4c27d6
commit 26a45b2bd3
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@ -17,6 +17,7 @@ limitations under the License.
package priorities
import (
"fmt"
"reflect"
"testing"
@ -383,6 +384,92 @@ func TestCalculateEvenPodsSpreadPriority(t *testing.T) {
}
}
func makeNodesAndPods(pod *v1.Pod, existingPodsNum, allNodesNum, filteredNodesNum int) (existingPods []*v1.Pod, allNodes []*v1.Node, filteredNodes []*v1.Node) {
var topologyKeys []string
var labels []string
// regions := 3
zones := 10
for _, c := range pod.Spec.TopologySpreadConstraints {
topologyKeys = append(topologyKeys, c.TopologyKey)
labels = append(labels, c.LabelSelector.MatchExpressions[0].Key)
}
// build nodes
for i := 0; i < allNodesNum; i++ {
nodeWrapper := st.MakeNode().Name(fmt.Sprintf("node%d", i))
for _, tpKey := range topologyKeys {
if tpKey == "zone" {
nodeWrapper = nodeWrapper.Label("zone", fmt.Sprintf("zone%d", i%zones))
} else if tpKey == "node" {
nodeWrapper = nodeWrapper.Label("node", fmt.Sprintf("node%d", i))
}
}
node := nodeWrapper.Obj()
allNodes = append(allNodes, node)
if len(filteredNodes) < filteredNodesNum {
filteredNodes = append(filteredNodes, node)
}
}
// build pods
for i := 0; i < existingPodsNum; i++ {
podWrapper := st.MakePod().Name(fmt.Sprintf("pod%d", i)).Node(fmt.Sprintf("node%d", i%allNodesNum))
// apply labels[0], labels[0,1], ..., labels[all] to each pod in turn
for _, label := range labels[:i%len(labels)+1] {
podWrapper = podWrapper.Label(label, "")
}
existingPods = append(existingPods, podWrapper.Obj())
}
return
}
func BenchmarkTestCalculateEvenPodsSpreadPriority(b *testing.B) {
tests := []struct {
name string
pod *v1.Pod
existingPodsNum int
allNodesNum int
filteredNodesNum int
}{
{
name: "1000nodes/single-constraint-zone",
pod: st.MakePod().Name("p").Label("foo", "").
SpreadConstraint(1, "zone", softSpread, st.MakeLabelSelector().Exists("foo").Obj()).
Obj(),
existingPodsNum: 10000,
allNodesNum: 1000,
filteredNodesNum: 500,
},
{
name: "1000nodes/single-constraint-node",
pod: st.MakePod().Name("p").Label("foo", "").
SpreadConstraint(1, "node", softSpread, st.MakeLabelSelector().Exists("foo").Obj()).
Obj(),
existingPodsNum: 10000,
allNodesNum: 1000,
filteredNodesNum: 500,
},
{
name: "1000nodes/two-constraints-zone-node",
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
SpreadConstraint(1, "zone", softSpread, st.MakeLabelSelector().Exists("foo").Obj()).
SpreadConstraint(1, "node", softSpread, st.MakeLabelSelector().Exists("bar").Obj()).
Obj(),
existingPodsNum: 10000,
allNodesNum: 1000,
filteredNodesNum: 500,
},
}
for _, tt := range tests {
b.Run(tt.name, func(b *testing.B) {
existingPods, allNodes, filteredNodes := makeNodesAndPods(tt.pod, tt.existingPodsNum, tt.allNodesNum, tt.filteredNodesNum)
nodeNameToInfo := schedulernodeinfo.CreateNodeNameToInfoMap(existingPods, allNodes)
b.ResetTimer()
for i := 0; i < b.N; i++ {
CalculateEvenPodsSpreadPriority(tt.pod, nodeNameToInfo, filteredNodes)
}
})
}
}
var (
hardSpread = v1.DoNotSchedule
softSpread = v1.ScheduleAnyway