mirror of https://github.com/k3s-io/k3s
80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 benchmark
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import (
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"testing"
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"time"
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)
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// BenchmarkScheduling100Nodes0Pods benchmarks the scheduling rate
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// when the cluster has 100 nodes and 0 scheduled pods
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func BenchmarkScheduling100Nodes0Pods(b *testing.B) {
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benchmarkScheduling(100, 0, b)
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}
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// BenchmarkScheduling100Nodes1000Pods benchmarks the scheduling rate
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// when the cluster has 100 nodes and 1000 scheduled pods
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func BenchmarkScheduling100Nodes1000Pods(b *testing.B) {
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benchmarkScheduling(100, 1000, b)
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}
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// BenchmarkScheduling1000Nodes0Pods benchmarks the scheduling rate
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// when the cluster has 1000 nodes and 0 scheduled pods
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func BenchmarkScheduling1000Nodes0Pods(b *testing.B) {
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benchmarkScheduling(1000, 0, b)
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}
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// BenchmarkScheduling1000Nodes1000Pods benchmarks the scheduling rate
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// when the cluster has 1000 nodes and 1000 scheduled pods
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func BenchmarkScheduling1000Nodes1000Pods(b *testing.B) {
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benchmarkScheduling(1000, 1000, b)
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}
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// benchmarkScheduling benchmarks scheduling rate with specific number of nodes
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// and specific number of pods already scheduled. Since an operation takes relatively
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// long time, b.N should be small: 10 - 100.
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func benchmarkScheduling(numNodes, numScheduledPods int, b *testing.B) {
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schedulerConfigFactory, finalFunc := mustSetupScheduler()
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defer finalFunc()
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c := schedulerConfigFactory.Client
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makeNodes(c, numNodes)
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makePodsFromRC(c, "rc1", numScheduledPods)
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for {
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scheduled := schedulerConfigFactory.ScheduledPodLister.Indexer.List()
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if len(scheduled) >= numScheduledPods {
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break
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}
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time.Sleep(1 * time.Second)
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}
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// start benchmark
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b.ResetTimer()
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makePodsFromRC(c, "rc2", b.N)
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for {
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// This can potentially affect performance of scheduler, since List() is done under mutex.
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// TODO: Setup watch on apiserver and wait until all pods scheduled.
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scheduled := schedulerConfigFactory.ScheduledPodLister.Indexer.List()
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if len(scheduled) >= numScheduledPods+b.N {
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break
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}
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// Note: This might introduce slight deviation in accuracy of benchmark results.
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// Since the total amount of time is relatively large, it might not be a concern.
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time.Sleep(100 * time.Millisecond)
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}
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}
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