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Add basic latency metrics to scheduler. #6368
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vmarmol
merged 1 commit into
kubernetes:master
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fgrzadkowski:measure_scheduler_latency
Apr 2, 2015
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,67 @@ | ||
/* | ||
Copyright 2015 Google Inc. All rights reserved. | ||
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Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
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 | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package metrics | ||
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import ( | ||
"sync" | ||
"time" | ||
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"github.com/prometheus/client_golang/prometheus" | ||
) | ||
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const schedulerSubsystem = "scheduler" | ||
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var ( | ||
E2eSchedulingLatency = prometheus.NewSummary( | ||
prometheus.SummaryOpts{ | ||
Subsystem: schedulerSubsystem, | ||
Name: "e2e_scheduling_latency_microseconds", | ||
Help: "E2e scheduling latency (scheduling algorith + binding)", | ||
}, | ||
) | ||
SchedulingAlgorithmLatency = prometheus.NewSummary( | ||
prometheus.SummaryOpts{ | ||
Subsystem: schedulerSubsystem, | ||
Name: "scheduling_algorithm_latency_microseconds", | ||
Help: "Scheduling algorithm latency", | ||
}, | ||
) | ||
BindingLatency = prometheus.NewSummary( | ||
prometheus.SummaryOpts{ | ||
Subsystem: schedulerSubsystem, | ||
Name: "binding_latency_microseconds", | ||
Help: "Binding latency", | ||
}, | ||
) | ||
) | ||
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var registerMetrics sync.Once | ||
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// Register all metrics. | ||
func Register() { | ||
// Register the metrics. | ||
registerMetrics.Do(func() { | ||
prometheus.MustRegister(E2eSchedulingLatency) | ||
prometheus.MustRegister(SchedulingAlgorithmLatency) | ||
prometheus.MustRegister(BindingLatency) | ||
}) | ||
} | ||
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// Gets the time since the specified start in microseconds. | ||
func SinceInMicroseconds(start time.Time) float64 { | ||
return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds()) | ||
} |
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I believe this recent change has been causing a startup crash we've seen.
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Can you say something more? What crash? What message?
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I've just faced the same. The issue is:
goroutine 11 [running]:
net/http.(_ServeMux).Handle(0xc20800a8a0, 0x9e9490, 0xd, 0x7f7d12f190a0, 0xb0e7c0)
/usr/src/go/src/net/http/server.go:1557 +0x244
net/http.(_ServeMux).HandleFunc(0xc20800a8a0, 0x9e9490, 0xd, 0xb0e7c0)
/usr/src/go/src/net/http/server.go:1585 +0x6d
net/http.HandleFunc(0x9e9490, 0xd, 0xb0e7c0)
/usr/src/go/src/net/http/server.go:1597 +0x48
github.com/GoogleCloudPlatform/kubernetes/plugin/cmd/kube-scheduler/app.func·001()
/go/src/github.com/GoogleCloudPlatform/kubernetes/_output/dockerized/go/src/github.com/GoogleCloudPlatform/kubernetes/plugin/cmd/kube-scheduler/app/server.go:84 +0x58
created by github.com/GoogleCloudPlatform/kubernetes/plugin/cmd/kube-scheduler/app.(*SchedulerServer).Run
/go/src/github.com/GoogleCloudPlatform/kubernetes/_output/dockerized/go/src/github.com/GoogleCloudPlatform/kubernetes/plugin/cmd/kube-scheduler/app/server.go:90 +0x1c7
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I've filed an issue for it #6621