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57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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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 main
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import (
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"flag"
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"math"
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"time"
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"bitbucket.org/bertimus9/systemstat"
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)
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const sleep = time.Duration(10) * time.Millisecond
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func doSomething() {
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for i := 1; i < 10000000; i++ {
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x := float64(0)
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x += math.Sqrt(0)
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}
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}
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var (
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millicores = flag.Int("millicores", 0, "millicores number")
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durationSec = flag.Int("duration-sec", 0, "duration time in seconds")
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)
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func main() {
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flag.Parse()
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// convert millicores to percentage
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millicoresPct := float64(*millicores) / float64(10)
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duration := time.Duration(*durationSec) * time.Second
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start := time.Now()
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first := systemstat.GetProcCPUSample()
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for time.Since(start) < duration {
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cpu := systemstat.GetProcCPUAverage(first, systemstat.GetProcCPUSample(), systemstat.GetUptime().Uptime)
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if cpu.TotalPct < millicoresPct {
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doSomething()
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} else {
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time.Sleep(sleep)
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}
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}
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}
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