func GetLoad1() float64 {
concreteSigar := sigar.ConcreteSigar{}
avg, err := concreteSigar.GetLoadAverage()
if err != nil {
log.Debug("Failed to get load average")
return -1
}
return avg.One
}
func GetSystemLoad() (*SystemLoad, error) {
concreteSigar := sigar.ConcreteSigar{}
avg, err := concreteSigar.GetLoadAverage()
if err != nil {
return nil, err
}
return &SystemLoad{
Load1: avg.One,
Load5: avg.Five,
Load15: avg.Fifteen,
}, nil
}
func main() {
concreteSigar := gosigar.ConcreteSigar{}
uptime := gosigar.Uptime{}
uptime.Get()
avg, err := concreteSigar.GetLoadAverage()
if err != nil {
fmt.Printf("Failed to get load average")
return
}
fmt.Fprintf(os.Stdout, " %s up %s load average: %.2f, %.2f, %.2f\n",
time.Now().Format("15:04:05"),
uptime.Format(),
avg.One, avg.Five, avg.Fifteen)
}
func GetSystemLoad() (*SystemLoad, error) {
concreteSigar := sigar.ConcreteSigar{}
avg, err := concreteSigar.GetLoadAverage()
if err != nil {
return nil, err
}
cpuList := sigar.CpuList{}
cpuList.Get()
numCore := len(cpuList.List)
return &SystemLoad{
Load1: avg.One,
Load5: avg.Five,
Load15: avg.Fifteen,
LoadNorm1: avg.One / float64(numCore),
LoadNorm5: avg.Five / float64(numCore),
LoadNorm15: avg.Fifteen / float64(numCore),
}, nil
}
package sigar_test
import (
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
sigar "github.com/elastic/gosigar"
)
var _ = Describe("ConcreteSigar", func() {
var concreteSigar *sigar.ConcreteSigar
BeforeEach(func() {
concreteSigar = &sigar.ConcreteSigar{}
})
Describe("CollectCpuStats", func() {
It("immediately makes first CPU usage available even though it's not very accurate", func() {
samplesCh, stop := concreteSigar.CollectCpuStats(500 * time.Millisecond)
firstValue := <-samplesCh
Expect(firstValue.User).To(BeNumerically(">", 0))
stop <- struct{}{}
})
It("makes CPU usage delta values available", func() {
samplesCh, stop := concreteSigar.CollectCpuStats(500 * time.Millisecond)