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stats_posix.go
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/
stats_posix.go
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// +build !windows
package util
import (
"runtime"
docker "github.com/fsouza/go-dockerclient"
cstructs "github.com/hashicorp/nomad/client/structs"
"github.com/hashicorp/nomad/helper/stats"
)
var (
DockerMeasuredCPUStats = []string{"Throttled Periods", "Throttled Time", "Percent"}
DockerMeasuredMemStats = []string{"RSS", "Cache", "Swap", "Usage", "Max Usage"}
)
func DockerStatsToTaskResourceUsage(s *docker.Stats) *cstructs.TaskResourceUsage {
ms := &cstructs.MemoryStats{
RSS: s.MemoryStats.Stats.Rss,
Cache: s.MemoryStats.Stats.Cache,
Swap: s.MemoryStats.Stats.Swap,
Usage: s.MemoryStats.Usage,
MaxUsage: s.MemoryStats.MaxUsage,
Measured: DockerMeasuredMemStats,
}
cs := &cstructs.CpuStats{
ThrottledPeriods: s.CPUStats.ThrottlingData.ThrottledPeriods,
ThrottledTime: s.CPUStats.ThrottlingData.ThrottledTime,
Measured: DockerMeasuredCPUStats,
}
// Calculate percentage
cs.Percent = CalculateCPUPercent(
s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage,
s.CPUStats.SystemCPUUsage, s.PreCPUStats.SystemCPUUsage, runtime.NumCPU())
cs.SystemMode = CalculateCPUPercent(
s.CPUStats.CPUUsage.UsageInKernelmode, s.PreCPUStats.CPUUsage.UsageInKernelmode,
s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage, runtime.NumCPU())
cs.UserMode = CalculateCPUPercent(
s.CPUStats.CPUUsage.UsageInUsermode, s.PreCPUStats.CPUUsage.UsageInUsermode,
s.CPUStats.CPUUsage.TotalUsage, s.PreCPUStats.CPUUsage.TotalUsage, runtime.NumCPU())
cs.TotalTicks = (cs.Percent / 100) * stats.TotalTicksAvailable() / float64(runtime.NumCPU())
return &cstructs.TaskResourceUsage{
ResourceUsage: &cstructs.ResourceUsage{
MemoryStats: ms,
CpuStats: cs,
},
Timestamp: s.Read.UTC().UnixNano(),
}
}