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add sys proc methods to metrics

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This commit is contained in:
Bradley Cicenas 2017-06-09 17:15:12 +00:00
parent c1780ae30a
commit eeac65da8c
2 changed files with 44 additions and 0 deletions
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41
metrics/proc.go Normal file
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@ -0,0 +1,41 @@
package metrics
import (
linuxproc "github.com/c9s/goprocinfo/linux"
"github.com/opencontainers/runc/libcontainer/system"
)
var sysMemTotal = getSysMemTotal()
var clockTicksPerSecond = uint64(system.GetClockTicks())
const nanoSecondsPerSecond = 1e9
func getSysMemTotal() int64 {
stat, err := linuxproc.ReadMemInfo("/proc/meminfo")
if err != nil {
log.Errorf("error reading system stats: %s", err)
return 0
}
return int64(stat.MemTotal * 1024)
}
func getSysCPUUsage() uint64 {
stat, err := linuxproc.ReadStat("/proc/stat")
if err != nil {
log.Errorf("error reading system stats: %s", err)
return 0
}
sum := stat.CPUStatAll.User +
stat.CPUStatAll.Nice +
stat.CPUStatAll.System +
stat.CPUStatAll.Idle +
stat.CPUStatAll.IOWait +
stat.CPUStatAll.IRQ +
stat.CPUStatAll.SoftIRQ +
stat.CPUStatAll.Steal +
stat.CPUStatAll.Guest +
stat.CPUStatAll.GuestNice
return (sum * nanoSecondsPerSecond) / clockTicksPerSecond
}

3
metrics/runc.go
View File

@ -91,6 +91,9 @@ func (c *Runc) ReadCPU(stats *cgroups.Stats) {
func (c *Runc) ReadMem(stats *cgroups.Stats) {
c.MemUsage = int64(stats.MemoryStats.Usage.Usage)
c.MemLimit = int64(stats.MemoryStats.Usage.Limit)
if c.MemLimit > sysMemTotal && sysMemTotal > 0 {
c.MemLimit = sysMemTotal
}
c.MemPercent = round((float64(c.MemUsage) / float64(c.MemLimit)) * 100)
}