64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package libcontainer
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import (
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"time"
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"github.com/docker/libcontainer/cgroups"
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"github.com/docker/libcontainer/cgroups/fs"
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"github.com/docker/libcontainer/cgroups/systemd"
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"github.com/google/cadvisor/info"
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)
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// Get stats of the specified cgroup
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func GetStats(cgroup *cgroups.Cgroup, useSystemd bool) (*info.ContainerStats, error) {
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// TODO(vmarmol): Use libcontainer's Stats() in the new API when that is ready.
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// Use systemd paths if systemd is being used.
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var (
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s *cgroups.Stats
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err error
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)
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if useSystemd {
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s, err = systemd.GetStats(cgroup)
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} else {
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s, err = fs.GetStats(cgroup)
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}
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if err != nil {
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return nil, err
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}
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return toContainerStats(s), nil
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}
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// Convert libcontainer stats to info.ContainerStats.
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func toContainerStats(s *cgroups.Stats) *info.ContainerStats {
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ret := new(info.ContainerStats)
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ret.Timestamp = time.Now()
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ret.Cpu = new(info.CpuStats)
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ret.Cpu.Usage.User = s.CpuStats.CpuUsage.UsageInUsermode
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ret.Cpu.Usage.System = s.CpuStats.CpuUsage.UsageInKernelmode
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n := len(s.CpuStats.CpuUsage.PercpuUsage)
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ret.Cpu.Usage.PerCpu = make([]uint64, n)
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ret.Cpu.Usage.Total = 0
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for i := 0; i < n; i++ {
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ret.Cpu.Usage.PerCpu[i] = s.CpuStats.CpuUsage.PercpuUsage[i]
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ret.Cpu.Usage.Total += s.CpuStats.CpuUsage.PercpuUsage[i]
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}
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ret.Memory = new(info.MemoryStats)
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ret.Memory.Usage = s.MemoryStats.Usage
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if v, ok := s.MemoryStats.Stats["pgfault"]; ok {
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ret.Memory.ContainerData.Pgfault = v
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ret.Memory.HierarchicalData.Pgfault = v
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}
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if v, ok := s.MemoryStats.Stats["pgmajfault"]; ok {
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ret.Memory.ContainerData.Pgmajfault = v
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ret.Memory.HierarchicalData.Pgmajfault = v
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}
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if v, ok := s.MemoryStats.Stats["total_inactive_anon"]; ok {
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ret.Memory.WorkingSet = ret.Memory.Usage - v
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if v, ok := s.MemoryStats.Stats["total_active_file"]; ok {
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ret.Memory.WorkingSet -= v
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}
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}
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return ret
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}
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