cgroups

Documentation

Index

• func GetCPUSetMemoryMigrate(cgroupPath string) (bool, error)
• func GetGlobalNumaStats() (map[int]GlobalNumaStats, error)
• type BlkioDeviceBytes
• type BlkioThrottleBytes
  • func GetBlkioThrottleBytes(cgroupPath string) (BlkioThrottleBytes, error)
• type CPUAcctUsage
  • func GetCPUAcctStats(cgroupPath string) ([]CPUAcctUsage, error)
• type CgroupID
  • func NewCgroupID(root string) *CgroupID
  • func (cgid *CgroupID) Find(id uint64) (string, error)
• type GlobalNumaStats
• type HugetlbUsage
  • func GetHugetlbUsage(cgroupPath string) ([]HugetlbUsage, error)
• type MemoryUsage
  • func GetMemoryUsage(cgroupPath string) (MemoryUsage, error)
• type NumaLine
• type NumaStat
  • func GetNumaStats(cgroupPath string) (NumaStat, error)

Functions

func GetCPUSetMemoryMigrate

func GetCPUSetMemoryMigrate(cgroupPath string) (bool, error)

GetCPUSetMemoryMigrate returns boolean indicating whether memory migration is enabled.

func GetGlobalNumaStats

func GetGlobalNumaStats() (map[int]GlobalNumaStats, error)

GetGlobalNumaStats returns the global (non-cgroup) NUMA statistics per node.

Types

type BlkioDeviceBytes

type BlkioDeviceBytes struct {
	Major      int
	Minor      int
	Operations map[string]int64
}

BlkioDeviceBytes contains a single operations line of blkio.throttle.io_service_bytes_recursive file

type BlkioThrottleBytes

type BlkioThrottleBytes struct {
	DeviceBytes []*BlkioDeviceBytes
	TotalBytes  int64
}

BlkioThrottleBytes has parsed contents of blkio.throttle.io_service_bytes_recursive file

func GetBlkioThrottleBytes

func GetBlkioThrottleBytes(cgroupPath string) (BlkioThrottleBytes, error)

GetBlkioThrottleBytes returns amount of bytes transferred to/from the disk.

type CPUAcctUsage

type CPUAcctUsage struct {
	CPU    int
	User   int64
	System int64
}

CPUAcctUsage has a parsed line of cpuacct.usage_all file

func GetCPUAcctStats

func GetCPUAcctStats(cgroupPath string) ([]CPUAcctUsage, error)

GetCPUAcctStats retrieves CPU account statistics for a given cgroup.

type CgroupID

type CgroupID struct {
	sync.Mutex
	// contains filtered or unexported fields
}

CgroupID implements mapping kernel cgroup IDs to cgroupfs paths with transparent caching.

func NewCgroupID

func NewCgroupID(root string) *CgroupID

NewCgroupID creates a new CgroupID map/cache.

func (*CgroupID) Find

func (cgid *CgroupID) Find(id uint64) (string, error)

Find finds the path for the given cgroup id.

type GlobalNumaStats

type GlobalNumaStats struct {
	NumaHit       int64
	NumaMiss      int64
	NumaForeign   int64
	InterleaveHit int64
	LocalNode     int64
	OtherNode     int64
}

GlobalNumaStats has the statistics from one global NUMA nodestats file.

type HugetlbUsage

type HugetlbUsage struct {
	Size     string
	Bytes    int64
	MaxBytes int64
}

HugetlbUsage has parsed contents of huge pages usage in bytes.

func GetHugetlbUsage

func GetHugetlbUsage(cgroupPath string) ([]HugetlbUsage, error)

GetHugetlbUsage retrieves huge pages statistics for a given cgroup.

type MemoryUsage

type MemoryUsage struct {
	Bytes    int64
	MaxBytes int64
}

MemoryUsage has parsed contents of memory usage in bytes.

func GetMemoryUsage

func GetMemoryUsage(cgroupPath string) (MemoryUsage, error)

GetMemoryUsage retrieves cgroup memory usage.

type NumaLine

type NumaLine struct {
	Total int64
	Nodes map[string]int64
}

NumaLine represents one line in the NUMA statistics file.

type NumaStat

type NumaStat struct {
	Total       NumaLine
	File        NumaLine
	Anon        NumaLine
	Unevictable NumaLine

	HierarchicalTotal       NumaLine
	HierarchicalFile        NumaLine
	HierarchicalAnon        NumaLine
	HierarchicalUnevictable NumaLine
}

NumaStat has parsed contets of a NUMA statistics file.

func GetNumaStats

func GetNumaStats(cgroupPath string) (NumaStat, error)

GetNumaStats returns parsed cgroup NUMA statistics.