stat

Documentation

Index

• func CPUUsage(cur, prev CPUer) float64
• type CPUer
• type S
  • func New() (_ *S, err error)
  • func (s *S) String() string
  • func (s *S) Total() int
  • func (s *S) TotalCPU() int
  • func (s *S) TotalIdle() int

Functions

func CPUUsage

func CPUUsage(cur, prev CPUer) float64

CPUUsage calculates the CPU usage percentage during the period between the two given CPUusagers.

Types

type CPUer

type CPUer interface {
	// The total amount of time units spent in CPU since last boot.
	TotalCPU() int
	// The total amount of time units spent since last boot.
	Total() int
}

CPUer represents the time units spent since last boot and the ones spent in CPU tasks. This two values allows to calculate CPU usage percentages.

type S

type S struct {
	// Time spent in user mode.
	User int
	// Time spent in user mode with low priority.
	Nice int
	// Time spent in system mode.
	System int
	// Time spent in the idle task.
	Idle int
	// Time waiting for I/O to complete.
	IOWait int
	// Time servicing interrupts.
	IRQ int
	// Time servicing soft interrupts.
	SoftIRQ int
	// Stolen time (time spent in other OS when running in a virtualized
	// environment.
	Steal int
	// Time spent running virtual CPU for guest OSs under the control of
	// the kernel.
	Guest int
	// Time spent running a niced guest.
	NiceGuest int
}

S values contain the amount of time spent by the CPU in different states, measured in USER_HZ (1/100 secs in most systems).

This assumes Linux > 2.6.33.

func New

func New() (_ *S, err error)

func (*S) String

func (s *S) String() string

func (*S) Total

func (s *S) Total() int

func (*S) TotalCPU

func (s *S) TotalCPU() int

func (*S) TotalIdle

func (s *S) TotalIdle() int