ewma

Documentation

Index

• type Rate
  • func NewEWMARate(alpha float64, interval time.Duration) *Rate
  • func (r *Rate) Incr(incr int64)
  • func (r *Rate) Rate() float64
  • func (r *Rate) Tick()

Types

type Rate

type Rate struct {
	// contains filtered or unexported fields
}

Rate tracks an exponentially weighted moving average of a per-second rate.

func NewEWMARate

func NewEWMARate(alpha float64, interval time.Duration) *Rate

NewEWMARate always allocates a new ewmaRate, as this guarantees the atomically accessed int64 will be aligned on ARM. See prometheus#2666.

func (*Rate) Incr

func (r *Rate) Incr(incr int64)

Incr counts incr events.

func (*Rate) Rate

func (r *Rate) Rate() float64

Rate returns the per-second rate.

func (*Rate) Tick

func (r *Rate) Tick()

Tick assumes to be called every r.interval.