Data.Metrics.Timer

A timer is basically a histogram of the duration of a type of event and a meter of the rate of its occurrence.

Documentation

data Timer m

A measure of time statistics for the duration of an event

Instances

PrimMonad m => TakeSnapshot m (Timer m)

(Functor m, PrimMonad m) => Statistics m (Timer m)

PrimMonad m => Clear m (Timer m)

PrimMonad m => Rate m (Timer m)

PrimMonad m => Count m (Timer m)

PrimMonad m => Update m (Timer m) Double

Register (Timer IO)

mkTimer :: PrimMonad m => m NominalDiffTime -> Seed -> m (Timer m)

Create a timer using a custom function for retrieving the current time.

This is mostly exposed for testing purposes: prefer using "timer" if possible.

timer :: IO (Timer IO)

Create a standard Timer with an exponentially weighted moving average and an exponentially decaying histogram

time :: Timer IO -> IO a -> IO a

Execute an action and record statistics about the duration of the event and the rate of event occurrence.

module Data.Metrics.Types