benchmarks/choose-worker.js

   1 const Benchmark = require('benchmark')
   2
   3 const suite = new Benchmark.Suite()
   4
   5 const LIST_FORMATTER = new Intl.ListFormat('en-US', {
   6   style: 'long',
   7   type: 'conjunction'
   8 })
   9
  10 const workers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  11
  12 let nextWorkerIndex = 0
  13
  14 function chooseWorkerTernary () {
  15   nextWorkerIndex =
  16     workers.length - 1 === nextWorkerIndex ? 0 : nextWorkerIndex + 1
  17   return workers[nextWorkerIndex]
  18 }
  19
  20 function chooseWorkerIncrementModuloWithPreChoosing () {
  21   const chosenWorker = workers[nextWorkerIndex]
  22   nextWorkerIndex =
  23     workers.length - 1 === nextWorkerIndex ? 0 : nextWorkerIndex + 1
  24   return chosenWorker
  25 }
  26
  27 function chooseWorkerIncrementModulo () {
  28   const chosenWorker = workers[nextWorkerIndex]
  29   nextWorkerIndex++
  30   nextWorkerIndex %= workers.length
  31   return chosenWorker
  32 }
  33
  34 suite
  35   .add('Ternary', function () {
  36     nextWorkerIndex = 0
  37     chooseWorkerTernary()
  38   })
  39   .add('Increment+Modulo with PreChoosing', function () {
  40     nextWorkerIndex = 0
  41     chooseWorkerIncrementModuloWithPreChoosing()
  42   })
  43   .add('Increment+Modulo', function () {
  44     nextWorkerIndex = 0
  45     chooseWorkerIncrementModulo()
  46   })
  47   .on('cycle', function (event) {
  48     console.log(event.target.toString())
  49   })
  50   .on('complete', function () {
  51     console.log(
  52       'Fastest is ' + LIST_FORMATTER.format(this.filter('fastest').map('name'))
  53     )
  54     // eslint-disable-next-line no-process-exit
  55     process.exit()
  56   })
  57   .run()