perftest.js

const Benchmark = require('benchmark')
const Bl = require('./bl')

Bl.prototype.oldSlice = function slice (start, end) {
  if (typeof start == 'number' && start < 0){
    start += this.length
  }
  if (typeof end == 'number' && end < 0){
    end += this.length
  }
  return this.copy(null, 0, start, end)
}

const makeArray = num => new Array(num).fill(1)

const smallBuffers = new Bl(makeArray(100).map(() => Buffer.alloc(8, 1)))
const smallBuffersLong = new Bl(makeArray(1000).map(() => Buffer.alloc(8, 1)))
const largeBuffers = new Bl(makeArray(100).map(() => Buffer.alloc(1024, 1)))
const mixedBuffers = new Bl(makeArray(100).map((val, i) => Buffer.alloc(i ** 2 % 1024, 1)))
const veryLargeBuffers = new Bl(makeArray(100).map(() => Buffer.alloc(1024 * 1024, 1)))

const notFindableSmall = Buffer.alloc(7, 0)
const notFindableMedium = Buffer.alloc(510, 0)
const notFindableLarge = Buffer.alloc(1025, 0)

const suite = new Benchmark.Suite()

// suite.add('get performance', () => {
//   smallBuffers.get(2)
// })

suite.add('oldSlice', () => {
  smallBuffers.oldSlice()
  smallBuffers.oldSlice(0, 7)
  veryLargeBuffers.oldSlice(0, 1024)
})

suite.add('slice', () => {
  smallBuffers.slice()
  smallBuffers.slice(0, 7)
  veryLargeBuffers.slice(0, 1024)
})

// suite.add('smallBuffers small search', () => {
//   smallBuffers.indexOf(notFindableSmall)
// })
// suite.add('smallBuffers medium search', () => {
//   smallBuffers.indexOf(notFindableMedium)
// })
// suite.add('smallBuffers large search', () => {
//   smallBuffers.indexOf(notFindableLarge)
// })

// suite.add('smallBuffersLong small search', () => {
//   smallBuffersLong.indexOf(notFindableSmall)
// })
// suite.add('smallBuffersLong medium search', () => {
//   smallBuffersLong.indexOf(notFindableMedium)
// })
// suite.add('smallBuffersLong large search', () => {
//   smallBuffersLong.indexOf(notFindableLarge)
// })

// suite.add('largeBuffers small search', () => {
//   largeBuffers.indexOf(notFindableSmall)
// })
// suite.add('largeBuffers medium search', () => {
//   largeBuffers.indexOf(notFindableMedium)
// })
// suite.add('largeBuffers large search', () => {
//   largeBuffers.indexOf(notFindableLarge)
// })

// suite.add('mixedBuffers small search', () => {
//   mixedBuffers.indexOf(notFindableSmall)
// })
// suite.add('mixedBuffers medium search', () => {
//   mixedBuffers.indexOf(notFindableMedium)
// })
// suite.add('mixedBuffers large search', () => {
//   mixedBuffers.indexOf(notFindableLarge)
// })

// suite.add('veryLargeBuffers small search', () => {
//   veryLargeBuffers.indexOf(notFindableSmall)
// })
// suite.add('veryLargeBuffers medium search', () => {
//   veryLargeBuffers.indexOf(notFindableMedium)
// })
// suite.add('veryLargeBuffers large search', () => {
//   veryLargeBuffers.indexOf(notFindableLarge)
// })

suite.on('cycle', function(event) {
  console.log(String(event.target));
})
.on('complete', function() {
  console.log('done');
})
.run()