一些当前 Node.js 中最流行 ES6 特性的 benchmark(V8 / Chakra)

前言

项目 github 地址:https://github.com/DavidCai1993/ES6-benchmark

如果有想要增加的特性 benchmark ,欢迎更新benchmarks/ ,然后 PR 。

环境

  • CPU: Intel Core(TM) i5-2410M 2.30GHz
  • Memory: 8GB 1600 MHz DDR3
  • Node.js: 5.9.0 / Node-chakracore 6.0.0-pre5

大致结论

许多情况下: V8 ES5 >> Chakra ES6 > Chakra ES5 > V8 ES6

Chakra 下的 ES6 特性表现相对更好。

Benchmark

concat-strings.js

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V8:
template string vs use +
14,643,602 op/s » ${a}${b}
96,959,110 op/s » a + b
Chakra:
template string vs use +
35,756,501 op/s » ${a}${b}
19,995,366 op/s » a + b

for-of-for-loop.js

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V8:
for...of vs for loop
851,761 op/s » for...of
12,507,823 op/s » for loop, i < arr.length
Chakra:
for...of vs for loop
1,133,193 op/s » for...of
16,715,320 op/s » for loop, i < arr.length

merge-objects.js

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V8:
merge objects
669,921 op/s » Object.assign
23,625,182 op/s » for...in loop and assign
Chakra:
merge objects
3,102,889 op/s » Object.assign
3,744,837 op/s » for...in loop and assign

declear-class.js

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V8:
declear a class
118,864 op/s » Class
153,662 op/s » use function and prototype
Chakra:
declear a class
560,705 op/s » Class
701,991 op/s » use function and prototype

repeat-string.js

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V8:
string.repeat() vs use +
8,828,842 op/s » string.repeat()
107,824,137 op/s » use +
Chakra:
string.repeat() vs use +
13,022,259 op/s » string.repeat()
3,328,631 op/s » use +

array-like-to-array.js

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V8:
array like object to array
1,302,649 op/s » Array.from
540,458 op/s » Array.prototype.slice.call
Chakra:
array like object to array
1,864,649 op/s » Array.from
2,537,458 op/s » Array.prototype.slice.call

promise-bluebird.js

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promise vs bluebird
V8:
322,534 op/s » promise
1,763,186 op/s » bluebird
Chakra:
69,534 op/s » promise
178,186 op/s » bluebird

var-let-const.js

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V8:
var let const
134,028,614 op/s » let
129,193,000 op/s » const
431,460,321 op/s » var
Chakra:
var let const
156,028,614 op/s » let
170,193,000 op/s » const
150,460,321 op/s » var

string-start-with.js

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V8:
string starts with
9,774,987 op/s » string.startsWith(value)
74,127,611 op/s » string[0] === value
Chakra:
string starts with
26,774,987 op/s » string.startsWith(value)
47,127,611 op/s » string[0] === value

define-a-funciton-with-this.js

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V8:
define a function with inherited this
59,661,143 op/s » () =>
64,874,220 op/s » function statement
Chakra:
define a function with inherited this
69,661,143 op/s » () =>
69,874,220 op/s » function statement

parse-int.js

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V8:
global.parseInt() vs Number.parseInt()
53,940,634 op/s » Number.parseInt()
81,509,873 op/s » global.parseInt()
Chakra:
global.parseInt() vs Number.parseInt()
16,940,634 op/s » Number.parseInt()
19,509,873 op/s » global.parseInt()