Commit 1e0294c
benchmark: add benchmark for object properties
Adds a benchmark to compare the speed of property setting/getting in
four cases:
- Dot notation: `obj.prop = value`
- Bracket notation with string: `obj['prop'] = value`
- Bracket notation with string variable: `obj[prop] = value`
- Bracket notation with Symbol variable: `obj[sym] = value`
PR-URL: #10949
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>1 parent c1e166a commit 1e0294c
1 file changed
Lines changed: 81 additions & 0 deletions
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
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| 1 | + 'use strict'; | ||
| 2 | + | ||
| 3 | + const common = require('../common.js'); | ||
| 4 | + | ||
| 5 | + const bench = common.createBenchmark(main, { | ||
| 6 | + method: ['property', 'string', 'variable', 'symbol'], | ||
| 7 | + millions: [1000] | ||
| 8 | + }); | ||
| 9 | + | ||
| 10 | + function runProperty(n) { | ||
| 11 | + const object = {}; | ||
| 12 | + var i = 0; | ||
| 13 | + bench.start(); | ||
| 14 | + for (; i < n; i++) { | ||
| 15 | + object.p1 = 21; | ||
| 16 | + object.p2 = 21; | ||
| 17 | + object.p1 += object.p2; | ||
| 18 | + } | ||
| 19 | + bench.end(n / 1e6); | ||
| 20 | + } | ||
| 21 | + | ||
| 22 | + function runString(n) { | ||
| 23 | + const object = {}; | ||
| 24 | + var i = 0; | ||
| 25 | + bench.start(); | ||
| 26 | + for (; i < n; i++) { | ||
| 27 | + object['p1'] = 21; | ||
| 28 | + object['p2'] = 21; | ||
| 29 | + object['p1'] += object['p2']; | ||
| 30 | + } | ||
| 31 | + bench.end(n / 1e6); | ||
| 32 | + } | ||
| 33 | + | ||
| 34 | + function runVariable(n) { | ||
| 35 | + const object = {}; | ||
| 36 | + const var1 = 'p1'; | ||
| 37 | + const var2 = 'p2'; | ||
| 38 | + var i = 0; | ||
| 39 | + bench.start(); | ||
| 40 | + for (; i < n; i++) { | ||
| 41 | + object[var1] = 21; | ||
| 42 | + object[var2] = 21; | ||
| 43 | + object[var1] += object[var2]; | ||
| 44 | + } | ||
| 45 | + bench.end(n / 1e6); | ||
| 46 | + } | ||
| 47 | + | ||
| 48 | + function runSymbol(n) { | ||
| 49 | + const object = {}; | ||
| 50 | + const symbol1 = Symbol('p1'); | ||
| 51 | + const symbol2 = Symbol('p2'); | ||
| 52 | + var i = 0; | ||
| 53 | + bench.start(); | ||
| 54 | + for (; i < n; i++) { | ||
| 55 | + object[symbol1] = 21; | ||
| 56 | + object[symbol2] = 21; | ||
| 57 | + object[symbol1] += object[symbol2]; | ||
| 58 | + } | ||
| 59 | + bench.end(n / 1e6); | ||
| 60 | + } | ||
| 61 | + | ||
| 62 | + function main(conf) { | ||
| 63 | + const n = +conf.millions * 1e6; | ||
| 64 | + | ||
| 65 | + switch (conf.method) { | ||
| 66 | + case 'property': | ||
| 67 | + runProperty(n); | ||
| 68 | + break; | ||
| 69 | + case 'string': | ||
| 70 | + runString(n); | ||
| 71 | + break; | ||
| 72 | + case 'variable': | ||
| 73 | + runVariable(n); | ||
| 74 | + break; | ||
| 75 | + case 'symbol': | ||
| 76 | + runSymbol(n); | ||
| 77 | + break; | ||
| 78 | + default: | ||
| 79 | + throw new Error('Unexpected method'); | ||
| 80 | + } | ||
| 81 | + } | ||
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