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Buffer construction (https://jsbench.github.io/#00c5236cfdf645df5656c3e680fd2da6) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>Buffer construction</title> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script> | |
| <script src="./suite.js"></script> | |
| </head> | |
| <body> | |
| <h1>Open the console to view the results</h1> | |
| <h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2> | |
| </body> | |
| </html> |
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| "use strict"; | |
| (function (factory) { | |
| if (typeof Benchmark !== "undefined") { | |
| factory(Benchmark); | |
| } else { | |
| factory(require("benchmark")); | |
| } | |
| })(function (Benchmark) { | |
| var suite = new Benchmark.Suite; | |
| Benchmark.prototype.setup = function () { | |
| const n = 10000; | |
| const o = []; | |
| for (let i=0;i<n;i++) { | |
| o.push({ x: i, y: i + 1, z: i + 2}); | |
| } | |
| const t = []; | |
| for (let i=0;i<n;i++) { | |
| t.push(new Float32Array([i, i + 1, i + 2])); | |
| } | |
| function P(x, y, z) { | |
| this.x = x; | |
| this.y = y; | |
| this.z = z; | |
| } | |
| const c = []; | |
| for (let i=0;i<n;i++) { | |
| c.push(new P(i, i + 1, i + 2)); | |
| } | |
| const a = []; | |
| for (let i=0;i<n;i++) { | |
| a.push([i, i + 1, i + 2]); | |
| } | |
| }; | |
| suite.add("literal object", function () { | |
| // literal object | |
| const ob = new Float32Array(n * 3); | |
| for (let i = 0; i < n; i++) { | |
| ob[i*3] = o[i].x; | |
| ob[i*3 + 1] = o[i].y; | |
| ob[i*3 + 2] = o[i].z; | |
| } | |
| }); | |
| suite.add("typed array", function () { | |
| // typed array | |
| const tb = new Float32Array(n * 3); | |
| for (let i = 0; i < n; i++) { | |
| for(let j =0; j < 3; j++) { | |
| tb[i*3 + j] = t[i][j]; | |
| } | |
| } | |
| }); | |
| suite.add("constructed object", function () { | |
| // constructed object | |
| const cb = new Float32Array(n * 3); | |
| for (let i = 0; i < n; i++) { | |
| cb[i*3] = c[i].x; | |
| cb[i*3 + 1] = c[i].y; | |
| cb[i*3 + 2] = c[i].z; | |
| } | |
| }); | |
| suite.add("regular array", function () { | |
| // regular array | |
| const ab = new Float32Array(n * 3); | |
| for (let i = 0; i < n; i++) { | |
| for(let j =0; j < 3; j++) { | |
| ab[i*3 + j] = a[i][j]; | |
| } | |
| } | |
| }); | |
| suite.on("cycle", function (evt) { | |
| console.log(" - " + evt.target); | |
| }); | |
| suite.on("complete", function (evt) { | |
| console.log(new Array(30).join("-")); | |
| var results = evt.currentTarget.sort(function (a, b) { | |
| return b.hz - a.hz; | |
| }); | |
| results.forEach(function (item) { | |
| console.log((idx + 1) + ". " + item); | |
| }); | |
| }); | |
| console.log("Buffer construction"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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