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dataview test (https://jsbench.github.io/#bfd32d747ebaa7311c399caf9ac55a3d) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>dataview test</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 () { | |
| var loops = 100000; | |
| var size = 4*loops; | |
| var buffer = new ArrayBuffer(size); | |
| var dataview = new DataView(buffer); | |
| var int32 = new Int32Array(buffer); | |
| var uint8 = new Uint8Array(buffer); | |
| for (var i = 0; i < size; i += 8) { | |
| dataview.setFloat64(i, Math.random()); | |
| } | |
| var result = [] | |
| }; | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getInt32(i*4); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getInt32(i*4, true); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getUint32(i*4); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getUint32(i*2, true); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getInt16(i*2); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getInt16(i*2, true); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ dataview.getInt8(i); | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ int32[i]; | |
| } | |
| result.push(x); | |
| }); | |
| suite.add("var x = 0;", function () { | |
| var x = 0; | |
| for (var i = 0; i < loops; i++) { | |
| x = x ^ ((uint8[i*4] << 24) | (uint8[i*4+1] << 16) | (uint8[i*4+2] << 8) | uint8[i*4+3]); | |
| } | |
| result.push(x) | |
| }); | |
| 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("dataview test"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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