Run results for: cache vs live

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36

Browser: Chrome 65

Operating system: Windows 7

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
cache	12934.2 Ops/sec
live	114300.1 Ops/sec

HTML Preparation code:

<canvas id="canvas" width="400" height="400"></canvas>

Script Preparation code:

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext("2d");

ctx.beginPath();
ctx.fillStyle = '#000';
ctx.arc(6, 6, 6, 0, Math.PI * 2, true);
ctx.fill();

var cache = ctx.getImageData(0, 0, canvas.width, canvas.height);

Tests:

cache
ctx.putImageData(cache, 0, 0);
live
ctx.beginPath(); ctx.fillStyle = '#000'; ctx.arc(12, 12, 6, 0, Math.PI * 2, true); ctx.fill();