Run results for: cache vs live

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_2_6 like Mac OS X) AppleWebKit/604.5.6 (KHTML, like Gecko) Mobile/15D100

Browser: Mobile Safari 11

Operating system: iOS 11.2.6

Device Platform: iPhone

Date tested: 6 years ago

Test name	Executions per second
cache	107825.2 Ops/sec
live	293499.8 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");

var cacheG = document.createElement('canvas');
var cacheD = cacheG.getContext('2d');

cacheG.width = 12;
cacheG.height = 12;

cacheD.beginPath();
cacheD.fillStyle = '#000';
cacheD.arc(6, 6, 6, 0, Math.PI * 2, true);
cacheD.fill();

Tests:

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