Benchmark: canvasperf - MeasureThat.net

HTML Preparation code:

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

Script Preparation code:

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext("2d");

Tests:

float
ctx.beginPath(); ctx.fillStyle = '#000'; ctx.arc(70.5 + Math.random(), 70.5 + Math.random(), 6, 0, Math.PI * 2, true); ctx.fill();
int
ctx.beginPath(); ctx.fillStyle = '#000'; ctx.arc(50, 50, 6, 0, Math.PI * 2, true); ctx.fill();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
float
int

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Windows

View result in a separate tab

Test name	Executions per second
float	1343789.5 Ops/sec
int	1286373.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Overview**

The provided JSON represents a benchmark for measuring the performance of JavaScript engines in rendering graphics using the 2D context of an HTML canvas element. The benchmark consists of two individual test cases: "float" and "int", which differ in how they specify the radius of a circle to be drawn on the canvas.

**Script Preparation Code**

The script preparation code is used to initialize the JavaScript environment before running the benchmark. In this case, it sets up a canvas element with an ID of "canvas" and gets a reference to its 2D context using `document.getElementById('canvas')` and `getContext("2d")`, respectively.

**Html Preparation Code**

The HTML preparation code is used to create the HTML structure that will be rendered by the JavaScript engine. In this case, it creates an empty canvas element with a width of 400 pixels and a height of 400 pixels.

**Test Cases**

There are two individual test cases:

1. **"float"`**: This test case uses `Math.random()` to generate a random radius between 0 and 10 for the circle to be drawn on the canvas. The circle is filled with black (`#000`) using `ctx.fillStyle` and then rendered.
2. **"int"`**: This test case explicitly specifies the radius of the circle as an integer value (6) using `ctx.arc(50, 50, 6, 0, Math.PI * 2, true)`.

**Comparison of Options**

In this benchmark, two options are being compared:

* Using a random radius (`Math.random()`) vs. specifying an explicit integer radius.
* This comparison highlights the performance differences between using arbitrary-precision arithmetic (with `Math.random()`) versus fixed-precision arithmetic (with an explicit integer value).

**Pros and Cons**

Pros of using `Math.random()`:

* Allows for dynamic and unpredictable test cases, which can be useful in measuring engine performance under various conditions.
* Can provide more accurate results for engines that handle arbitrary-precision arithmetic well.

Cons of using `Math.random()`:

* May result in slower execution times due to the overhead of generating random numbers.
* May not provide a fair comparison if the engine is optimized for integer arithmetic.

Pros of specifying an explicit integer radius:

* Provides a predictable and consistent test case, which can be useful in measuring engine performance under specific conditions.
* Can result in faster execution times since the engine only needs to perform fixed-precision arithmetic.

Cons of specifying an explicit integer radius:

* May not provide accurate results if the engine is optimized for arbitrary-precision arithmetic or has issues with precision handling.

**Library and Purpose**

There are no external libraries mentioned in this benchmark. The Canvas API is used directly, which is a built-in JavaScript API for rendering 2D graphics on HTML5 canvases.

**Special JS Features or Syntax**

None of the provided test cases use special JavaScript features or syntax that require explanation.

**Other Alternatives**

MeasureThat.net provides several other alternatives for comparing JavaScript engine performance, including:

* Measuring CPU execution times using benchmarking libraries like Benchmark.js.
* Using microbenchmarks specifically designed for testing web browser performance, such as the WebPageTest benchmark suite.
* Utilizing existing benchmarking frameworks and tools, such as V8 Profiler (for Google Chrome) or SpiderMonkey Profiler (for Mozilla Firefox).

Related benchmarks:

canvasperf (version: 0)

Comparing performance of: float vs int

Created: 8 years ago by: Guest

Jump to the latest result

float

int

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):