Benchmark: 123456 - MeasureThat.net

Tests:

con eval
var N = 10; function f() { eval(""); var sum = 0; for (var i = 0; i<N; ++i) { sum += i; } }
2 sin eval
var N = 10; function f() { var sum = 0; for (var i = 0; i<N; ++i) { sum += i; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
con eval
2 sin eval

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

I'll break down the benchmark definition, test cases, and results to explain what's being tested and compared.

**Benchmark Definition**

The provided JSON represents the benchmark definition, which is empty in this case. This means that no specific script or task is defined for the benchmark.

**Script Preparation Code**

Since there is no script preparation code provided, it's not possible to test any JavaScript-related features or optimizations. The benchmark only provides two individual test cases.

**Individual Test Cases**

The test cases are represented as a JSON array with two objects each:

1. "con eval"
	* This test case defines a simple function `f()` that uses the built-in `eval()` function to execute a string containing an expression.
	* The purpose of this test is to measure the performance of JavaScript's `eval()` function in different browsers.
2. "2 sin eval"
	* This test case is similar to the first one, but it also includes a trigonometric operation (`sin`) as part of the expression being evaluated by `eval()`.
	* The goal of this test is to evaluate how the performance of `eval()` changes when it needs to perform additional mathematical operations.

**Pros and Cons of Different Approaches**

In JavaScript, there are different ways to implement arithmetic expressions. Here's a brief overview:

1. **`eval()`**: This function parses and executes a string as JavaScript code. It can be slow because it involves parsing the expression, creating an abstract syntax tree (AST), and then executing the AST.
	* Pros: Easy to use, flexible, and widely supported.
	* Cons: Can be slow due to parsing and execution overhead.
2. **`Function()`**: You can create a new function object using `new Function('expression')`. This approach involves compiling the expression into an internal representation and then executing it.
	* Pros: Can be faster than `eval()` because it avoids parsing and compilation overhead.
	* Cons: More complicated to use, and compatibility issues may arise with older browsers.

In the case of "con eval" and "2 sin eval", both tests are evaluating the performance of JavaScript's `eval()` function. The addition of trigonometric operations in the second test case makes it more complex and potentially slower due to the increased computational overhead.

**Libraries and Special JS Features**

There is no specific library mentioned in the provided benchmark definition or test cases. However, some browsers may provide additional libraries or features that can impact performance. For example:

* `Web Workers`: JavaScript's Web Workers API allows you to run tasks in parallel, which can improve overall system performance.
* `Just-In-Time (JIT) compilation`: Some browsers, like V8 in Chrome and SpiderMonkey in Firefox, use JIT compilation to optimize JavaScript execution.

**Other Considerations**

When benchmarking JavaScript performance, it's essential to consider the following factors:

* **Browser**: Different browsers have varying levels of optimization, caching, and performance characteristics.
* **Device Platform**: The platform (e.g., Windows, macOS, Linux) can affect performance due to differences in hardware, operating system, and resource management.
* **Operating System**: The underlying OS can impact performance due to factors like disk access patterns, memory allocation, and multitasking.

**Alternatives**

If you're interested in benchmarking JavaScript performance or exploring alternative approaches, consider the following options:

1. **Benchmark.js**: A popular benchmarking library for Node.js that provides a simple way to write benchmarks.
2. **V8 Benchmark Suite**: A collection of benchmarks designed to measure various aspects of V8's performance.
3. **Jit-Bench**: A benchmarking framework specifically focused on measuring the performance of JavaScript Just-In-Time compilation.

Keep in mind that the specific requirements and goals of your project will determine the most suitable approach for benchmarking or optimizing JavaScript performance.

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; rv:25.0) Gecko/20100101 Firefox/25.0

Browser/OS: Firefox 25 on Windows 7

View result in a separate tab

Test name	Executions per second
con eval	1903383.1 Ops/sec
2 sin eval	2996829.8 Ops/sec

Related benchmarks:

123456 (version: 0)

Comparing performance of: con eval vs 2 sin eval

Created: 8 years ago by: Guest

Jump to the latest result

con eval

2 sin eval

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):