Benchmark: Normal Func and new Func 2

Script Preparation code:

var newFunc = new Function("let r = Math.random().toString(36).substring(7).includes('x');");
var func = function () { let r = Math.random().toString(36).substring(7).includes('x'); }

Tests:

new Func
newFunc()
func
func()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new Func
func

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided JSON and explain what's being tested.

**Benchmark Definition**

The benchmark definition represents a JavaScript function that will be executed multiple times. In this case, there are two functions:

1. `newFunc`: This is a new Function constructor that creates a function at runtime with a specific behavior. It generates a random string using `Math.random().toString(36).substring(7).includes('x');` and checks if the resulting string includes the character 'x'. The intention of this function is to create a function that will always return false, as the string generated does not include 'x'.
2. `func`: This is an existing JavaScript function that is being compared with the newFunction.

**Options Compared**

The benchmark is comparing two approaches:

1. **Using the Function constructor (`newFunc`)**: This approach creates a new function at runtime using the Function constructor.
2. **Existing JavaScript function (`func`)**: This approach executes an existing JavaScript function.

**Pros and Cons of Each Approach**

* Using the Function constructor (`newFunc`):
	+ Pros:
		- Allows for fine-grained control over the generated function.
		- Can be useful for testing complex functions or behavior.
	+ Cons:
		- Performance overhead due to the creation of a new function at runtime.
		- May not accurately represent real-world scenarios where functions are reused and optimized.
* Existing JavaScript function (`func`):
	+ Pros:
		- Faster execution, as it reuses an existing function.
		- More representative of real-world scenarios, as it tests the performance of a known function.
	+ Cons:
		- Less control over the executed function.

**Library and Special JS Feature**

There is no explicit library mentioned in the benchmark definition. However, it's worth noting that the `Function` constructor is a built-in JavaScript feature.

**Other Considerations**

* The benchmark uses a random string generation to simulate a complex operation, which can help mask performance differences between the two approaches.
* The use of `includes('x')` as a check for non-zero value may not be relevant in all scenarios, as it's unlikely that this check would significantly impact performance.

**Alternatives**

If you were to create an alternative benchmark, you could consider:

1. Using a different function creation approach (e.g., using `Function.prototype.toString()` or `eval()`)
2. Comparing the execution of different JavaScript engines (e.g., V8 vs. SpiderMonkey)
3. Measuring the performance impact of specific optimization techniques or language features
4. Using a more realistic workload, such as executing multiple small functions in succession

Keep in mind that the choice of alternative benchmark would depend on your specific goals and requirements.

As for the individual test cases:

* `new Func` tests the creation of a new function using the Function constructor.
* `func` tests the execution of an existing JavaScript function.

Related benchmarks:

Normal Func and new Func 2 (version: 0)

Comparing performance of: new Func vs func

Created: 2 years ago by: Guest

Jump to the latest result

new Func

func

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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