Benchmark: dateTest - MeasureThat.net

Tests:

new
const date = new Date() new Date()
existing
const date = new Date() new Date(date)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new
existing

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser/OS: Firefox 116 on Windows

View result in a separate tab

Test name	Executions per second
new	2966947.8 Ops/sec
existing	3903573.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and considered.

**Benchmark Definition**

The benchmark is defined by a JSON object with four properties:

* `Name`: The name of the benchmark, which is "dateTest".
* `Description`: An empty string, indicating that no description is available.
* `Script Preparation Code`: An empty string, meaning no script preparation code needs to be executed before running the benchmark.
* `Html Preparation Code`: Another empty string, implying that no HTML preparation code is required.

This suggests that the benchmark is focused on measuring the performance of JavaScript's `Date` object creation. The lack of any setup or initialization code implies that the benchmark aims to isolate the time spent creating a new `Date` instance.

**Individual Test Cases**

The benchmark consists of two test cases:

1. **new**: This test case measures the time taken to create a new `Date` object using the syntax `const date = new Date()`.
2. **existing**: This test case measures the time taken to create a new `Date` object by passing an existing `Date` object as an argument, using the syntax `const date = new Date(date)`.

**Comparison of Options**

The two test cases compare the performance of creating a new `Date` object in two ways:

* **new**: Creating a new instance directly.
* **existing**: Reusing an existing instance and passing it to the constructor.

**Pros and Cons**

Here are some pros and cons of each approach:

* **new**:
	+ Pros: Simple and straightforward, likely to be the most commonly used method.
	+ Cons: May involve more overhead due to the creation of a new object, as opposed to reusing an existing one.
* **existing**:
	+ Pros: Can potentially reduce overhead by reusing an existing instance, which may have already been created and warmed up.
	+ Cons: May require additional memory allocation or copying if the existing instance is not properly serialized.

**Library Usage**

The benchmark uses the `Date` object from JavaScript's built-in library. The `Date` class provides a convenient way to work with dates and times in JavaScript.

**Special JS Feature/Syntax**

None of the provided code snippets use any special JavaScript features or syntax beyond standard ECMAScript 2020 (ES2020) language features. However, it's worth noting that modern JavaScript environments like Node.js often have additional features and optimizations that may affect benchmark results.

**Other Alternatives**

If you wanted to explore alternative approaches or modifications to the original benchmark, some potential alternatives could include:

* Creating multiple instances with different options (e.g., `const date = new Date('UTC')`).
* Using a loop to create multiple instances and measuring the average execution time.
* Adding noise or variations to the input data (e.g., using random dates) to simulate real-world scenarios.
* Comparing performance across different JavaScript engines, interpreters, or virtual machines.

Keep in mind that modifying an existing benchmark may require careful consideration of factors like consistency, bias, and reliability.

Related benchmarks:

dateTest (version: 0)

Comparing performance of: new vs existing

Created: one year ago by: Guest

Jump to the latest result

new

existing

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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