Benchmark: Diff between two dates

Diff between two dates (version: 2)

Figuring out the fastest way to get the minutes between two dates

Comparing performance of: Luxon (from string) vs Luxon (from existing DateTimes) vs Raw math (from minutes) vs Raw math (from milliseconds) vs Javascript date time object (string parsing) vs Javascript date time object (already created)

Created: 2 months ago by: Registered User

Jump to the latest result

HTML Preparation code:

<script src="
https://cdn.jsdelivr.net/npm/luxon@3.5.0/build/global/luxon.min.js
"></script>

Script Preparation code:

window.ds = "2020-02-19T00:15:00+00:00";
window.jsDt = new Date(window.ds);
window.luxonDt = luxon.DateTime.fromISO(window.ds);
window.dMillis = window.luxonDt.toMillis();
window.dMins = dMillis / (1000 * 60)

window.ds2 = "2020-02-19T12:45:00+00:00";
window.jsDt2 = new Date(window.ds2);
window.luxonDt2 = luxon.DateTime.fromISO(window.ds2);
window.dMillis2 = window.luxonDt2.toMillis();
window.dMins2 = dMillis2 / (1000 * 60)


// console.log(window.dMillis2 - window.dMillis)

Tests:

Luxon (from string)
luxon.DateTime.fromISO(window.ds2).diff(luxon.DateTime.fromISO(window.ds), 'minutes').minutes
Luxon (from existing DateTimes)
window.luxonDt2.diff(window.luxonDt.diff, 'minutes').minutes
Raw math (from minutes)
window.dMins2 - window.dMins
Raw math (from milliseconds)
(window.dMillis2 - window.dMillis) / 60000
Javascript date time object (string parsing)
(new Date(window.ds2) - new Date(window.ds)) / 60000
Javascript date time object (already created)
(window.jsDt - window.jsDt2) / 60000

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Luxon (from string)
Luxon (from existing DateTimes)
Raw math (from minutes)
Raw math (from milliseconds)
Javascript date time object (string parsing)
Javascript date time object (already created)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Windows

View result in a separate tab

Test name	Executions per second
Luxon (from string)	158789.8 Ops/sec
Luxon (from existing DateTimes)	9995872.0 Ops/sec
Raw math (from minutes)	179087664.0 Ops/sec
Raw math (from milliseconds)	179620832.0 Ops/sec
Javascript date time object (string parsing)	2377015.5 Ops/sec
Javascript date time object (already created)	11673936.0 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 2 months ago):

LLMs can make mistakes. Check important info.

The benchmark titled "Diff between two dates" focuses on evaluating various methods for calculating the difference in minutes between two date strings in JavaScript. The benchmark options primarily utilize the built-in JavaScript Date object and the Luxon library, which provides a more user-friendly interface for date and time manipulation.

### Comparison of Approaches

1. **Luxon (from string)**
   - **Benchmark Definition**: `luxon.DateTime.fromISO(window.ds2).diff(luxon.DateTime.fromISO(window.ds), 'minutes').minutes`
   - **Description**: This approach uses the Luxon library to parse the date strings and calculates the difference in minutes.
   - **Pros**: 
     - High-level API that is easy to read and maintain.
     - Handles timezone and formatting issues gracefully.
   - **Cons**:
     - Slower due to overhead from the library compared to raw calculations.
   
2. **Luxon (from existing DateTimes)**
   - **Benchmark Definition**: `window.luxonDt2.diff(window.luxonDt, 'minutes').minutes`
   - **Description**: This method uses already created Luxon DateTime objects to calculate the difference in minutes.
   - **Pros**: 
     - Efficient as it avoids string parsing overhead.
   - **Cons**:
     - If DateTime objects are not initialized properly beforehand, it may lead to inaccuracies.

3. **Raw math (from minutes)**
   - **Benchmark Definition**: `window.dMins2 - window.dMins`
   - **Description**: This approach directly works with previously computed minute values.
   - **Pros**: 
     - Very fast as it operates on primitive values.
   - **Cons**:
     - Less flexible; requires prior calculations to be done correctly.

4. **Raw math (from milliseconds)**
   - **Benchmark Definition**: `(window.dMillis2 - window.dMillis) / 60000`
   - **Description**: This method calculates the difference in milliseconds first and converts to minutes.
   - **Pros**: 
     - Fast and straightforward.
   - **Cons**:
     - Still relies on prior computed millis, and may introduce the risk of overflow for very large numbers.

5. **JavaScript date time object (string parsing)**
   - **Benchmark Definition**: `(new Date(window.ds2) - new Date(window.ds)) / 60000`
   - **Description**: This approach creates new JavaScript Date objects from string inputs and calculates the difference directly.
   - **Pros**: 
     - Works well without requiring additional libraries.
   - **Cons**: 
     - JavaScript Date parsing can be error-prone and lead to unexpected results due to varying formats and time zones.

6. **JavaScript date time object (already created)**
   - **Benchmark Definition**: `(window.jsDt - window.jsDt2) / 60000`
   - **Description**: This method operates using previously created JavaScript Date objects.
   - **Pros**: 
     - Fast and efficient when working with existing instances.
   - **Cons**:
     - Similar to the raw difference from minutes, it offers less flexibility for working with uncertain formats.

### Pros/Cons Summary

- **Luxon library**: Offers great functionality and ease of use but incurs some performance overhead plus an external dependency.
- **JavaScript Date object**: Fast for arithmetic with Date objects already instantiated but can suffer from issues related to parsing and timezone handling.

### Other Considerations

- **Timezones and Formats**: While working with date manipulations, handling different timezones and date formats can significantly affect results. Luxon simplifies this process, especially for developers unfamiliar with the intricacies of JavaScript's native Date object.
- **Performance Needs**: If performance is critical, using raw arithmetic might be favored, especially when working extensively with dates in performance-sensitive applications.
- **Maintenance and Readability**: Code maintainability could be a deciding factor when choosing between Luxon and native JavaScript methods for teams, especially if those working on the codebase have varying levels of familiarity with date handling in JavaScript.

Related benchmarks:

Diff between two dates (version: 2)

Figuring out the fastest way to get the minutes between two dates

Comparing performance of: Luxon (from string) vs Luxon (from existing DateTimes) vs Raw math (from minutes) vs Raw math (from milliseconds) vs Javascript date time object (string parsing) vs Javascript date time object (already created)

Created: 2 months ago by: Registered User

Jump to the latest result

Luxon (from string)

Luxon (from existing DateTimes)

Raw math (from minutes)

Raw math (from milliseconds)

Javascript date time object (string parsing)

Javascript date time object (already created)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 2 months ago):