Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Date.now() vs Performance.measure() vs Performance.now()
(version: 0)
Performance measure can be slow
Comparing performance of:
performance.mark vs Date.now vs performance.mark + performance.measure vs performance.now()
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var times = [];
Tests:
performance.mark
var i = Math.random() + '' + Date.now(); performance.mark(i + 'start'); performance.mark(i + 'end' );
Date.now
var i = Math.random() + '' + Date.now(); times.push(Date.now() + 'start' + i); times.push(Date.now() + 'end' + i);
performance.mark + performance.measure
var i = Math.random() + '' + Date.now(); performance.mark(i + 'start'); performance.mark(i + 'end' ); performance.measure(i, i + 'start', i + 'end')
performance.now()
const start = performance.now() const end = Math.floor(performance.now() - start)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
Fork
Test case name
Result
performance.mark
Date.now
performance.mark + performance.measure
performance.now()
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Overview** The provided benchmark definition and test cases are designed to measure the performance of different approaches to measure time in JavaScript. The goal is to determine which method is the most efficient and accurate. **Benchmark Definition** The benchmark definition consists of four test cases: 1. `Date.now() vs Performance.measure() vs Performance.now()`: This test case compares the performance of three methods: `Date.now()`, `Performance.measure()`, and `Performance.now()`. The goal is to determine which method is the fastest and most accurate. 2. `performance.mark`: This test case measures the performance of the `performance.mark()` function, which creates a mark that can be used to measure the time elapsed between two points in the future. **Test Cases** Each test case consists of a benchmark definition and a test name. The test name is used to identify the test results. 1. **`Date.now()`** * This test case measures the performance of `Date.now()`, which returns the number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 UTC). * Pros: Simple and widely supported. Cons: Not suitable for measuring short time intervals. 2. **`Performance.measure()`** * This test case measures the performance of `Performance.measure()`, which creates a measure that can be used to measure the time elapsed between two points in the future. * Pros: Suitable for measuring short time intervals and provides more accuracy than `Date.now()`. * Cons: May be slower than `Date.now()` due to overhead associated with creating a measure. 3. **`performance.mark()`** * This test case measures the performance of `performance.mark()`, which creates a mark that can be used to measure the time elapsed between two points in the future. * Pros: Provides more accuracy than `Date.now()` and is suitable for measuring short time intervals. * Cons: May require additional setup and may have slower performance compared to `Performance.measure()`. 4. **`performance.mark + Performance.measure()`** * This test case combines the benefits of both `performance.mark()` and `Performance.measure()`. It creates a mark using `performance.mark()` and then measures the time elapsed between two points in the future using `Performance.measure()`. * Pros: Combines the accuracy of `performance.mark()` with the efficiency of `Performance.measure()`. * Cons: May require additional setup and may have slower performance compared to a single approach. **Library:** None. **Special JS feature or syntax:** There is no special JavaScript feature or syntax used in this benchmark. The tests only utilize standard JavaScript functions such as `Date.now()` and `performance.mark()`. **Alternatives:** Other alternatives for measuring time in JavaScript include: 1. **`Web APIs (web performance metrics)`**: Web Performance Metrics provide a set of standardized APIs for measuring performance, including timing measurements. 2. **`Timeline API`**: The Timeline API provides an interface for creating and managing timelines, which can be used to measure the performance of web applications. In conclusion, this benchmark provides valuable insights into the performance characteristics of different methods for measuring time in JavaScript. By understanding these differences, developers can choose the most suitable approach for their specific use cases.
Related benchmarks:
Date.now() vs new Date().getTime() vs performance.now()
Date.now() vs performance.now()324234
Date.now() vs new Date() vs performance.now()
Date.now() vs new Date().getTime() vs performance.now() with calc
Date.now() vs. now()
Comments
Confirm delete:
Do you really want to delete benchmark?