Benchmark: Int32Array.sort vs Array.sort larger array

Script Preparation code:

nums = [];
let i = 10 ** 5;
while (--i > 0) nums.push(i);

Tests:

Int32Array.sort
new Int32Array(nums).sort();
Array.sort
nums.sort((a, b) => a - b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Int32Array.sort
Array.sort

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser/OS: Chrome 118 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Int32Array.sort	4538.8 Ops/sec
Array.sort	1089.3 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**What is being tested?**

The provided benchmark tests two approaches for sorting an array of integers:

1. `Int32Array.sort()`: This method uses the built-in JavaScript Array interface to sort the array.
2. `nums.sort((a, b) => a - b)`: This approach also uses the built-in JavaScript Array interface, but it uses a custom comparison function to compare elements.

**Options being compared**

The two options being compared are:

* Using `Int32Array` objects for sorting
* Using regular arrays (`nums`) with a custom comparison function

**Pros and Cons of each approach:**

1. **Int32Array.sort()**:
	* Pros:
		+ Can potentially be faster, since `Int32Array` is a typed array that can store 32-bit integers, which may lead to fewer allocations and better cache locality.
	* Cons:
		+ May not work as expected if the input data contains non-integer values or is too large for the `Int32Array` to handle.
2. **nums.sort((a, b) => a - b)**:
	* Pros:
		+ Works with any type of elements in the array, including strings and objects.
	* Cons:
		+ May be slower due to the overhead of the custom comparison function.

**Library usage**

The `Int32Array` class is part of the JavaScript Standard Library, which means it's a built-in feature that comes bundled with every JavaScript engine. The purpose of `Int32Array` is to provide a typed array that can store 32-bit integers.

**Special JS features or syntax**

There are no special JavaScript features or syntax used in this benchmark. Both approaches use standard JavaScript language elements and built-ins.

**Other alternatives**

If you're looking for alternative sorting algorithms, there are several options available:

* **Merge Sort**: A divide-and-conquer algorithm that splits the array into smaller chunks and sorts them recursively.
* **Quick Sort**: Another divide-and-conquer algorithm that uses a pivot element to partition the array.
* **Heapsort**: A comparison-based sorting algorithm that uses a binary heap data structure.

These algorithms may have different performance characteristics and use cases compared to `Int32Array.sort()` and `nums.sort((a, b) => a - b)`.

In summary, this benchmark compares two approaches for sorting arrays: using `Int32Array` objects or regular arrays with a custom comparison function. The choice of approach depends on the specific requirements and constraints of your use case.

Related benchmarks:

Int32Array.sort vs Array.sort larger array (version: 0)

Comparing performance of: Int32Array.sort vs Array.sort

Created: 2 years ago by: Guest

Jump to the latest result

Int32Array.sort

Array.sort

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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