Benchmark: array vs int32array2

Tests:

array
const array = []; for(let i = 0; i < 100; i++){ array.push(i); }
int32array
const array = new Int32Array(100); for(let i = 0; i < 100; i++){ array[i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array
int32array

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Browser/OS: Firefox 147 on Windows

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Test name	Executions per second
array	909299.2 Ops/sec
int32array	2331773.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark.

**What is being tested?**

The benchmark tests two approaches: using an array (`const array = []`) versus using an `Int32Array` (a typed array) (`const array = new Int32Array(100)`).

**Comparison of options**

In this case, we have two main options:

1. **Using an array**: This approach creates a regular JavaScript array and pushes elements to it in a loop.
2. **Using an `Int32Array`**: This approach creates a typed array specifically designed for 32-bit integer values and assigns each element directly to the array.

**Pros and Cons of each approach**

1. **Using an array**:
	* Pros: Easy to use, no need for explicit type declarations.
	* Cons: Slower performance due to dynamic typing and potential overhead of JavaScript's dynamic memory management.
2. **Using an `Int32Array`**:
	* Pros: Faster performance, as typed arrays are optimized for fixed-size values.
	* Cons: Requires explicit type declaration and initialization with a specific size.

**Additional considerations**

In this benchmark, the test case uses no special JavaScript features or syntax beyond what is required for each approach. The `Int32Array` is used to store 32-bit integers, which are then assigned directly to the array using indexing (`array[i]`).

**Other alternatives**

In a broader context, other alternatives might include:

* Using a `Uint8Array` (an unsigned 8-bit integer array) instead of an `Int32Array`
* Using a JavaScript library or framework that provides optimized typed arrays, such as WebAssembly's typed arrays
* Using a different data structure altogether, such as a binary buffer

However, in this specific benchmark, the two approaches being compared are using an array versus using an `Int32Array`, which highlights the trade-offs between dynamic typing and explicit type declarations.

Related benchmarks:

array vs int32array2 (version: 0)

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Comparing performance of: array vs int32array

Created: 4 years ago by: Guest

Jump to the latest result

array

int32array

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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