Benchmark: runtest - MeasureThat.net

Script Preparation code:

var obj = (new Array(100000)).fill(null).reduce((prev, newVal) => {prev[Math.random() + ''] = Math.random() + ''; return prev; }, { sausage: 'tst' });
var array = Object.keys(obj);
var set = new Set(array);

Tests:

inc
array.includes('sausage')
key
obj['sausage']
set
set.has('saudage')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
inc
key
set

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 11; PEDM00 Build/RKQ1.201105.002) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Mobile Safari/537.36

Browser/OS: Chrome Mobile 83 on Android

View result in a separate tab

Test name	Executions per second
inc	3631929.0 Ops/sec
key	3416152.0 Ops/sec
set	3313183.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, the different approaches compared, their pros and cons, and other considerations.

**Benchmark Definition JSON**

The provided benchmark definition defines a JavaScript test case with two parts:

1. **Script Preparation Code**: This section creates an array of 100,000 objects with random keys and values. The `fill()` method is used to initialize the array with null values, and then the `reduce()` method is used to create a new object (`obj`) with random keys and values.
2. **Html Preparation Code**: This section is empty (`null`), indicating that no HTML code is required for the benchmark.

**Individual Test Cases**

There are three test cases defined:

1. **Test Case 1: "inc"**
	* **Benchmark Definition:** `array.includes('sausage')`
	* **Purpose:** This test case checks how fast a browser can search for a specific value (`'sausage'`) in an array.
2. **Test Case 2: "key"**
	* **Benchmark Definition:** `obj['sausage']`
	* **Purpose:** This test case checks how fast a browser can access a property of an object using a bracket notation (`obj['sausage']`).
3. **Test Case 3: "set"**
	* **Benchmark Definition:** `set.has('saudage')`
	* **Purpose:** This test case checks how fast a browser can check if a specific value exists in a Set data structure.

**Library Used**

In the provided benchmark definition, a JavaScript built-in object `Set` is used to create a set of unique values (`var set = new Set(array);`). The `Set` data structure provides efficient membership testing operations (e.g., `has()`).

**Special JS Feature/Syntax**

None of the benchmark definitions use any special JavaScript features or syntax. They are straightforward, vanilla JavaScript code.

**Other Considerations**

The benchmark definition does not include any user input or dynamic values, which could affect the results of the test cases. The script preparation code creates a fixed array and object with random keys and values, ensuring that the test cases are deterministic.

**Alternatives**

There are several alternative approaches to creating benchmarks for JavaScript performance testing:

1. **Using existing libraries**: Consider using established benchmarking libraries like `BenchmarkJS`, `jsperf`, or `fastest`.
2. **Utilizing web workers**: Web workers can be used to run multiple benchmarks concurrently, improving overall throughput and reducing test time.
3. **Employing parallel processing**: Utilize techniques like multi-threading or concurrent execution to speed up benchmarking.

Keep in mind that the choice of approach depends on the specific requirements and goals of your benchmarking project.

Related benchmarks:

runtest (version: 0)

411

Comparing performance of: inc vs key vs set

Created: one year ago by: Guest

Jump to the latest result

inc

key

set

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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