Benchmark: sdgdsdgswUUID methods

Script Preparation code:

function generateUUID() { // Public Domain/MIT
    var d = new Date().getTime(); //Timestamp
    var d2 = (performance && performance.now && (performance.now() * 1000)) || 0; //Time in microseconds since page-load or 0 if unsupported
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = Math.random() * 16; //random number between 0 and 16
        if (d > 0) { //Use timestamp until depleted
            r = (d + r) % 16 | 0;
            d = Math.floor(d / 16);
        } else { //Use microseconds since page-load if supported
            r = (d2 + r) % 16 | 0;
            d2 = Math.floor(d2 / 16);
        }
        return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16);
    });
}


function uuidv4() {
const hexDigits = "0123456789abcdef";

    let uuid = "";

  for (let i = 0; i < 36; i++) {
    if (i === 8 || i === 13 || i === 18 || i === 23) {
      uuid += "-";
    } else if (i === 14) {
      uuid += "4";
    } else if (i === 19) {
      uuid += hexDigits[((Math.random() * 4) | 0, 1)];
    } else {
      uuid += hexDigits[((Math.random() * 16) | 0, 1)];
    }
  }

  return uuid;
}

Tests:

uuidv4
for (var i=0; i<10000; i++){ uuidv4(); }
generateUUID
for (var i=0; i<10000; i++){ generateUUID(); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
uuidv4
generateUUID

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/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
uuidv4	47.7 Ops/sec
generateUUID	16.1 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, compared, and other considerations.

**Benchmark Definition**

The benchmark definition is an object that contains two properties: `Script Preparation Code` and `Html Preparation Code`. The `Script Preparation Code` is the JavaScript code that generates a unique identifier (UUID) using either the `generateUUID()` or `uuidv4()` function. The `Html Preparation Code` is empty in this case, which means no HTML code is being prepared.

The two functions, `generateUUID()` and `uuidv4()`, are used to generate UUIDs. These functions are not built-in JavaScript functions but are implemented by the user as part of the benchmark definition.

**Options Compared**

In this benchmark, two options are compared:

1. **`generateUUID()`**: This function generates a UUID using a timestamp-based approach.
2. **`uuidv4()`**: This function generates a UUID using a hexadecimal string-based approach with random numbers.

**Pros and Cons of Each Approach**

* `generateUUID()`:
	+ Pros: Uses a simple, predictable algorithm that can be optimized for performance.
	+ Cons: May not be suitable for all use cases (e.g., security-sensitive applications), as it relies on the system's timestamp and may not be reliable across different systems.
* `uuidv4()`:
	+ Pros: More secure and unpredictable than `generateUUID()`, making it suitable for security-sensitive applications. The random numbers used in this approach ensure uniqueness even if the same UUID is generated multiple times with the same seed value.
	+ Cons: Less predictable and potentially slower than `generateUUID()` due to the use of random numbers.

**Library**

In this benchmark, no external libraries are explicitly mentioned. However, it's worth noting that both functions might rely on internal JavaScript libraries or APIs (e.g., `performance.now()` for `generateUUID()`) that provide low-level access to system resources.

**Special JS Features/Syntax**

The benchmark uses a few special JavaScript features and syntax:

* `Performance.now()`: Returns the number of milliseconds since the page was loaded.
* `Math.random()`: Generates a random number between 0 (inclusive) and 1 (exclusive).
* Template literals (`${...}`): Used to insert expressions inside string literals.

**Other Considerations**

When creating this benchmark, it's essential to consider the following:

* **Performance**: The benchmark should be designed to measure performance, so it's crucial to choose an approach that balances predictability and speed.
* **Security**: If security is a concern, using `uuidv4()` might be a better choice due to its more secure and unpredictable nature.
* **Optimization**: The benchmark can be optimized further by using caching mechanisms or minimizing the number of function calls.

**Alternative Approaches**

If you wanted to test different UUID generation approaches, some alternatives could include:

* Using a cryptographic library (e.g., Web Crypto API) for generating UUIDs with enhanced security features.
* Implementing a more advanced algorithm (e.g., UUID 5.2 or UUID 5.3) that generates UUIDs based on namespace and name parameters.
* Comparing different synchronization strategies (e.g., locking, atomic operations) when using concurrent UUID generation.

Keep in mind that these alternatives would require significant changes to the benchmark definition and might introduce new dependencies or complexity.

Related benchmarks:

sdgdsdgswUUID methods (version: 0)

Comparing performance of: uuidv4 vs generateUUID

Created: 2 years ago by: Guest

Jump to the latest result

uuidv4

generateUUID

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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