Benchmark: Testerinho - MeasureThat.net

Script Preparation code:

res = 2048;

Tests:

No if
for(let x = 0 ; x <= res*4 ; x+=res){ for (let y = 0 ; y <= res*3; y+=res){ for(let i = 0 ; i < res; i++){ for(let j = 0 ; j < res ; j++){ let a = res*i*j; let b= Math.random()*255; let c= Math.random()*255; let d= Math.random()*255; let e= 255; } } } }
If
for(let x = 0 ; x <= res*4 ; x+=res){ for (let y = 0 ; y <= res*3; y+=res){ if ( x >= res && x < 2*res || y >= res && y < 2*res) { for(let i = 0 ; i < res; i++){ for(let j = 0 ; j < res ; j++){ let a = res*i*j; let b= Math.random()*255; let c= Math.random()*255; let d= Math.random()*255; let e= 255; } } } } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
No if
If

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to measure the performance of JavaScript loops, specifically comparing two approaches:

1.  **Loop without conditional statements**: The first test case, "No if", measures the execution time of a nested loop with no conditional statements.
2.  **Loop with conditional statements**: The second test case, "If ", measures the execution time of a nested loop with conditional statements.

**Options Compared**

The benchmark compares the performance of two different approaches:

1.  **Loop without conditional statements**: This approach consists of three nested loops that iterate over a fixed range of values (res \* i \* j). The loop has no conditional statements, and all operations are executed regardless of the input values.
2.  **Loop with conditional statements**: This approach is similar to the first one but includes an if statement that filters out certain iterations based on the values of x and y.

**Pros and Cons**

**Loop without Conditional Statements:**

*   Pros:
    *   Simplifies the loop structure, reducing the complexity of the code.
    *   Can be beneficial for performance-critical loops when the number of operations is high.
*   Cons:
    *   May lead to unnecessary computations if not all iterations are valid.

**Loop with Conditional Statements:**

*   Pros:
    *   Reduces unnecessary computations by filtering out invalid iterations.
    *   Can improve performance in scenarios where only a subset of iterations are necessary.
*   Cons:
    *   Adds complexity to the loop structure, potentially increasing overhead due to conditional checks.
    *   May lead to slower performance if the number of valid iterations is small compared to the total.

**Other Considerations**

1.  **Library Usage**: The benchmark uses JavaScript's built-in `Math.random()` function to generate random numbers for the loop variables (b, c, d, and e). This is a common practice in benchmarking JavaScript code.
2.  **Device and Browser Variability**: The benchmark measures performance on different devices (Desktop) and browsers (Firefox 69), which helps to ensure the results are representative of various real-world scenarios.

**Special JS Features or Syntax**

None mentioned explicitly, but the use of template literals (`\r\n`) in the `Benchmark Definition` json suggests that the JavaScript engine being tested supports this feature.

**Alternatives**

Other alternatives for measuring loop performance could include:

1.  **Parallelized loops**: Running multiple instances of the loop concurrently to measure parallelism benefits.
2.  **Different iteration schemes**: Exploring alternative iteration strategies, such as using iterators or generators, to optimize performance.
3.  **Loops with varying workloads**: Testing loops with different input data distributions (e.g., uniform vs. skewed) to evaluate their adaptability to various real-world scenarios.

Keep in mind that the choice of benchmarking approach depends on the specific use case and the desired outcome.

Related benchmarks:

Testerinho (version: 0)

Comparing performance of: No if vs If

Created: 6 years ago by: Guest

Jump to the latest result

No if

If

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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