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1asdsadas
(version: 0)
21
Comparing performance of:
assign value vs dec vs quad
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var a;
Tests:
assign value
a = 21
dec
var b = 21
quad
21*21
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
assign value
dec
quad
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser/OS:
Firefox 115 on Windows 7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=515611" width="100%" height="500px"></iframe>
quad
1049.9M/s
dec
1024.5M/s
assign value
653.6M/s
View exact numbers
Test name
Executions per second
✓
quad
1,049,887,552 Ops/sec
dec
1,024,469,504 Ops/sec
assign value
653,644,480 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain what's being tested in the provided benchmark and discuss the different approaches, pros, and cons. **Overview** MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The benchmark you've shared consists of three test cases: 1. "assign value" 2. "dec" (short for decrement) 3. "quad" (short for quadruple) Each test case has two parts: a preparation code snippet and an execution code snippet. **Preparation Code Snippets** The preparation code snippets are used to set up the environment before executing the test cases. In this benchmark, there are two preparation code snippets: * `var a;` (test case "assign value") * `var b;` (test case "dec") These snippets declare variables that will be used in the execution code snippets. **Execution Code Snippets** The execution code snippets contain the actual JavaScript code that will be executed. In this benchmark, there are three execution code snippets: * `"a = 21"` (test case "assign value") * `"var b = 21"` (test case "dec") * `"21*21"` (test case "quad") **Approaches and Pros/Cons** The test cases compare the performance of different approaches to perform arithmetic operations. Here's a brief overview: 1. **"assign value"**: This test case assigns a value to a variable (`a = 21`). The pros are that it tests the assignment operation, which is fundamental in JavaScript. * Cons: It may not be representative of real-world scenarios where variables are not constantly reassigned. 2. **"dec"**: This test case decrements a variable (`b--` or `b = b - 1`). The pros are that it tests the decrement operation and can be useful for testing loops or increment/decrement logic. * Cons: It may not be representative of real-world scenarios where variables are not constantly decremented. 3. **"quad"**: This test case multiplies a value by itself (`21 * 21`). The pros are that it tests the multiplication operation, which is commonly used in arithmetic calculations. * Cons: It may not be representative of real-world scenarios where variable values are changed frequently. **Other Considerations** * **Variables and scope**: The test cases use variables with different scopes (global, function, or block). This can impact performance, as variables with smaller scopes tend to be faster to access. * **Arithmetic operations**: The test cases focus on basic arithmetic operations. More complex calculations, like nested loops or recursive functions, are not tested in this benchmark. **Libraries and Special JS Features** There is no library used in this benchmark. However, the use of `var` keyword for variable declaration might be a common practice, but modern JavaScript often prefers `let` and `const` keywords for variable declarations. No special JavaScript features are mentioned in the benchmark. **Alternatives** If you want to create your own benchmark, consider using frameworks like Benchmark.js or js-benchmark. These libraries provide more advanced features and tools for creating microbenchmarks. Alternatively, you can use a testing framework like Jest or Mocha, which support benchmarking capabilities out of the box. I hope this explanation helps you understand what's being tested in the provided benchmark!
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