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assign vs void
(version: 0)
Benchmark.js
Comparing performance of:
assign vs fn vs fn2 vs fn3
Created:
2 years ago
by:
Registered User
Go to the latest result
Script Preparation code:
var fn = () => { var a = 'a' } var fn2 = () => fn() var fn3 = () => fn2()
Tests:
assign
var a = 'a'
fn
fn()
fn2
fn2()
fn3
fn3()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
assign
fn
fn2
fn3
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/120.0.0.0 Safari/537.36
Browser/OS:
Chrome 120 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=489990" width="100%" height="500px"></iframe>
assign
1005.9M/s
fn
32.7M/s
fn2
16.5M/s
fn3
10.9M/s
View exact numbers
Test name
Executions per second
✓
assign
1,005,876,288 Ops/sec
fn
32,681,104 Ops/sec
fn2
16,544,503 Ops/sec
fn3
10,894,861 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll provide an explanation of the provided benchmark, its options, pros and cons, and other considerations. **Benchmark Overview** The provided benchmark measures the execution time of three different function calls: `assign`, `fn`, `fn2`, and `fn3`. The script preparation code defines a function `fn` that assigns a value to variable `a`. Two additional functions, `fn2` and `fn3`, call `fn` recursively. **Options Compared** The benchmark compares the execution time of three different approaches: 1. **Direct Assignment**: Assigning a value directly to variable `a`. 2. **Function Call with No Arguments**: Calling function `fn` without any arguments. 3. **Recursive Function Call**: Calling functions `fn2` and `fn3`, which recursively call `fn`. **Pros and Cons of Each Approach** 1. **Direct Assignment**: * Pros: Simple, no overhead from function calls or recursion. * Cons: May not accurately represent real-world scenarios where variables are assigned values through functions. 2. **Function Call with No Arguments**: * Pros: Simulates calling a function without any input parameters, which can be relevant in some cases. * Cons: May not accurately represent how functions are typically used in code. 3. **Recursive Function Call**: * Pros: More representative of real-world scenarios where functions are called recursively. * Cons: May introduce additional overhead due to recursive function calls. **Library and Special JavaScript Features** There is no explicit library mentioned in the benchmark definition or test cases. However, it's worth noting that the use of arrow functions (`=>`) and variable declarations (e.g., `var a = 'a';`) are modern JavaScript features that may affect the execution time. **Other Considerations** 1. **Warm-up Period**: The benchmark might not accurately represent real-world usage, as most browsers have a warm-up period before executing benchmarks. 2. **Garbage Collection**: The benchmark doesn't account for garbage collection, which can impact performance in some cases. 3. **System Resources**: The benchmark only measures CPU time and doesn't consider other system resources, such as memory or disk I/O. **Alternative Benchmarks** Other alternatives to this benchmark could include: 1. **A more comprehensive test suite**, covering various aspects of JavaScript execution, such as DOM manipulation, event handling, and async operations. 2. **Benchmarks with different input parameters**, simulating how functions are typically used in code. 3. **Multi-threaded or parallelized benchmarks**, measuring the performance of JavaScript in concurrent environments. In summary, this benchmark provides a basic understanding of function call overhead in JavaScript but might not accurately represent real-world scenarios. Considering additional factors and alternative approaches can provide a more comprehensive understanding of JavaScript performance.
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