Benchmark: String Split Test

Script Preparation code:

var string1 = "abc?def#ghi?jkl#mno?pqr#stu?vwx#yz";

Tests:

1
string1.split(/#|\?/)[0];
1(limit)
string1.split(/#|\?/, 1)[0]
2
string1.split(/[?#]/)[0]
2(limit)
string1.split(/[?#]/, 1)[0]
3
string1.split('#')[0].split('?')[0]
3(limit)
string1.split('#', 1)[0].split('?')[0]
3(limit-2)
string1.split('#', 1)[0].split('?', 1)[0]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
1(limit)
2
2(limit)
3
3(limit)
3(limit-2)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Browser/OS: Chrome 96 on Windows

View result in a separate tab

Test name	Executions per second
1	2602946.2 Ops/sec
1(limit)	6431831.0 Ops/sec
2	2493957.2 Ops/sec
2(limit)	6333095.0 Ops/sec
3	2783301.5 Ops/sec
3(limit)	1509648.1 Ops/sec
3(limit-2)	1477498.2 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided JSON represents a JavaScript benchmark test case created on MeasureThat.net. The test case is designed to measure the performance of the `split()` method in different scenarios.

**What is being tested?**

In this benchmark, several options are compared:

1. **Regular expressions vs. character escapes**: Two types of regular expression syntax are compared: `/#|\\?/` and `/#/`. The first one allows for more complex pattern matching, while the second one uses character escapes (`#` becomes `\#`).
2. **Limit on maximum number of splits**: The `split()` method is called with an optional limit parameter to control the maximum number of splits.
3. **Reduced number of splits**: A more specific approach using multiple `split()` calls in sequence.

**Pros and Cons of each approach:**

1. **Regular expressions vs. character escapes**:
	* Pros:
		+ More flexible pattern matching capabilities.
		+ Can be used to match complex patterns.
	* Cons:
		+ May be slower due to the complexity of regular expression evaluation.
2. **Limit on maximum number of splits**:
	* Pros:
		+ Faster execution by limiting the number of splits.
	* Cons:
		+ May not accurately represent real-world scenarios where strings can be split multiple times.
3. **Reduced number of splits**:
	* Pros:
		+ Can improve performance by reducing the number of splits.
	* Cons:
		+ May not provide a true measure of performance in all cases.

**Special JS feature: None**

There are no special JavaScript features or syntaxes being tested in this benchmark. The focus is on the `split()` method and its various options.

**Other alternatives:**

If you wanted to create similar benchmarks for other string manipulation methods, you could consider testing:

* `replace()`
* `indexOf()`
* `lastIndexOf()`
* `substr()`
* `substring()`

Keep in mind that each of these methods has its own set of options and trade-offs, so it's essential to tailor your benchmarking approach accordingly.

**Tips for creating similar benchmarks:**

1. Choose a specific problem or scenario to test.
2. Define clear goals and objectives for the benchmark.
3. Use relevant data structures and input types (e.g., strings).
4. Consider using profiling tools to identify performance bottlenecks.
5. Run multiple iterations and collect statistics to ensure accurate results.

By following these guidelines, you can create effective JavaScript benchmarks that help developers optimize their code for real-world performance scenarios.

Related benchmarks:

String Split Test (version: 0)

Comparing performance of: 1 vs 1(limit) vs 2 vs 2(limit) vs 3 vs 3(limit) vs 3(limit-2)

Created: 3 years ago by: Guest

Jump to the latest result

1

1(limit)

2

2(limit)

3

3(limit)

3(limit-2)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):