Benchmark: Try-Catch Loop - MeasureThat.net

Script Preparation code:

var endIteration = {};

Tests:

StandardLoop
for (var i = 0; i < 100; i++) { ; }
TryCatchLoop
try { for (var i = 0; i < 100; i++) { ; } } catch(e) { }
TryCatchThrowLoop
try { for (var i = 0; ; i++) { if (i >= 100) throw endIteration; } } catch(e) { if (e != endIteration) throw e; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
StandardLoop
TryCatchLoop
TryCatchThrowLoop

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and analyze the provided benchmark.

**Benchmark Definition**

The benchmark definition provides a JSON object that describes the experiment. It has three properties:

* `Name`: A human-readable name for the benchmark (Try-Catch Loop).
* `Description`: An empty string, which means there is no description provided for this benchmark.
* `Script Preparation Code` and `Html Preparation Code`: These two fields are used to prepare the script and HTML code that will be executed during the benchmark. In this case, the `Script Preparation Code` sets a variable `endIteration` to an object.

**Test Cases**

The benchmark consists of three test cases:

1. **StandardLoop**: This test case executes a standard for loop without any try-catch blocks.
2. **TryCatchLoop**: This test case executes a try-catch block around the standard for loop. The catch block simply throws the `endIteration` object if it is not equal to `e`.
3. **TryCatchThrowLoop**: This test case executes a try-catch block around a for loop that has an infinite condition (i.e., `i++` is never true). If the loop condition fails, it throws the `endIteration` object.

**Options Compared**

The three test cases compare different approaches to executing loops with try-catch blocks:

* **StandardLoop**: A standard for loop without any modifications.
* **TryCatchLoop**: A for loop wrapped in a try-catch block that simply re-throws the exception if it is not equal to `endIteration`.
* **TryCatchThrowLoop**: A for loop wrapped in a try-catch block that throws the `endIteration` object when the loop condition fails.

**Pros and Cons**

Here are some pros and cons of each approach:

* **StandardLoop**:
	+ Pros: Simple, straightforward execution.
	+ Cons: Does not take into account potential exceptions thrown by the loop body.
* **TryCatchLoop**:
	+ Pros: Handles exceptions thrown by the loop body in a simple way.
	+ Cons: Re-throws the exception if it is not equal to `endIteration`, which might be unexpected behavior for some users.
* **TryCatchThrowLoop**:
	+ Pros: Explicitly handles the case where the loop condition fails and throws an exception.
	+ Cons: Can lead to unexpected behavior if the user does not expect exceptions to be thrown in this scenario.

**Library**

There is no library mentioned in the benchmark definition. It appears that MeasureThat.net uses built-in JavaScript features to execute the test cases.

**Special JS Feature or Syntax**

The only special feature used in this benchmark is the `try`-`catch` block, which allows for exception handling in a specific way. The use of `e != endIteration` as a condition in the catch block is also noteworthy, as it suggests that MeasureThat.net is testing the behavior of exceptions when they are not what the caller expects.

**Alternatives**

If you wanted to compare these benchmark results with other approaches, you could consider using alternative languages or frameworks that have different exception handling mechanisms. For example:

* Using a language like Java or C# that has more robust exception handling mechanisms.
* Using a framework like React Native or Flutter that provides a different way of handling exceptions in JavaScript.

However, since MeasureThat.net is specifically designed for benchmarking JavaScript microbenchmarks, it's unlikely that you would find alternatives that are similar in nature.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 15 on iOS 15.5

View result in a separate tab

Test name	Executions per second
StandardLoop	21438220.0 Ops/sec
TryCatchLoop	24294166.0 Ops/sec
TryCatchThrowLoop	2747505.0 Ops/sec

Related benchmarks:

Try-Catch Loop (version: 0)

Comparing performance of: StandardLoop vs TryCatchLoop vs TryCatchThrowLoop

Created: 8 years ago by: Guest

Jump to the latest result

StandardLoop

TryCatchLoop

TryCatchThrowLoop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):