Benchmark: array vs int16array try catch

Script Preparation code:

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}
var a = [...Array(10000)].map(_ => Math.random(1000000));
var ta = (new Int16Array(10000)).map(_ => Math.random(1000000));

Tests:

array reverse
a.reverse();
typedArray reverse
ta.reverse();
array i/o
for (let i = 0; i < 10000; ++i) { try{ a[i] = a[i] + 1;} catch(err) {} }
typedArray i/o
for (let i = 0; i < 10000; ++i) ta[i] = ta[i] + 1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array reverse
typedArray reverse
array i/o
typedArray i/o

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 14 on iOS 14.2

View result in a separate tab

Test name	Executions per second
array reverse	128001.6 Ops/sec
typedArray reverse	333553.2 Ops/sec
array i/o	545.8 Ops/sec
typedArray i/o	553.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, compared, and other considerations.

**Benchmark Definition JSON:**
The provided JSON defines a benchmark for comparing performance between two data types:

1. **Array**: An array is an ordered collection of values. In this case, it contains 10,000 random integers generated using `Math.random(1000000)`.
2. **Int16Array**: This is a typed array that stores 16-bit signed integers (i.e., integers in the range -32768 to 32767). It's created from an empty array of length 10,000 and also populated with random values.

**Test Cases:**

There are four test cases:

1. **`a.reverse();`**: This line reverses the order of elements in the `a` array.
2. **`ta.reverse();`**: This line reverses the order of elements in the `ta` Int16Array.
3. **`for (let i = 0; i < 10000; ++i) { try{ a[i] = a[i] + 1; } catch(err) {} };`**: This loop increments each element in the `a` array by 1 using a `try-catch` block to prevent overflow errors.
4. **`for (let i = 0; i < 10000; ++i) ta[i] = ta[i] + 1;`**: This loop increments each element in the `ta` Int16Array by 1.

**Comparison:**

The benchmark is comparing the performance of the following approaches:

* Array operations:
	+ Reversing an array (`a.reverse();`)
	+ Incrementing each element in the array using a `try-catch` block
* Typed Array operations:
	+ Reversing an Int16Array (`ta.reverse();`)
	+ Incrementing each element in the Int16Array

**Pros and Cons:**

1. **Array Operations:**
	* Pros: Arrays are widely supported and easy to work with.
	* Cons: Arrays can be slow for large datasets due to the overhead of dynamic memory allocation and garbage collection.
2. **Typed Array Operations:**
	* Pros:
		+ Typed arrays provide better performance than regular arrays, especially when working with numerical data.
		+ They avoid the overhead of dynamic memory allocation and garbage collection.
	* Cons:
		+ Typed arrays are less flexible than regular arrays and can only store a specific type of data (e.g., integers).
		+ They may require additional setup and manual management.

**Libraries:**

None mentioned in this benchmark definition, but it's worth noting that some libraries like `lodash` or `underscore` might be used to simplify array operations.

**Special JS Features/Syntax:**

* No special JavaScript features or syntax are used in this benchmark. It only uses standard JavaScript features and syntax.

**Other Alternatives:**

If you want to explore alternative approaches, consider the following:

* Using `Buffer` for typed arrays instead of `Int16Array`.
* Implementing your own data structures (e.g., linked lists) for array-like operations.
* Utilizing libraries like `fast-queue` or `array-cache` to optimize array performance.

Keep in mind that the choice of data structure and approach depends on the specific use case, performance requirements, and trade-offs.

Related benchmarks:

array vs int16array try catch (version: 0)

Comparing performance of: array reverse vs typedArray reverse vs array i/o vs typedArray i/o

Created: 4 years ago by: Guest

Jump to the latest result

array reverse

typedArray reverse

array i/o

typedArray i/o

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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