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Compare TODO: Remove benchmark
(version: 0)
Comparing performance of:
Int16Array vs Plain JS array
Created:
4 years ago
by:
Guest
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Script Preparation code:
var int16 = new Int16Array(100000); var regular = []; for(var i=0;i<100;i++){ int16[i] = i; regular.push(i); }
Tests:
Int16Array
var sum = 0; for(var i=0;i<100000;i++){ sum = sum + int16[i]; }
Plain JS array
var sum = 0; for(var i=0;i<100;i++){ sum = sum + regular[i]; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Int16Array
Plain JS array
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation. **Benchmark Overview** The provided JSON represents two test cases, each comparing different approaches to perform an addition operation: one using `Int16Array` and another using a plain JavaScript array. **Options Compared** The two options being compared are: 1. **Int16Array**: A typed array that provides a fixed-size buffer for storing integer data. It's designed to be more memory-efficient than regular arrays, especially when dealing with large integers. 2. **Plain JS Array**: A regular array that can store any type of value, including numbers. **Pros and Cons** * **Int16Array**: + Pros: - Memory efficiency: `Int16Array` is designed to reduce memory allocation overhead by providing a fixed-size buffer for storing integers. - Performance: Typed arrays can be faster than regular arrays because they avoid the overhead of dynamic type checking. + Cons: - Limited data types: `Int16Array` can only store 16-bit integers, which may not be suitable for all use cases. * **Plain JS Array**: + Pros: - Flexibility: Regular arrays can store any type of value, making them more versatile. + Cons: - Memory overhead: Regular arrays require dynamic memory allocation, which can lead to slower performance and higher memory usage. **Library Used** There is no explicit library mentioned in the provided JSON. However, `Int16Array` is a built-in JavaScript typed array implementation that's available since ECMAScript 2015 (ES6). **Special JS Feature/Syntax** The test case doesn't explicitly use any special JavaScript features or syntax beyond what's inherent to the language itself. **Other Alternatives** If you're interested in exploring other options, here are a few alternatives: * **ArrayBuffer**: A typed array implementation that provides more control over memory allocation and data types. * **Float32Array**, `Int32Array`, etc.: Other typed arrays for storing floating-point numbers or larger integers. **Benchmark Preparation Code** The provided script preparation code is used to create two arrays, one using `Int16Array` and the other using a plain JavaScript array. Both arrays are populated with values from 0 to 99 (not 100, as mentioned in the JSON). The test name "Plain JS array" refers to the first test case, which uses a regular array for the addition operation. **Benchmark Results** The latest benchmark results show that Chrome 96 executes the plain JavaScript array addition operation at a rate of approximately 126,153 executions per second, while the `Int16Array` approach is faster with around 130,283 executions per second.
Related benchmarks:
EcmaScript6 Int16Array vs regular JS array
Shifting array elements
One big array or one per object
Array.push(x) vs array[n]=x
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