Benchmark: get x versus array[0] versus Float32Array versus Float32Array get versus Int32Array versus Int32Array extended

Script Preparation code:

class Float32ArrayExtended extends Float32Array {
  
  constructor (val) {
    super(1);
    this[0] = val;
  }

  get x () { return this[0]; }
  set x (v) { this[0] = v; }
}

class Int32ArrayExtended extends Int32Array {
  
  constructor (val) {
    super(1);
    this[0] = val;
  }

  get x () { return this[0]; }
  set x (v) { this[0] = v; }
}

const size = 10000;
const array = new Array(16).fill(1);
const arrayEF32 = new Float32ArrayExtended (16);
const arrayF32 = new Float32Array (16);
const arrayEI32 = new Int32ArrayExtended (16);
const arrayI32 = new Int32Array (16);

const obj = {
    get x() {
        return array[0];
    },

    set x(value) {
        array[0] = value;
    }
};

Tests:

array[0]
let sum = 0; for (let i = 0; i < size; i++) { array[0] = Math.random () * 1000; sum += array[0]; }
set / get
let sum = 0; for (let i = 0; i < size; i++) { obj.x = Math.random () * 1000; sum += obj.x; }
float 32
let sum = 0; for (let i = 0; i < size; i++) { arrayF32[0] = Math.random () * 1000; sum += arrayF32[0]; }
extended float 32
let sum = 0; for (let i = 0; i < size; i++) { arrayEF32.x = Math.random () * 1000; sum += arrayEF32.x; }
int 32
let sum = 0; for (let i = 0; i < size; i++) { arrayI32[0] = Math.random () * 1000; sum += arrayI32[0]; }
extended int 32
let sum = 0; for (let i = 0; i < size; i++) { arrayEI32.x = Math.random () * 1000; sum += arrayEI32.x; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array[0]
set / get
float 32
extended float 32
int 32
extended int 32

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Linux

View result in a separate tab

Test name	Executions per second
array[0]	5981.4 Ops/sec
set / get	592.7 Ops/sec
float 32	5827.6 Ops/sec
extended float 32	5998.3 Ops/sec
int 32	5953.3 Ops/sec
extended int 32	5886.8 Ops/sec

Related benchmarks:

get x versus array[0] versus Float32Array versus Float32Array get versus Int32Array versus Int32Array extended (version: 1)

Comparing performance of: array[0] vs set / get vs float 32 vs extended float 32 vs int 32 vs extended int 32

Created: one year ago by: Guest

Jump to the latest result

array[0]

set / get

float 32

extended float 32

int 32

extended int 32

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A