Benchmark: Class field access speed v1

Script Preparation code:

class ValueHolder {
  #value;
  get value() {return this.#value;}
  set value(v) {this.#value = v;}
}
const holder = new ValueHolder();

function getValue1(x) {
  return holder.value;
}

function getValue2(x, anyHolder=holder) {
  return anyHolder.value;
}

function getValue3(x, anyHolder=holder) {
  const propName = "value";
  return anyHolder[propName];
}

function getValue4(x, anyHolder=holder, propName="value") {
  return anyHolder[propName];
}
               
function benchmark(func) {
  let x; 
  for (let i = 0; i < 1000000; i++) {
    x = func(i);
  }
  return x;
}

Tests:

Static object, static property
benchmark(getValue1)
Dynamic object, static property
benchmark(getValue2)
Dynamic object, const property
benchmark(getValue3)
Dynamic object, dynamic property
benchmark(getValue4)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Static object, static property
Dynamic object, static property
Dynamic object, const property
Dynamic object, dynamic property

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 26 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
Static object, static property	386.4 Ops/sec
Dynamic object, static property	167.5 Ops/sec
Dynamic object, const property	168.1 Ops/sec
Dynamic object, dynamic property	160.7 Ops/sec

Class field access speed v1 (version: 1)

Comparing performance of: Static object, static property vs Dynamic object, static property vs Dynamic object, const property vs Dynamic object, dynamic property

Created: 26 days ago by: Registered User

Jump to the latest result

Static object, static property

Dynamic object, static property

Dynamic object, const property

Dynamic object, dynamic property

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A