MeasureThat.net

Run results for: Long int keys (19 digits) (one select)

Based on https://www.measurethat.net/Benchmarks/Show/11290/4/map-vs-object-real-world-performance but with long int keys

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
Chrome 110
Linux
Desktop
2 years ago
Test name Executions per second
Conspicuous Map lookup 21.4 Ops/sec
Conspicuous Obj lookup 13.6 Ops/sec
Conspicuous Map lookup 2 22.6 Ops/sec
Conspicuous Obj lookup 2 13.8 Ops/sec
Single map 1377314.5 Ops/sec
Single obj 883642.5 Ops/sec
Script Preparation code:
​x
 
var keyCount = 65535
var keys = []
var map = new Map()
var obj = {}
​
​
// Hide lookup keys to prevent V8 cheating (AKA Optimizing)
var getConspicuousKey = seed => keys[Math.floor(seed * keyCount)]
​
​
// Setup out test objects w/ random values
for (let i=0; i<keyCount; i++) {
  let val = Math.random()
  let key = 3000000000000000000+((4000000000000000000*Math.random())|0)
  keys.push(key)
  map.set(key,val)
  obj[key] = val
}
​
Tests:

  • Conspicuous Map lookup

     
    for (let i=0; i<keyCount; i++) {
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = map.get(key)
    }

  • Conspicuous Obj lookup

     
    for (let i=0; i<keyCount; i++) {
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = obj[key]
    }

  • Conspicuous Map lookup 2

     
    for (let i=0; i<keyCount; i++) {
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = map.get(key)
    }

  • Conspicuous Obj lookup 2

     
    for (let i=0; i<keyCount; i++) {
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = obj[key]
    }

  • Single map

     
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = map.get(key)
    ​

  • Single obj

     
      let seed = Math.random()
      let key = getConspicuousKey(seed)
      a = obj[key]
    ​