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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser: Chrome 110

Operating system: Linux

Device Platform: Desktop

Date tested: one year 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:

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]

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

Conspicuous Map lookup

Conspicuous Obj lookup

Conspicuous Map lookup 2

Conspicuous Obj lookup 2

Single map

Single obj