Benchmark: Fast Array lookup

Script Preparation code:

var f32arr = new Float32Array(1000000);
f32arr.forEach(function (a) {
  a = 123456;
});

var doublearr = [];

for (var i = 0; i < 1000; i++) {
 doublearr[i] = [];
 for (var j = 0; j < 1000; j++) {
   doublearr[i].push(123456);
 }
}

var doublearrwithobject = [];

for (var i = 0; i < 1000; i++) {
 doublearrwithobject[i] = [];
 for (var j = 0; j < 1000; j++) {
   doublearrwithobject[i].push({ value: 123456 });
 }
}

function lookupFloat32 () {
  var x = f32arr[722500];
}

function lookupDoubleArr () {
  var y = doublearr[850][850];
}

function lookupDoubleArrWithObject () {
  var z = doublearrwithobject[850][850].value;
}

Tests:

lookupFloat32
lookupFloat32();
lookupDoubleArr
lookupDoubleArr();
lookupDoubleArrWithObject
lookupDoubleArrWithObject();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lookupFloat32
lookupDoubleArr
lookupDoubleArrWithObject

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser/OS: Chrome 53 on Mac OS X 10.11.6

View result in a separate tab

Test name	Executions per second
lookupFloat32	5461284.0 Ops/sec
lookupDoubleArr	5597455.0 Ops/sec
lookupDoubleArrWithObject	5463461.0 Ops/sec

Fast Array lookup (version: 0)

Comparing performance of: lookupFloat32 vs lookupDoubleArr vs lookupDoubleArrWithObject

Created: 7 years ago by: Guest

Jump to the latest result

lookupFloat32

lookupDoubleArr

lookupDoubleArrWithObject

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A