Benchmark: flat typed array vs 2d typed array

Script Preparation code:

var arrDim = 1000;


var clArr = new Array(arrDim);
for (var i = 0; i < arrDim; i++) {
    clArr[i] = new Uint8Array(arrDim);
}

clArr.getSlice = function(i) {
    return this[i];
}
clArr.setVal = function(i, j, val) {
    this[i][j] = val;
}
clArr.getVal = function(i, j) {
    return this[i][j];
}


var flArr = new Uint8Array(Math.pow(arrDim, 2));

flArr.getSlice = function(i) {
    var start = i*arrDim;
    return this.slice(start, start + arrDim);
}
flArr.setVal = function(i, j, val) {
    this[i*arrDim + j] = val;
}
flArr.getVal = function(i, j) {
    return this[i*arrDim + j];
}

Tests:

flat array set
flArr.setVal(123, 123, 1);
2d array set
clArr.setVal(123, 123, 1);
flat array get
flArr.getVal(123, 123);
2d array get
clArr.getVal(123, 123);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
flat array set
2d array set
flat array get
2d array get

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
flat array set	260144480.0 Ops/sec
2d array set	239926224.0 Ops/sec
flat array get	274478304.0 Ops/sec
2d array get	241388304.0 Ops/sec

Related benchmarks:

flat typed array vs 2d typed array (version: 1)

Comparing performance of: flat array set vs 2d array set vs flat array get vs 2d array get

Created: one year ago by: Guest

Jump to the latest result

flat array set

2d array set

flat array get

2d array get

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A