MeasureThat.net

Run results for: array vs Float64Array vs Float32Array

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Mac OS X 10.15
Desktop
one year ago
Test name Executions per second
array reverse 176764.0 Ops/sec
Float64Array reverse 130540.4 Ops/sec
array i/o 91955.5 Ops/sec
Float64Array i/o 152201.5 Ops/sec
Float32Array reverse 131123.7 Ops/sec
Float32Array i/o 145013.8 Ops/sec
Script Preparation code:
AخA
 
var a = [...Array(10000)].map(_ => Math.random());
var ta = (new Float64Array(10000)).map(_ => Math.random());
var tb = (new Float32Array(10000)).map(_ => Math.random());
Tests:

  • array reverse

     
    a.reverse();

  • Float64Array reverse

     
    ta.reverse();

  • array i/o

     
    for (let i = 0; i < 10000; ++i)
      a[i] = a[i] + 1;

  • Float64Array i/o

     
    for (let i = 0; i < 10000; ++i)
      ta[i] = ta[i] + 1;

  • Float32Array reverse

     
    tb.reverse();

  • Float32Array i/o

     
    for (let i = 0; i < 10000; ++i)
      tb[i] = tb[i] + 1;