Benchmark: array vs Float64Array with floats (small array)

Script Preparation code:

var a = [...Array(500)].map(_ => Math.random());
var ta = (new Float64Array(500)).map(_ => Math.random());

Tests:

normal array reverse
a.reverse().reverse().reverse();
Float64Array reverse
ta.reverse().reverse().reverse();
normal array i/o
for (let i=1; i !== 10000; i=i+1|0) { a[i] = a[i] + 1.1 - a[i-1|0]; }
Float64Array i/o
for (let i=1; i !== 10000; i=i+1|0) { ta[i] = ta[i] + 1.1 - ta[i-1|0]; }
Swap between arrays
for (let i=0; i !== 10000; i=i+1|0) { var tmp = ta[i]; ta[i] = a[i]; a[i] = tmp; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
normal array reverse
Float64Array reverse
normal array i/o
Float64Array i/o
Swap between arrays

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 18 on iOS 18.3.1

View result in a separate tab

Float64Array reverse

2.7M/s

normal array reverse

1.1M/s

Swap between arrays

50K/s

normal array i/o

14K/s

Float64Array i/o

11K/s

View exact numbers

Test name	Executions per second
✓ Float64Array reverse	2,664,376 Ops/sec
normal array reverse	1,139,846 Ops/sec
Swap between arrays	50,433 Ops/sec
normal array i/o	13,896 Ops/sec
Float64Array i/o	10,786 Ops/sec

array vs Float64Array with floats (small array) (version: 1)

Comparing performance of: `normal array reverse vs Float64Array reverse vs normal array i/o vs Float64Array i/o vs Swap between arrays`

Created: one year ago by: Guest

Go to the latest result

normal array reverse

Float64Array reverse

normal array i/o

Float64Array i/o

Swap between arrays

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

array vs Float64Array with floats (small array) (version: 1)

Comparing performance of: normal array reverse vs Float64Array reverse vs normal array i/o vs Float64Array i/o vs Swap between arrays

Created: one year ago by: Guest

Go to the latest result

normal array reverse

Float64Array reverse

normal array i/o

Float64Array i/o

Swap between arrays

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `normal array reverse vs Float64Array reverse vs normal array i/o vs Float64Array i/o vs Swap between arrays`