Benchmark: Date.now() vs new Date() vs performance.now() vs delta loop variants.

Script Preparation code:

const HIGHLY_RANDOM = 436934
const fatslab = new Uint8Array()

Tests:

Date.now()
Date.now()
new Date()
new Date()
performance.now()
performance.now()
Date.now() delta loop
const start = Date.now() for (let i = 0; i < HIGHLY_RANDOM; i += 1) { fatslab[i % 256] = Date.now() - start } const end = Date.now() - start
new Date.now() delta loop
const start = new Date for (let i = 0; i < HIGHLY_RANDOM; i += 1) { fatslab[i % 256] = new Date - start } const end = new Date - start
performance.now() delta loop
const start = performance.now() for (let i = 0; i < HIGHLY_RANDOM; i += 1) { fatslab[i % 256] = performance.now() - start } const end = performance.now() - start

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Date.now()
new Date()
performance.now()
Date.now() delta loop
new Date.now() delta loop
performance.now() delta loop

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.0

Browser/OS: Firefox 142 on Linux

View result in a separate tab

Date.now()

14.8M/s

new Date()

8.7M/s

performance.now()

5.5M/s

Date.now() delta loop

35/s

performance.now() delta loop

9/s

new Date.now() delta loop

8/s

View exact numbers

Test name	Executions per second
✓ Date.now()	14,839,340 Ops/sec
new Date()	8,746,447 Ops/sec
performance.now()	5,491,177 Ops/sec
Date.now() delta loop	35 Ops/sec
performance.now() delta loop	9 Ops/sec
new Date.now() delta loop	8 Ops/sec

Date.now() vs new Date() vs performance.now() vs delta loop variants. (version: 1)

Calls to core delta time measurement functionality.

Comparing performance of: `Date.now() vs new Date() vs performance.now() vs Date.now() delta loop vs new Date.now() delta loop vs performance.now() delta loop`

Created: 6 months ago by: Guest

Go to the latest result

Date.now()

new Date()

performance.now()

Date.now() delta loop

new Date.now() delta loop

performance.now() delta loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Date.now() vs new Date() vs performance.now() vs delta loop variants. (version: 1)

Calls to core delta time measurement functionality.

Comparing performance of: Date.now() vs new Date() vs performance.now() vs Date.now() delta loop vs new Date.now() delta loop vs performance.now() delta loop

Created: 6 months ago by: Guest

Go to the latest result

Date.now()

new Date()

performance.now()

Date.now() delta loop

new Date.now() delta loop

performance.now() delta loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Date.now() vs new Date() vs performance.now() vs Date.now() delta loop vs new Date.now() delta loop vs performance.now() delta loop`