throughput
Version:
Speed measurment
40 lines (27 loc) • 884 B
Markdown
Speed measurement
```
npm install throughput
```
``` js
const throughput = require('throughput')
const fs = require('fs')
// Let's measure how fast we can read from /dev/urandom
const speed = throughput()
const stream = fs.createReadStream('/dev/urandom')
stream.on('data', function(data) {
// Simply call speed with the amount of bytes transferred
const bytesPerSecond = speed(data.length)
console.log(bytesPerSecond+' bytes/second')
})
```
You can always get the current speed by calling `speed()`.
Per default `throughput` uses a 5 second buffer.
To change this simply pass another value to the constructor
``` js
const speed = throughput(20) // uses a 20s buffer instead
```
This is an improved version of `speedometer` by `mafintosh`, which used timeouts, which cause a lot of issues.
MIT