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bench-ws.js
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bench-ws.js
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#!/bin/sh
":" //# comment; exec /usr/bin/env node --experimental-worker "$0" "$@"
const os = require('os')
const { Worker, isMainThread, threadId, parentPort } = require('worker_threads')
function parseArgs(options) {
const args = process.argv.slice(2)
const constRequired = options.filter(x => !x.short && x.required)
const tagged = options.filter(x => x.short)
const allRequired = options.filter(x => x.required)
let argData = {}
let arg
while (arg = args.shift()) {
let argObj = null
if (arg === '-h' || arg === '--help') {
console.log(`Usage: ${process.argv[1]} [options] ${constRequired.map(x => `<${x.name}>`).join(' ')}`)
console.log('\nOptions:')
const maxLen = tagged.reduce((max, item) => Math.max(max, item.name.length + item.short.length + 12), 10)
tagged.forEach(item => {
const prepend = (item.required ? '(required' + (item.default !== undefined ? `, default=${item.default}` : '') + ') ' : '')
if (item.type === Boolean) {
console.log(' %s: %s', (`--${item.name}, -${item.short}`).padEnd(maxLen), prepend + item.description)
} else if (item.type === Number) {
console.log(' %s: %s', (`--${item.name}, -${item.short} <num>`).padEnd(maxLen), prepend + item.description)
} else if (item.type === String) {
console.log(' %s: %s', (`--${item.name}, -${item.short} <str>`).padEnd(maxLen), prepend + item.description)
}
})
console.log(' %s: %s', (`--help, -h`).padEnd(maxLen), 'This message.')
process.exit(0)
}
if (arg.startsWith('--')) {
argObj = tagged.find(x => x.name === arg.slice(2))
} else if (arg.startsWith('-')) {
argObj = tagged.find(x => x.short === arg.slice(1))
} else {
argObj = constRequired.shift()
}
if (!argObj) {
throw new Error(`Unknown options (${arg})`)
} else {
if (argObj.type === Boolean) {
argData[argObj.name] = true
} else if (argObj.type === Number) {
const argVal = arg.startsWith('-') ? args.shift() : arg
if (isNaN(argVal)) {
throw new Error(`Is not number (${argVal})`)
} else {
if (argObj.min && argObj.min > Number(argVal)) {
throw new Error(`Min is ${argObj.min}`)
} else if (argObj.max && argObj.max < Number(argVal)) {
throw new Error(`Max is ${argObj.max}`)
}
argData[argObj.name] = Number(argVal)
}
} else if (argObj.type === String) {
const argVal = arg.startsWith('-') ? args.shift() : arg
if (argObj.test) {
if (!argObj.test.test(argVal)) {
throw new Error(`String format invalid`)
}
}
argData[argObj.name] = argVal
}
}
}
allRequired.forEach(item => {
if (!argData[item.name]) {
if (!item.default) {
throw new Error(`The option ${item.name} is required.`)
} else {
argData[item.name] = item.default
}
}
})
return argData
}
RegExp.escape = (s) => s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&')
function worker(options) {
const data = '0'.repeat(options.size)
const payload = options.payload.replace('{DATA}', data)
const rampUp = Math.ceil(options['ramp-up'] / options.threads)
const messageCount = options.counts
const WS = require(options.module === 'fast-ws' ? 'fast-ws-client' : options.module)
const timeout = options.timeout
const target = options.target
const result = {
conn: {
success: [],
failed: [],
},
echo: {
success: [],
failed: [],
},
}
const clients = []
const echo_event = options.module === 'ws' ? 'message' : 'echo'
const connect_event = options.module === 'ws' ? 'open' : 'connect'
const sender = setInterval(() => {
let countDown = rampUp
while (countDown--) {
const connStart = new Date()
let client
if (options.module === 'ws') {
client = new WS(target, { handshakeTimeout: timeout })
} else if (options.module === 'socket.io-client') {
client = WS(target, { timeout, transport: ['websocket'] })
} else if (options.module === 'fast-ws') {
client = new WS(target, { handshakeTimeout: timeout, replyTimeout: timeout })
}
clients.push(client)
const send = () => {
return new Promise(async (resolve, reject) => {
if (options.module === 'ws') {
client.on(echo_event, message => {
if (message.includes(data)) {
client.removeAllListeners(echo_event)
resolve()
}
})
client.send(payload)
setTimeout(() => {
client.removeAllListeners(echo_event)
reject()
}, timeout)
} else if (options.module === 'socket.io-client') {
client.emit(echo_event, payload, message => {
if (message.includes(data)) {
resolve()
} else {
reject()
}
})
} else if (options.module === 'fast-ws') {
try {
const message = await client.emit(echo_event, payload, true)
if (message.includes(data)) {
resolve()
} else {
reject()
}
} catch {
reject()
}
}
})
}
client.on('error', error => {
options.verbose && console.log(error.toString())
result.conn.failed.push(new Date() - connStart)
})
client.on(connect_event, async () => {
result.conn.success.push(new Date() - connStart)
let countDown = messageCount
while (countDown--) {
const sendStart = new Date()
try {
await send()
result.echo.success.push(new Date() - sendStart)
} catch {
result.echo.failed.push(new Date() - sendStart)
}
}
client.close()
})
}
}, 1000)
setTimeout(() => {
clearInterval(sender)
clients.forEach(client => {
if (options.module === 'ws') {
if (client.readyState !== client.CLOSED) {
client.close()
}
} else if (options.module === 'socket.io-client') {
if (client.readyState === 'open') {
client.close()
}
} else if (options.module === 'fast-ws') {
if (client.readyState !== -1) {
client.close()
}
}
})
parentPort.postMessage(result)
}, (options.duration + 1) * 1000)
}
function sum(values) {
return values.reduce((sum, value) => sum + value, 0)
}
function min(values) {
return values.reduce((min, value) => Math.min(min, value), Infinity)
}
function max(values) {
return values.reduce((max, value) => Math.max(max, value), -Infinity)
}
function mean(values) {
return sum(values) / values.length
}
function median(values) {
if (values.length === 0) return NaN
values.sort((a,b) => a - b)
const half = Math.floor(values.length / 2)
if (values.length % 2) {
return values[half]
}
return (values[half - 1] + values[half]) / 2.0
}
function stddev(values){
const avg = mean(values)
const squareDiffs = values.map(value => {
const diff = value - avg
const sqrDiff = diff * diff
return sqrDiff
})
return Math.sqrt(mean(squareDiffs))
}
if (isMainThread) {
const args = parseArgs([
{
name: 'duration',
short: 'd',
type: Number,
required: true,
default: 10,
min: 1,
description: 'Benchmark duration (s).',
},
{
name: 'ramp-up',
short: 'r',
type: Number,
required: true,
default: 10,
min: 1,
description: 'Ramp-up period (count/s).',
},
{
name: 'counts',
short: 'c',
type: Number,
required: true,
default: 100,
min: 1,
description: 'Messages per connection.',
},
{
name: 'threads',
short: 'T',
type: Number,
default: os.cpus().length,
min: 1,
required: true,
description: 'Total number of threads to use.'
},
{
name: 'payload',
short: 'p',
type: String,
required: true,
default: '{DATA}',
description: 'Message payload.',
},
{
name: 'timeout',
short: 't',
type: Number,
required: true,
default: 1000,
min: 1,
description: 'Connection and echo timeout (ms).',
},
{
name: 'size',
short: 's',
type: Number,
required: true,
default: 1024,
description: 'Data size (bytes).',
},
{
name: 'module',
short: 'm',
type: String,
required: true,
default: 'ws',
test: /^(ws|socket\.io-client|fast-ws)$/,
description: 'WebSocket module to use.',
},
{
name: 'verbose',
short: 'v',
type: Boolean,
description: 'Verbose output connection error.',
},
{
name: 'target',
type: String,
required: true,
test: /^wss?\:\/\/([\.-\w]+)(:\d{1,5})?(\/.*)?$/
},
])
console.log(`Start ${args.threads} threads, duration ${args.duration}s`)
// create workers
const workers = Array.from(Array(args.threads).keys()).map(() => new Worker(__filename))
// start workers
const results = []
workers.forEach(worker => {
worker.postMessage(args)
worker.once('message', result => {
results.push(result)
if (results.length === args.threads) {
const merged = results.reduce((total, result) => ({
conn: {
success: total.conn.success.concat(result.conn.success),
failed: total.conn.failed.concat(result.conn.failed),
},
echo: {
success: total.echo.success.concat(result.echo.success),
failed: total.echo.failed.concat(result.echo.failed),
},
}), { conn: { success: [], failed: [] }, echo: { success: [], failed: [] } })
console.log('')
console.log('Connection Latency:')
console.log(' Max:', max(merged.conn.success), 'ms')
console.log(' Min:', min(merged.conn.success), 'ms')
console.log(' Mean:', mean(merged.conn.success), 'ms')
console.log(' Median:', median(merged.conn.success), 'ms')
console.log(' StdDev:', stddev(merged.conn.success), 'ms')
console.log('')
console.log('Echo Latency:')
console.log(' Max:', max(merged.echo.success), 'ms')
console.log(' Min:', min(merged.echo.success), 'ms')
console.log(' Mean:', mean(merged.echo.success), 'ms')
console.log(' Median:', median(merged.echo.success), 'ms')
console.log(' StdDev:', stddev(merged.echo.success), 'ms')
console.log('')
console.log('Connection/sec:', merged.conn.success.length / args.duration)
console.log('Echo/sec:', merged.echo.success.length / args.duration)
console.log('Transfer/sec:', merged.echo.success.length * (args.size - 6 + args.payload.length) / args.duration / 1024 / 1024, 'MB')
process.exit(0)
}
})
})
} else {
parentPort.once('message', options => {
worker(options)
})
}