A web3 endpoint speed evaluator: calculates average and median response time.

endpoint-speed.js

// npm i median web3
// Usage: node index.js web3Endpoint
const median = require('median')
const Web3 = require('web3')

if (process.argv.length !== 3) {
  console.log('Usage: node index.js web3Endpoint')
  process.exit(1)
}

const requests = 50
const web3Endpoint = process.argv[2]

const web3 = new Web3(web3Endpoint)

const main = async () => {
  console.log(`Testing endpoint ${web3Endpoint} with ${requests} requests\n`)

  let totalResponseTime = 0
  const responseTimeArray = []

  let averageResponseTime, responseTimeMedian
  for (let i = 0; i < 50; i++) {
    const start = Date.now()
    const blockNumber = await web3.eth.getBlockNumber()
    const end = Date.now()

    const responseTime = end - start
    totalResponseTime += responseTime
    responseTimeArray.push(responseTime)

    averageResponseTime = totalResponseTime / (i + 1)
    responseTimeMedian = median(responseTimeArray)

    console.log(`${i + 1} | Latest: ${responseTime} | Average: ${averageResponseTime} | Median: ${responseTimeMedian} | Block number: ${blockNumber}`)
  }

  console.log(`\nAfter ${requests} iterations | Average: ${averageResponseTime} | Median: ${responseTimeMedian}`)
}
main()