Guillaume Lecomte's Node.js performance test code in CoffeeScript

gistfile1.coffee

http = require 'http'
fs = require 'fs'
cluster = require 'cluster'
numCPUs = require('os').cpus().length

if cluster.isMaster
  for i in [0..numCPUs-1]
    cluster.fork()
  cluster.on 'exit', (worker, code, signal) ->
    console.log "worker #{worker.process.pid} died"
else
  server = http.createServer (request, response) ->
    file = parseInt request.url.substring(1)
    file = file % 190
    file = String("000#{file}").slice(-3)

    fs.readFile "../data/input#{file}", 'ascii', (err, data) ->
      if err?
      response.writeHead 400, {'Content-Type':'text/plain'}
        response.end()
      else
        results = data.toString().split("\r\n")
        results.sort()

        response.writeHead 200, {'Content-Type': 'text/plain'}
        response.end "input#{file}.txt\t#{results[(parseInt(results.length/2))]}"

server.listen 8080, '127.0.0.1'