node.js - nodejs socket.io doing nothing but connections 100% cpu -

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i'm new nodejs , socket.io, when run it reaches cpu 100% (the cpu jumping between 14-103%..) when have 800 users in site. @ first problem saw every few minutes of users disconnected , reconnect after few seconds, commented out of code ended on connect , on disconnect.. still after 5 minutes cpu reaches jumping cpu 14-100%.. don't know check since there's laterally nothing basic stuff.. node version - 0.10.25 socket.io version - 1.0 code snippet - 

var redis = require('redis').createclient(),     server = require('http').createserver(),     request = require('request'),     io = require('socket.io').listen(server),     sockets = {}; //  , memcache = require('memcache') //  , cookie = require('cookie')  // run http server on port server.listen(3000);  console.log('started node sockets.');  // allow authenticated connections - todo: check if doing anything.. :x io.set('authorization', function(handshake, callback) {   return callback(null, true);  });  io.sockets.on('connection', function(socket) {   var id = getuserid(socket);   if( id === false) return; // store user's socket   sockets[id] = socket;   console.log('user ' + id + ' connected');   request({url:"http://www.-----.co/nodeconnect", qs:{id: id}},function(){})     socket.on('disconnect', function()   {     id = getuserid(socket);     if( id === false ) return; // store user's socket     delete sockets[id];     console.log('user ' + id + ' disconnect');     request({url:"http://www.----.co/nodedisconnect", qs:{id: id}},function(){});  });  function getuserid(socket) {   if( typeof socket.handshake.headers.cookie == 'undefined' ) return false; // hotfix - check   var cookie = socket.handshake.headers.cookie;   var startat = cookie.indexof('; uid=') + 6;   var tempuid = cookie.substr(startat);   return tempuid.substr(0, tempuid.indexof(';') ); // return id. }

the server strong server 32cpu, 120gb ram. running nginx, php, nodejs, 1000 ppl.. , should check running without eating of cpu? , btw, how cpu node application should use?

the problem request in connect , disconnect, slow, , since of mass traffic cpu got occupied.


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