JavaScript how to get current CPU usage _javascript tips

The examples in this article describe how JavaScript obtains current CPU usage. Share to everyone for your reference, specific as follows:

To get the current system CPU usage, if you allow an HTA, you can use the following code to get the current CPU usage (more accurate)

SetInterval (function () {
 var locator=new activexobject ("WbemScripting.SWbemLocator");
 var service=locator. ConnectServer (".");
 var cpu=new Enumerator (service. ExecQuery ("SELECT * from Win32_Processor")). Item ();
 Document.title = CPU. Loadpercentage;
}, 1000);

If the above method is not allowed, is there a more appropriate way to make a rough estimate on the normal Web page?

The idea is to use a timer, assuming interval execution time is 500ms, when it is invoked, it is judged by the time from the start timer to this execution, if the difference between the two = = 500 is generally considered to be relatively normal, if > 500+ for different values to determine the CPU's busy state (because different machines , CPU processing capacity is not the same, so this is only a rough estimate is not completely accurate, some of the parameters of the system have a strong dependence on

function Cpusimulator () {
 var J = m,
  getnow = function () {return
   new Date (). GetTime (
 ); (function () {
  var I = document.createelement ("div"),
   s =,
   fn = function (l) {
    L = 1;
    var now = Getnow ();
    var c = 1;
    while (c < J) {
     if (now > D + c*s) {
      l++
     }
     C + +;
    }
    D = Getnow ();
    i.innerhtml = "CPU:" + l/j * + "%";
   },
   t = setinterval (FN, +),
   D = Getnow ();
   I.style.csstext = "width:80px; height:20px; Position:fixed!important; _position:absolute; top:10px; right:10px; border:1px solid #406c99; padding:2px; Color: #f00; ";
   Document.body.appendChild (I);
   fn ();
 }) ();
}

If you want to determine the more accurate, it can only be the timing of the timer and the difference between the comparison of the adjustment.

A few years ago, someone had already written such an example on ajax.com. It's easy to use, just type in the address bar of the Web page you need to monitor:

Copy Code code as follows:

JavaScript: (function (s) {s.type= ' text/javascript '; s.src= ' http://www.3site.eu/JPU/IJPU.js '; document.getElementsByTagName (' head ') [0].appendchild (s)}) (Document.createelement (' script '));

In the top right corner of the current page, there will be a small icon, which is divided into 5 levels, representing the current CPU height task status (too high to indicate CPU usage is relatively high, only a ballpark estimate, not very accurate)

Here's an online example:

Its entire IJPU code is relatively short, you can refer to:

/* (c) Andrea Giammarchi * * (
function (J, P, U) {
 var a = ' appendchild ',
  c = ' createelement ',
  e = ' Addeven Tlistener ',
  d = document,
  L = "Load",
  w = window;
 (function () {
  var i = setinterval (function (l) {
   L = 1;
   D = new date-d;
   if (D > m) l++;
   if (D > 650) l++;
   if (D >) l++;
   if (D >) l++;
   S (j = L < J--j:l);
   D = new Date
  },
   B = d.body,
   s = function () {
    i.classname = U + J
   },
   I = d[c] (' P '), 
   c = d[c] (' link '),
   d = new Date;
  C.rel = ' stylesheet ';
  C.type = ' text/css ';
  C.href = P + U + '. css ';
  S (B[a] (C), B[a] (I)); /* @cc_on setinterval (function () {i.style.top=document.body.scrolltop+ "px"},50) @*/}) (
 ) (
5, ' http:// www.3site.eu/JPU/', ' jpu ');

I hope this article will help you with JavaScript programming.