# Class DeviceInfo#getSystemUsageInfo

DeviceInfo

- Defined in: deviceInfo.js

Class Summary
Constructor Attributes | Constructor Name and Description
--- | ---
| DeviceInfo#getSystemUsageInfo(successCallback, errorCallback, options) Gets device usage information.

## Class Detail

DeviceInfo#getSystemUsageInfo(successCallback, errorCallback, options)
Gets device usage information. Usage information includes cpu and memory status.

    // Javascript code
    function getSystemUsageInfo() {
      function successCb(cbObject) {
         console.log("cbObject : " + JSON.stringify(cbObject));
         console.log("memory.total : " + cbObject.memory.total);
         console.log("memory.free : " + cbObject.memory.free);

         for (var i in cbObject.cpus) {
            console.log("cpu.model " +  cbObject.cpus[i].model);
            console.log("cpu.times.user " +  cbObject.cpus[i].times.user);
            console.log("cpu.times.nice " +  cbObject.cpus[i].times.nice);
            console.log("cpu.times.sys " +  cbObject.cpus[i].times.sys);
            console.log("cpu.times.idle " +  cbObject.cpus[i].times.idle);
            console.log("cpu.times.irq " +  cbObject.cpus[i].times.irq);
         }
         // Do something
      }

      function failureCb(cbObject) {
         var errorCode = cbObject.errorCode;
         var errorText = cbObject.errorText;
         console.log ("Error Code [" + errorCode + "]: " + errorText);
      }

      var deviceInfo = new DeviceInfo();
      var options = {cpus : true, memory : true};
      deviceInfo.getSystemUsageInfo(successCb, failureCb, options);
    }

Parameters:
{Function} successCallback
  success callback function.
{Function} errorCallback
  failure callback function.
{Object} options

  Property | Type | Description | Required
  --- | --- | --- | ---
  cpus | Boolean | true to get CPU information, false otherwise. | optional
  memory | Boolean | true to get memory information, false otherwise. | optional

Since:
  1.2
Returns:
  {Object}

  Property | Type | Description | Available
  --- | --- | --- | ---
  cpus | Array | Array of objects containing information about each CPU/core installed: model, and times (an object containing the number of milliseconds the CPU/core spent in: user, nice, sys, idle, and irq). | optional
  memory | Object | Object containing total and free member fields. 'total' is total amount of system memory in bytes and 'free' is amount of free memory in bytes. | optional

See:
  DeviceInfo.getPlatformInfo()