how to get server cpu and memory and disk percentage in node.js-CodePudding

var os  = require('os-utils');
os.cpuUsage(function(v){
    console.log( 'os-utils CPU Usage (%): '   v ); 
    // os-utils CPU Usage (%): 0.11180382377389864
});
os.cpuFree(function(v){
    console.log( 'os-utils CPU Free:'   v );
    // os-utils CPU Free:0.8876135425268373
});

var osu = require('node-os-utils')
var cpu = osu.cpu
cpu.usage()
.then(info => {
    console.log('node-os-utils cpu.usage ' info)
    // node-os-utils cpu.usage 11.53
})
cpu.free()
.then(info => {
    console.log('node-os-utils cpu.free '  info)
    // node-os-utils cpu.free 88.47
})

it's so annoying. Why is the os-utils value different from the node-os-utils value? I need the CPU and disk memory values of the server currently running node.js -Current CPU usage** (percent) -Available memory* (free/total) -Available disk space (free/total)

CodePudding user response：

Why is the os-utils value different from the node-os-utils value?

Because one is a percentage (a number between 0 and 100) and one is a number between 0 and 1.

(I would assume that multi-core systems may multiple the maximum number by the number of cores.)

The values are the same. They are just expressed in very slightly different terms.

CodePudding user response：

It seems like os-utils package works well. Just format of percentage was given from 0 to 1, meaning 0 => 0% and 1 => 100% and so on.

About getting disk space volume info you can use package diskusage. You can check docs there https://www.npmjs.com/package/diskusage

const disk = require('diskusage');

// get disk usage. Takes mount point as first parameter
disk.check('/', function(err, info) {
    const freeInPercentage = info.free / info.total;
    const usedInPercentage = info.available / info.total;

    console.log(`free disk space: ${freeInPercentage * 100}%`);
    console.log(`used disk space: ${usedInPercentage * 100}%`);
});