cpu-percent

cpu-percent

use procfs to return % cpu use for the whole system or a specific process

var percent = require('cpu-percent')

percent(function(err,percent){
  if(err) {
    // this will continue polling and percent will be undefined.
    // call stop if you want to stop on error.
  }

  console.log(percent,'%')
})

percent.pid(process.pid,function(err,percent){
  // percent is the % of the whole system that is being used by this process
})

API

• var stop = module.exports(eventBack,sampleTime,windowSize)

  • eventBack, is a function that is called for each new sample

    • eventBack(Number percent), eventBack is called with one argument. the percent cpu used over the sample size

  • sampleTime, the time in ms to poll for cpu use. default 1000

  • windowSize, the number of samples to average for the percentage. default 5

  • returns a stop function. calling stop() stops the sampling interval.

• var stop = cpuPercent.pid(pid,eventBack,sampleTime,windowSize)

  • pid the process id to watch

  • eventBack, is a function that is called for each new sample

    • eventBack(Number percent), eventBack is called with one argument. the percent cpu used over the sample size

  • sampleTime, the time in ms to poll for cpu use. default 1000

  • windowSize, the number of samples to average for the percentage. default 5

  • returns a stop function. calling stop() stops the sampling interval.