vmstat-s

Show CPU/mem detailed and summary stats on a linux machine.

Command-line Example

API Example

In addition to vmstat-s shell command-line, you can also require('vmstat-s') from your node.js application as you wish.

var promise = require('vmstat-s')(); // this return a promise of vmstats instance
promise.then(function (vmstats) {
    console.dir(vmstats.getLastData()); // print out initial (mem usage data only)
    setTimeout(heartbeat, 2*1000); // interval 2 seconds
    function heartbeat() {
      setTimeout(heartbeat, 2*1000);
      vmstats.next()
        .then(console.dir); // print out current data (mem usage data and cpu usage data). Cpu usage is calculated from tick count diffs, thus require at least 2 measures.
    }
});

How it works

This module is based on vmstat -s linux command. It get memory and cpu tick counters with fixed interval and print out summary info to console.

install

With npm do:

npm install vmstat-s -g

license

MIT