cpu-stat
v2.0.1
Published
CPU Statistics not provided by `os` module
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cpu-stat
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|. 1___|. 1 |. | | 1___|.| | |. 1 |.| | |
|. |___|. ____|. | |____ `-|. |-|. _ `-|. |-'
|: 1 |: | |: 1 |: 1 | |: | |: | | |: |
|::.. . |::.| |::.. . |::.. . | |::.| |::.|:. | |::.|
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Note: This repo can be found on npm here: cpu-stat
Note: This repo can be found on github here: node-cpu-stat
Note: This module only relies on the os
module, so it should be compatible on all OS's where Node.js runs.
Install
npm install cpu-stat
Example
var cpuStat = require('cpu-stat');
//by default returns cpu usage percent for all cores over a period of the next 1000ms
cpuStat.usagePercent(function(err, percent, seconds) {
if (err) {
return console.log(err);
}
//the percentage cpu usage over all cores
console.log(percent);
//the approximate number of seconds the sample was taken over
console.log(seconds);
});
//get the cpu usage percent for core 0 over a sample period of 2000ms
cpuStat.usagePercent({
coreIndex: 0,
sampleMs: 2000,
},
function(err, percent, seconds) {
if (err) {
return console.log(err);
}
//the percentage cpu usage for core 0
console.log(percent);
//the approximate number of seconds the sample was taken over
console.log(seconds);
});
//get the total number of cores
var totalCores = cpuStat.totalCores();
console.log(totalCores);
//get the average clock MHz over all cores
var avgClockMHz = cpuStat.avgClockMHz();
console.log(avgClockMHz);
//get the clock MHz for core with index 2
var avgClockMHzCore2 = cpuStat.clockMHz(2);
console.log(avgClockMHzCore2);
usagePercent(opts, cb)
Provides a callback cb(err, percent, seconds)
giving the percent
cpu usage and seconds
the length of the sample time, or an error err
Option | Type | Default | Explanation
-------------------- | -------------| ------------------ | ------------
opts | Object
| see below | Options object, specify what you need the defaults will be filled in
opts.coreIndex | Number
| all cores | The index of the core to calculate the usage on. Can use any coreIndex
such that 0 >= coreIndex < memStat.totalCores()
opts.sampleMs | String
| 1000
| sampleMs
is the amount of time to take the measurement over
cb | Function
| none | Callback which has signature cb(err, percent, seconds)
totalCores()
Returns the total number of cores available on the cpu
clockMHz(coreIndex)
Returns the clock speed in MHz of core with index coreIndex
avgClockMHz()
Returns the average clock speed in MHz over all cores
Contributing
Just send a PR, or create an issue if you are not sure.
Areas ripe for contribution:
- testing
- performance
- bugs
Other Stat Modules
Note: net-stat, disk-stat, mem-stat only work on nix platforms.
License
MIT