node-hog-detector

Detects Node hogs on CPU-intensive tasks and reports them in console.

Quick start

npm install node-hog-detector

Then:

var hogDetector = require('node-hog-detector');
hogDetector.start(-1);
hogDetector.stop();

Usage

start(ms, i, t)

• ms : Maximum time in milliseconds the node engine can hog before reporting (small hogs from 1 to 30ms are quite frequent), defaults to 30
• i : Total number of iterations to make (each iteration is 100ms) before exiting, defaults to 3000 (5min)
• t : Total number of hogs superior to ms to report before exiting, defaults to 10

You can use -1 to make the iteration and the reporting infinite. You'll need to quit the iteration with hogDetector.stop().

You can combine these factors: hogDetector.start(100, -1) will report all hogs greater than 100ms for an infinite number of time, until explicitely stopped with .stop().

License

This code is registered under GPLv3

The GNU GENERAL PUBLIC LICENSE (GPL)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see http://www.gnu.org/licenses/