node-sysstat

Provides Node.JS system statistics in a 'stats' event, emitted in a configurable interval.

While working in the worker_thread environment collects statistics of the worker_thread itself.

Install

``
npm install node-sysstat
`

Example


`js
const Sysstat = require('node-sysstat');
let sysstat = new Sysstat({interval: 5});
sysstat.on('stats', (stats) => {
console.log(stats);
})
`

Result

`js
{
'cpu.usage.process': '0.83',
'cpu.usage.thread': '0.42',
'latency.p99': 0.19084699999999977,
'latency.mean': 0.08614296356275375,
'latency.max': 0.6577909999999996,
'latency.min': 0,
'mem.rss': 17821696,
'mem.heapTotal': 5697536,
'mem.heapUsed': 3162536,
'mem.external': 1555464,
'mem.arrayBuffers': 9389,
'mem.heap.large_object_space.used': 393272,
'mem.heap.large_object_space.total': 401408,
'mem.heap.old_space.used': 2278000,
'mem.heap.old_space.total': 3026944,
'mem.heap.new_space.used': 0,
'mem.heap.new_space.total': 8288,
'mem.heap.code_space.used': 182752,
'mem.heap.code_space.total': 430080,
'mem.heap.map_space.used': 271280,
'mem.heap.map_space.total': 528384,
'gc.Scavenge.count': 0,
'gc.Scavenge.time': 0,
'gc.MarkSweepCompact.count': 0.4,
'gc.MarkSweepCompact.time': 0.9186854,
'gc.IncrementalMarking.count': 0.4,
'gc.IncrementalMarking.time': 0.020257,
'gc.ProcessWeakCallbacks.count': 0.2,
'gc.ProcessWeakCallbacks.time': 0.0013306,
'gc.time': 0.940273
}
``