inspector-vm

NodeJS VM Metric Collector

install

This library is meant to be used with typescript / nodejs.

npm install --save inspector-vm

basic usage

import { MetricRegistry } from "inspector-metrics";
import { V8MemoryMetrics, V8GCMetrics } from "inspector-vm";

// get a registry
const registry: MetricRegistry = ...;

// instance the memory metric, contains
//   - space statistics
//   - memory statistics
const memoryMetrics: V8MemoryMetrics = new V8MemoryMetrics("v8", registry.getDefaultClock());
//   - gc statistics
const gcMetrics: V8GCMetrics = new V8GCMetrics("gc", registry.getDefaultClock());

// metric is registered und the name "v8"
// defaults to group "gc"
registry.register(memoryMetrics.getName(), memoryMetrics);

// setup reporter ...

// note that unstopped metrics can cause the application to keep running
gcMetrics.stop();
memoryMetrics.stop();

License

MIT