@lodestar/beacon-node
Version:
A Typescript implementation of the beacon chain
18 lines • 840 B
JavaScript
import { collectDefaultMetrics } from "prom-client";
import { gcStats } from "#prometheus-gc-stats-wrapper";
export function collectNodeJSMetrics(register, prefix) {
collectDefaultMetrics({
register,
prefix,
// eventLoopMonitoringPrecision with sampling rate in milliseconds
eventLoopMonitoringPrecision: 10,
});
// Collects GC metrics using a native binding module
// - nodejs_gc_runs_total: Counts the number of time GC is invoked
// - nodejs_gc_pause_seconds_total: Time spent in GC in seconds
// - nodejs_gc_reclaimed_bytes_total: The number of bytes GC has freed
// `close` must be called to stop the gc collection process from continuing
const close = gcStats(register, { collectionInterval: 6000, prefix });
return close;
}
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