process.memoryUsage()
Returns an object describing the memory usage of the Node process in bytes.
Syntax
process.memoryUsage()Returns
object — Has rss, heapTotal, heapUsed, external, and arrayBuffers.
Examples
const m = process.memoryUsage();
console.log(Math.round(m.heapUsed / 1024 / 1024), 'MB heap');
Output
18 MB heap
console.log(process.memoryUsage.rss());
Output
48234496
Notes
`rss` is total resident memory; `heapUsed` is live V8 objects.
`process.memoryUsage.rss()` is a cheaper call when you only need
RSS. Sample periodically for leak detection rather than once.