express.nodejs.gc_duration_seconds

GC duration by type

Dimensions:None

Available on:

Prometheus

nodejs_gc_duration_seconds

Garbage collection duration in seconds by GC type

Dimensions:None

Sources

Technical Annotations (10)

Configuration Parameters (1)

--max-semi-space-sizerecommended: larger than 4MB default

Increase to reduce GC frequency and use available RAM

CLI Commands (4)

node --prof app.jsdiagnostic

node --prof-process isolate-0xnnnnnnnnnnnn-v8.log > profile.txtdiagnostic

--trace-gcmonitoring

clinic doctordiagnostic

Technical References (5)

stop-the-worldconceptgarbage collectionconceptevent loopconceptV8componentGCconcept

GC pauses cause stop-the-world event-loop stallswarning

▸

Memory leaks cause garbage collection pauses and event loop latencywarning

▸

GC percentage above 10% indicates memory allocation problemwarning

▸

Small default semi-space heap size causes frequent GC pauseswarning

▸