Introducing Profiling for Node.js
Released on: March 2026Atatus Profiling for Node.js brings continuous, production-safe profiling to your Node.js applications. With always-on CPU and memory profiling, teams can identify hot functions, memory leaks, and event loop bottlenecks without impacting application performance.
Visualize execution paths with interactive flame graphs, compare profiles across deployments to catch performance regressions, and drill down to function-level timing to pinpoint exactly where your application spends its time.
Key Features of Node.js Profiling in Atatus:
- CPU Flame Graphs: Visualize CPU consumption across your entire call stack with interactive flame graphs that highlight the hottest code paths and most expensive functions.
- Memory Profiling: Track heap allocations, identify memory leaks, and analyze garbage collection patterns to optimize memory usage and prevent out-of-memory crashes.
- Event Loop Monitoring: Detect event loop lag and blocking operations that degrade request latency and throughput in your Node.js applications.
- Differential Profiling: Compare profiles between deployments, time ranges, or service versions to quickly identify which code changes caused performance regressions.
- Low-Overhead Collection: Production-safe profiling with less than 2% CPU overhead, using V8 sampling profiler integration for continuous collection without impacting users.
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