Node.js & Libuv•Part 2: Runtime Internals, Libuv & The Event Loop (6 - 20)
Profiling Node.js applications with Flame Graphs.
In Simple Words:
Run Node.js with --prof flag, then process generated v8.log with node --prof-process isolate-*.log > processed.txt. Or use Clinic.js Flame (clinic flame -- node server.js) to generate interactive flame graphs pinpointing hot code paths.
bash
# Profile application with Clinic.js Flame:
npx clinic flame -- node server.js
# Generates interactive HTML visualization of CPU bottlenecks