Node.js CPU Profiling
Existing Tools
- V8 --prof
- V8 CpuProfiler
- External Profilers + --perf-basic-prof *
Challenges
- V8 --prof / CpuProfiler
- Collect native frames
- Runtime toggling
- Collecting existing code objects
- Inlined Optimized Functions
Challenges
- External profilers
-
--perf-basic-prof is not officially supported by V8
-
Runtime toggling
- Collecting existing code objects
-
Runtime toggling
- After the Turbofan update, interpreted frames are not distinguishable for external profilers
- Inlined Optimized Functions
-
--perf-basic-prof is not officially supported by V8
- Create an API to replace --perf-basic-prof
- Make interpreted frames distinguishable on the stack
Discussed Solutions
External Profilers
Discussed Solutions
External Profilers
Make interpreted frames distinguishable on the stack
Discussed Solutions
External Profilers
Make interpreted frames distinguishable on the stack (v8:959081)
Discussed Solutions
External Profilers
Create an API to replace --perf-basic-prof
- Testing
- Support
- Release timeline
Next steps...
Node.js CPU Profiling Deep Dive
By Mary Marchini
