~/talk

Dig Deep V8 profiling

on YouTube 23m
Talkat NodeConfEU 2015 · 2015-09-06..09-09· [nodejs, web-performance]

speaker

name:Mike Tunnicliffe
links:none on file

resources

video:https://youtu.be/s1IEJPKMKRI
slides:none on file

summary

Builds a native Node.js add-on with node-gyp and uses the V8 CPU profiler API to start/stop sampling from C++, sets the sampling interval (defaults to 1 ms), and prints a top‑down tree of frames by walking the profile nodes. The demo compiles the addon, runs a tight JSON.stringify workload, and shows the profiler accruing about 312 samples for the hot function, a background thread receiving samples, and a C++ printer that successfully outputs the profile.

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chapters (6)

  1. 0:00Start
  2. 0:51Documentation
  3. 6:06Creating a Handle Scope
  4. 7:15Headers
  5. 9:03Start Profiling
  6. 14:35Cpu Profile Node

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