node flamegraph on mac

dtrace.md

Install

• https://github.com/thlorenz/cpuprofilify
• https://github.com/thlorenz/flamegraph

Use

Cleanup old map files:

sudo rm /tmp/perf-*

Run your script to profile:

sudo profile_1ms.d -c 'node --perf-basic-prof <script_name>.js' > dtrace.txt

Make flame graph:

cat dtrace.txt | node --max-old-space-size=8192 "$(which flamegraph)" --map /tmp/perf-<pid>.map --inputtype dtrace > flamegraph.svg

--max-old-space-size=8192 for large dtrace files.

prof.md

node --prof <script_name>

node --prof-process isolate-0xnnnnnnnnnnnn-v8.log > processed.txt