grimmer0125 / node_test_profiler

Use v8 built-in profiler on Node.js

Node Test Profiler

Steps

1. NODE_ENV=production node --prof app.js
2. node --prof-process isolate-0x[Number]-v8.log > processed.txt
3. node --prof-process --preprocess isolate-0x[Number]-v8.log > v8.json
4. git clone https://github.com/v8/v8.git
5. open v8/tools/profview/index.html
6. select v8.json
7. run ref#2 to get tick info. p.s. totoal ticks may apply on multiple-core

ref

1. https://nodejs.org/uk/docs/guides/simple-profiling/ crypto.pbkdf2 and crypto.pbkdf2Sync both spwan a worker thread (___pthread_init) but the latter will make JS main thread to wait for the result for pthread

2. to get how many ticks in 1 second:

   1. gcc getticktime.c
   2. ./a.out