https://github.com/grimmer0125/node_test_profiler

Use v8 built-in profiler on Node.js
https://github.com/grimmer0125/node_test_profiler

nodejs

Last synced: 7 days ago
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Use v8 built-in profiler on Node.js

• Host: GitHub
• URL: https://github.com/grimmer0125/node_test_profiler
• Owner: grimmer0125
• Created: 2019-06-21T08:39:30.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-12-10T19:46:15.000Z (about 2 years ago)
• Last Synced: 2024-12-22T00:23:16.373Z (2 months ago)
• Topics: nodejs
• Language: JavaScript
• Homepage:
• Size: 14.6 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# 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