As fast as C?

Transcript

1. As fast as C? Writing high performance stream parsers in

   JS. Felix Geisendörfer June 27, 2012 - London Node.js User Group

2. Thanks Forward!

3. Felix Geisendörfer

4. (@)felixge(.de)

5. core contributor

6. transloadit.com

7. ~50 npm modules

8. node-formidable

9. node-mysql

10. Parser Geeks?

11. As fast as C?

12. Dubious Benchmarks Ahead!

13. Selecting 100k blog post rows

14. None
15. None

16. 0 15000 30000 45000 60000 node-mysql-0.9.6 node-mysql-libmysqlclient-1.3.3 node-mysql-2.0.0-alpha3 53966 36429

    20968 Rows per Second node-mysql-0.9.6 node-mysql-libmysqlclient-1.3.3 node-mysql-2.0.0-alpha3 https://github.com/felixge/mysql-client-benchmarks

17. 0 17500 35000 52500 70000 node-mysql-0.9.6 node-mysql-libmysqlclient-1.3.3 node-mysql-2.0.0-alpha3 php-mysqlnd-5.13 68097

    53966 36429 20968 Rows per Second node-mysql-0.9.6 node-mysql-libmysqlclient-1.3.3 node-mysql-2.0.0-alpha3 php-mysqlnd-5.13 https://github.com/felixge/mysql-client-benchmarks

18. Pure node.js parsers can compete with C Addons

19. Lessons Learned

20. Practice

21. Benchmark First

22. Buffering can be good!

23. Code!

24. it

25. Sponsors

26. They’re hiring! @dan_jenkins

27. Also hiring!

28. Questions? ” http://felixge.de/ [email protected] @felixge

29. Algorithms

30. ------------------------------4a62195680a6 Content-Disposition: form-data; name="upload1"; filename="file1.txt" Content-Type: text/plain file 1 data

    ... ------------------------------4a62195680a6 Content-Disposition: form-data; name="upload2"; filename="file2.txt" Content-Type: text/plain file 2 data ... ------------------------------4a62195680a6-- Example: Multipart (File Uploads)

31. Lots and lots of file data ... ------------------------------4a62195680a6 Naive Boundary

    Search: One byte at a time