1. How to stress test your application with Gatling ?
Lausanne, September 13th 2012

2. Why a new tool ?

4. Issue n°1:
High performance
http://www.shopfbparts.com/catalog/nal-19201331_w.jpg

5. 1 user = 1 thread

6. With 50 threads on a JVM
http://www.ausmotive.com/F1/2010/British-GP-05.jpg

7. With 2000 threads on a JVM

8. Blocking IO

9. That's what your threads will do most of
the time, waiting ...
http://www.flickr.com/photos/carlotancredi/3447589391

10. ... and sleeping
http://www.flickr.com/photos/maciejdakowicz/4770794503

11. Issue n°2:
Usability

12. Graphical Interface
Listen, it's actually
not complicated ...
http://www.spacebio.uni-bonn.de/ahp/Parabel/Par_Images/240304-Cockpit_BIG.jpg

13. Issue n°3:
Maintenance

14. What was this change about ?

15. Listen to us,
Gatling can change
all that !
http://static.lexpress.fr/medias/15/mai-68_124.jpg, copyright by AFP

16. Say hello to my little friend ...

17. Be asynchronous,
embrace the actors model

18. Don't use blocking IO
> Netty
> Async-Http-Client

19. Scenario
= Code
= DSL
http://gringocentralsanramon.blogspot.ch/2012/02/getting-published-writing-seminar-wed.html

20. version 1.3.0
Expected by the end of September 2012
All examples will be based on this version

21. Easy

22. Démo !
http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg

23. Feeling lazy? Try the recorder.

24. Démo !
http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg

25. Powerful : write your own Scala code

26. But, many used case covered out-of-
the-box by the DSL
● .regex() / .css() / .xpath() / jsonPath()
● .find() / .findAll() / .count()
● .is() / .in() / .not / .whatever
● .doIf() / .repeat() / .during() / .
asLongAs()
● .tryMax() / .exitBlockOnFail()
● .randomSwitch() / .roundRobinSwitch()
● .feeder() : csv() / tsv() / jdbc()

27. Polling

28. Markov chains
(Cycles are not supported so far...)

29. See also : .roundRobinSwitch()

30. Démo !
http://frizzlesworld.files.wordpress.com/2011/02/computer-cat.jpg

31. Coming soon :
> Live reporting in Graphite
> Jenkins reports
> Clustering

32. Fact sheet
● First commit in june 2011
● Created by S. Landelle and R. Sertelon
● About 20k LOCs
● 19 persons have contributed to the project
● 2000 downloads since the beginning
● 500 downloads of Gatling 1.2.5

33. http://gatling-tool.org
http://github.com/excilys/gatling
http://twitter.com/GatlingTool
http://github.com/nire
http://twitter.com/nremond