1. Load testing made easy
Stéphane Landelle @ eBusiness Information
@slandelle

2. Load Testing"
Gatling"
Demo

3. Load Testing"
Gatling"
Demo

4. Load Testing"
Gatling"
Demo

5. Load testing?
About performance
About server side
In “real” conditions

6. Performance
What for?"

7. It’s all ‘bout the money!"
Conversion rates"
Platform costs
Performance
What for?"
(from business POV)

8. "
"
Results/page : 10 => 30
è +500 ms "
è -20% pages seen

9. è -1 % sales"
è Estimated loss: $160M/y
+100 ms

10. Performance"
What for?"
(from dev POV)
Fun!"
(happens to be useful too)"
Anticipate"
Reproduce"
Train

11. How?"
"
"

12. How?"
"
Define goals"
èRequirements

13. How?"
"
Analyze"
èData"
èMonitor

14. How?"
"
Simulate"
èBehaviors"
èInjector

15. How?"
"
Iterate!!!"

17. Jmeter, The Grinder, LoadUI,
Tsung, Locust, Load Runner,
Rational, NeoLoad…

18. Issue #1
High Performance

19. 1 user = "
1 thread

20. 50 threads on a JVM

21. With 2000 threads

23. Blocking I/O

24. Threads ?"
Waiting…

25. … and sleeping

27. JMeter 2.8 perf test, expecting 300 tr/sec
Can you trust your results ?

28. JMeter reference test with Gatling,
expecting 300 tr/sec

29. Usability
Issue #2

30. Listen, it's not that
complicated...
Graphical User Interface

31. Maintainability
Issue #3

32. What is this change about ?

33. Gatling can change
all that !

34. Synchronous"
"
1user=1thread"
"
Blocking I/O
- Asynchronous
- Actor model
- Non blocking I/O

35. Actors

36. NIO

37. Reach new limits

38. From the Play2 Computer-Database sample.
(cf: https://github.com/gatling/computer-database)

39. Scenario "
Scala code"
DSL
"
=
=

40. Use the rich DSL …
Checks
regex / css / xpath / jsonPath
find / findAll / count
is / in / not / whatever
Structures
doIf / repeat / during / asLongAs
randomSwitch / roundRobinSwitch
Error handling
tryMax / exitBlockOnFail
Feeders
csv / tsv / jdbc

41. … or write your own "
Scala code…

42. … or use the Recorder

43. • Maven Plugin
• Maven archetype (run in IDE)
• Jenkins plugin
• Graphite live reporting

45. Coming soon…
• Websockets, JDBC…
• Clustering

46. Demo

48. http://gatling-tool.org
http://github.com/excilys/gatling
@GatlingTool