stress test

[terenceng2010]

Before releasing the app for testing, its better to do some stress test to see how many people we can support.

Via the below load test framework, it emulates user logins without passwords.

https://atmospherejs.com/meteorhacks/meteor-down https://github.com/meteorhacks/meteor-down

try write some test script to emulate users concurrently chating, using class, voting in class to see the performance of pub/sub and meteor methods in kadira

[terenceng2010]

https://github.com/alanning/meteor-load-test

[terenceng2010]

Terminology

Source: Goranka Bjedov, Google Tech Talk

Performance Testing

• given load X, how quickly will the system return a result
• timing

Stress Testing

• when will the system fail and how will it fail
• under what load will the system fail

Load Test

• 80% of max load, what happens if run load for long period of time

Scalability

• if I increase a certain resource, how will my through-put change

Performance Profiling

• used for very specific drill-down

Reliability Testing

• run load for 72+ hours
• five 'nines'

Availability Testing

• if a system fails, how quickly will the system come back online

Why test Performance?

• Can our system return results as fast as customers want?
• To prove stats for agreements
• Peace of mind

Why NOT to test Performance?

• functional testing