Performance test - YaJUG Octobre 2012

YAJUG - Octobre 2012Claude Falguière @cfalguiere goo.gl/4mmJQ

DES TESTS DE PERFORMANCES ...MAIS POURQUOI ?

DES TESTS DE PERFORMANCES ...MAIS POURQUOI ?

mercredi 7 novembre 12

http://goo.gl/4mmJQ

http://goo.gl/4mmJQ

CLAUDE FALGUIERE

@cfalguiere

Technical architect

http://cfalguiere.wordpress.com

Duchess France JUG Leader

+Claude Falguiere


https://github.com/cfalguiere/ClojureBigDataJugSummerCamp2012










performance

how to persuade your boss

design relevant tests

be aware of bias

prepare for the go live


marathon

Performance ?

sprintou


speedcapacity

volumeor

or


and availability


and efficiency


2 s 6 s 8 sattente constaté

distance between happy and unhappy

It can be measured ...


assumed complexity

rendering order

performance stability

... and it depends on users


We use the most performing frameworks !

Let’s upgrade the CPU

Let’s go to the Cloud

1

2

3


Performance enhancement

costsrevenues

Faster

Amazon :+100 ms -1% sales

Google : +500 ms –20% pages seen


Less calls to the call centerLess customers in the office

savings

Performanceenhancement

costs


savings

Less resources


costs



temps

costs

revenues

More turnover

Less costs


An endless struggle


Individual Group Crowd

Behavior under stress


Crowd

«unit» Test

breakdown

Individual Group

Slowness

Iterations

Volume

Wait and timeouts


YSlow Page Speed

HTTP Proxy



Crowd

mimic a few concurrent users

Individual Grouprace conditioncontentionlive/dead locks


Foule

Load test Peak stress test

Individu GroupeCapacity bounds

Overloading Leaks

Aging test Failure simulation

iso-prod


Sizing according to the capacity


REQ-1234 : High performance is required


Who ?

What ?

Where ?

When ?

How ?

Why ?


Essential

Frequent

High-Risk

FrequentFrequent

FrequentWhat are they doing ?




REQ-5678 : Landpage should show up in less than 600 ms


Time Serie

and distribution


Moyenne 1,2s 90% des relevés sont < 3,5s

Unaware of

StrikingRare

Quantile 90% = 3,5s


Some bad response time

Unstable response time

Bimodal !? ...


Goals and drivers

Indicators

Scenarios

Volumes

Datasets

Types of test and duration

Target platform


Garbage in - Garbage outrepresentativeness


bias


Find biases to improve the result

Find biases to degrade the result


volumesscenario, data, search phrases

cachestest duration and rate

ignore errorsignore uncommon use cases

SimplifyArrange


Which show better results ?

A B


Which shows more errors ?

A B


Iso-prod not required

algorithmscontentionsrobustnessscalability

agingfailure simulation

Anticipate

Iso-prod

load test (capacity)response time

reliability on load


Design for failure


Test to learn


Prepare monitoring


Claude Falguiè[email protected]/4mmJQ

Thank you

"Reality is merely an illusion, albeit a very persistent one. "- Albert Einstein


http://goo.gl/4mmJQ

http://goo.gl/4mmJQ

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Performance test - YaJUG Octobre 2012

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