Modelling performance tests
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Talk given in Madrid May 16th in Tuenti with Nexo QA.
![import random
import time
import requests
class Speaker(object):
def __init__(self):
born = "Avilés - Asturias"
studies = "Applied Maths and Computability"
jobdescription = "Performance Jedi"
company = "Telefónica I+D"
team = "Product Engineering"
project = "AWAZZA"
talks = [VLC Testing, DevopsDays, WebPerfDays, Velocity]
def talk(self):
start_timer = time.time()
r = requests.get('http://www.slideshare.net/almudenavivanco')
r.raw.read()
latency = time.time() - start_timer
self.custom_timers[‘After Test 2016'] = latency
if __name__ == '__main__':
speech = Speaker()
speech.talk()
print trans.custom_timers
Almudena Vivanco
(@MrsDaehin)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Modelling performance tests
- 1. Performance Modelling Matemáticas y sentido común
- 2. import random import time import requests class Speaker(object): def __init__(self): born = "Avilés - Asturias" studies = "Applied Maths and Computability" jobdescription = "Performance Jedi" company = "Telefónica I+D" team = "Product Engineering" project = "AWAZZA" talks = [VLC Testing, DevopsDays, WebPerfDays, Velocity] def talk(self): start_timer = time.time() r = requests.get('http://www.slideshare.net/almudenavivanco') r.raw.read() latency = time.time() - start_timer self.custom_timers[‘After Test 2016'] = latency if __name__ == '__main__': speech = Speaker() speech.talk() print trans.custom_timers Almudena Vivanco (@MrsDaehin)
- 3. Users vs request • ¿cuánto aguanta nuestra plataforma?
- 4. SCENARIOS: Identify the scenarios that are most commonly executed or most resource-intensive
- 5. WORKLOAD MODEL: User Session Duration in average. It is important to define the load levels that will translate into concurrent usage, overslapping users, or user sessions per second.
- 6. USER SCENARIO: Navigational Path, including intermediate steps or activities, taken by the user to complete a task. We will call it User Session from now on.
- 7. THINK TIMES: User thinktimes → Pause between pages during a User Session depending on the User Type*
- 8. User Types: Identify the User … new, revisiting or both.
- 9. Performance Acceptance Criteria: Response time, System load, Throughput ...
- 10. METRICS: Only well-selected metrics that are analyzed correctly and contextually provide information of value.
- 11. DESIGN TEST: Using your scenarios, key metrics, and workload analysis …
- 12. RUN TEST: the load simulation must reflect the test design
- 13. ANALYZE RESULTS: Find bottlenecks, memory leaks, cpu hogs, bad sofware design …
- 14. The Maths behind
- 15. “mi tiempo medio de respuesta está bien."
- 16. Despues … en PROD ...
- 17. Performance It's not just about adding more servers
- 18. Apdex Index t = acceptable response time satisfied = response time < t tolerating = t < response time > 4t frustrated = response time > 4t Apdex [t] = (satisfied + tolerating/2)/total requests
- 20. • Percentiles • Moda • Media • Mediana • Desviación Estándar
- 22. Matemáticas y Sentido Común http://www.raosoft.com/samplesize.html
- 29. Modelando el uso de la aplicación Identificar el objetivo de la prueba • Volumen de tráfico? • Escala? • Picos de carga? • Robusto?
- 30. 0 Second ? Second ? Second ? Second Acceptable User Experience Unacceptable User Experience Questionable User Experience Business is Closed Response Time Load Estrategia de Test Prueba de Carga Prueba de Stress Prueba de Picos Prueba de Robustez
- 31. Cuántos Virtual User para simular una población de tamaño N
- 36. Jmeter Test Plan User Defined Variables Functional Test Mode
- 37. User defined Variables at Test Plan level to be used from Jenkins
- 38. 53.35 6.91 16.57 10.89 8.47 2.67 0.96 0.18 Visit a Channel Visit My stuff area Visit the Home page Estudio del tráfico Real. Cogemos el Maximo y la Mediana Porcentaje de Visitas por Funcionalidad
- 39. WorkLoad VUsers Requests Expected per VUser Results SPOF
- 40. User Behaviour in JMeter Only Once Controllers Cache Management Cookie Management Header Manager Think Times
- 41. Jmeter in Cloud commercial tools
- 42. Resources • http://www.raosoft.com/samplesize.html • http://analyze.websiteoptimization.com/wso • http://mobitest.akamai.com/m/index.cgi • http://stevesouders.com/mobileperf/mobileperfbkm.php • https://msdn.microsoft.com/en-us/library/bb924370.aspx • http://www.quotium.com/performance/load-testing-
- 43. ¿Quieres desarrollar el FUTURO? ¿Te gustaría ser parte de la próxima REVOLUCIÓN DIGITAL? Telefónica puede hacerlo posible! Si estás interesado en saber más…: https://career012.successfactors.eu/sfcareer/jobreqcareerpvt?jobId=57526&company=Telefonica& username=&st=F7ADCB33705144D651DF895CABA34576C6732116