happiness.pptx.pdf

Transcript

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 = "NIJI" project = "TUENTI" 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[‘ExpoQA’'] = latency if __name__ == '__main__': speech = Speaker() speech.talk() print trans.custom_timers Almudena Vivanco (@MrsDaehin)
3. Performance Team
4. • • • •
6. Fear the Latency
7. Fear the Latency
8. Fear is the path to the dark side. Fear leads to Inertia. Inertia Leads to paralysis. Paralysis leads to going out of Business.
9. Let’s Aim for Speed
11. What shall we Measure?
14. Vista Waterfall Una vez ejecutado veremos Sin Cache de Browser Con Cache de Browser Golden Performance Rules
15. Time is Relative
16. Analytical Review Parameters Localización Browser Velocidad de Conexión Número de test a ejecutar ( coger un número Impar ;) ) First View and Repeat View ( Cache!!! ) Document Complete vs OnLoad Ignorar Errores SSL Capturar tcpdump User Agent ad Hoc Custom Headers What shall we Measure?
17. Size?
18. What shall we Measure?
19. Number of Requests?
21. Number of Domains?
22. SPOF y Block Block simulates a not found error 404 while SPOF or single point of failure simulates a timeout from a given domnain. this tool is useful to measure the impact of an error or to measure the impact of a failure of certain assets like advertisements or trackers, css, wof …. on the other hand , resilience to connectivity issues, if we want to measure SLA of a third party integration or a shard domain conection problem we would use SPOF to simulate how our site will load when there are assets or domains in timeout error. This is useful with ad bulk services or trackers.
25. t = acceptable response time satisfied = response time < t tolerating = t < response time > 4t frustrated = response time > 4t Apdex [t] = (satisfied + tolerating/2)/total requests
26. Real User Monitoring
27. …
28. Time To FIRST BYTE
31. Waterfall Detalles
32. Analyzing the waterfall Weight in KB of the initial html Rendering starting time connections or sockets opened against a given domain number of redirections in use socket for a given resource blocking tcp
33. Custom Metrics [iframe-count] return document.getElementsByTagName("iframe").length; [script-tag-count] return document.getElementsByTagName("script").length; [meta-viewport] var viewport = undefined; var metaTags=document.getElementsByTagName("meta"); for (var i = 0; i < metaTags.length; i++) { if (metaTags[i].getAttribute("name") == "viewport") { viewport = metaTags[i].getAttribute("content"); break; } } return viewport NO se pueden añadir operaciones asincronas :( Timers, Ajax requests etc ...
34. Performance It's not just about adding more servers
36. THINK BIG
38. Real User Monitoring
39. REAL USER MONITORIN G Bring Up RUM* real user monitoring