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Performance lab v1 : basics
Or: what is performance, who
cares, and why care?
Session agenda
• Today:
– Presentation : how to approach performance
– Lab: basics & simple NFS testing
• Future sessions
– Network Performance: Drilldown and testing
– Storage, FileSystem , and FS-Protocols
– Benchmarking: harnesses & tailoring for use cases
Performance: why do we care?
Storage UsersNetworkCPU
Servers Database
Application/code
Which is the most critical to your business?
Performance is perceived
User role defines perception
App Complexity : Multi tier
Presentation
layer
Web layer
Business
layer
Data layer
App Complexity: Microservices
Infrastructure underpins all
CPU RAM NIC
OS
Storage
Servers Connectivity
switches routers
cables SFP/optics
Controller
Platform
Sizing
Scaling
Solving
Start at the top..or the bottom?
• Users vs ‘in the weeds’
• Start @ foundation where you have access and control
Expectations
Reality
Problem statement definition
User’s perspective
• Problem statement:
streaming application is
slow.
• Description: when I click
“funniest cat videos
2017”, it takes 2 minutes
to load
Your perspective
• Problem Statement: Reads
from app-fs-01 showing
degradation to
cathy.desktop
• Description: HTTP reads
showing high RTT, excessive
packet loss observed
between app-sw-01 -> core-
rt-02
Baselining
Lab links
• https://github.com/andypern/perf-meetup

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Perf 101-lab-slideshare

Editor's Notes

  1. Since we know we have to focus on the user, keep in mind that performance is all about their perception