WELCOME HI GOOD MORNING GOOD MORNING GOOD MORNING GOOD MORNING.
Morning@lohika presentation performance in Agile
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Transcript of Morning@lohika presentation performance in Agile
Andrey Kovalenko5 last years in IT - again. 3 years of developing and implementing distributed protected networks2 last years - performance engineer.
kovalenko.andrey.odessa
Why do we need performance?
What is performance?
Load testing - to verify application behavior under normal and peak load conditions.
Stress testing - To determine or validate an application’s behavior when it is pushed beyond normal or peak load conditions.
Capacity testing - To determine how many users and/or transactions a given system will support and still meet performance goals.
Performance testing flow
What do we need for it?Performance testing
=
Performance testing = long and expensive process
Agile&Performance• Agile is: • Fast • Flexible • Team members embrace different roles
• Traditionally, performance testing is: • Slow (many weeks) • Needs a ‘code freeze’ • Requires an environment for the testing • –Dedicated test tool ‘experts’
When?
Performance in Agile - Gut)Architecture and code optimization
Application failure
Bottleneck early detection
Release date
Real customer data and scenarios
Resolving performance issues
Some best practicesintegrate yourself into the Sprint team/Dev team
Use functional tests for performance
Include your performance tests in CI
Make fixing functional bugs that block performance test a high priority
Don’t pre-optimize before testing
Know when performance is good enough
Cheap! Fast! Quality!
LoadRunner
Some stuff to learnResponsibilities
• Conduct performance regression test, analysis and create test reports summary
• Design performance STP for new features• Create and debug scripts for load tests • Implement tests and analyze data to identify system bottlenecks• Coordinate with customer support teams to diagnose performance issues • Analyze on performance and capacity, tune large scale JAVA applications
(from code level)• Suggest option for resolutions of problems • Maintain, troubleshoot and resolve DB and JAVA application server issues• Interact closely with Dev and QA teams for assure overall quality• Propose performance improvements for product.
Some stuff to learnSkills
• Deep knowledge of HTTP load generation, measurement software• Experience with Oracle/MSSQL Databases and SQL tuning and scripting, Oracle
AWR reports and trace logs • Deep knowledge and experience in Windows and Linux OS• Strong understanding on network, Web servers and browsers• Strong in performance requirement analysis, and construction of performance
test cases• Strong understanding of Java, .NET and VB coding and the use of Java SDK
performance tools.• Experience with HTTP, REST and web services• Deep knowledge in Java Performance (CPU, Memory, IO, SWAP, Network usage),
hotspot detection, GC logs, optimization and analysis of bottle-necks using various profilers
• Able to send executive summary of the tests
Q&A