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Load Testing using Continuous Integration tools

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From 2015 Neotys North American User Conference
Speaker: Richard Pitts
Customer case study of CommerceHub's use of NeoLoad via CI Tools.

Publicada em: Software
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Load Testing using Continuous Integration tools

  1. 1. LOAD TESTING using continuous integration tools Richard Pitts Sr. Load Test Engineer | CommerceHub
  2. 2. Agenda  Our experience adding NeoLoad to our Continuous Integration process. 1. Benefits of using CI to run NeoLoad 2. Why we run NeoLoad using CI 3. How NeoLoad + CI has helped us 4. Common pitfalls to avoid 5. Getting started + best practices
  3. 3. About CommerceHub  Hosted services for e-commerce & retail.  [B2B] Connection between 200+ retailers and 8,900 brands/distributors.  Translate & route drop shipment orders amongst business partners.  Goal: Facilitate e-commerce sales growth for our customers  Processed $10bil GrossMerchValue for our customers in 2014 [33.7mil orders]  Why performance matters to us:  “retail busy season”: Black Friday  Christmas  38k+ users  8.25 mil logins/yr  2 mil hits per month on most visited web page
  4. 4. Benefits of using CI to run NeoLoad Same benefit as any CI Job  Easy to execute  Easy to schedule  Easy to monitor  Build history  Results in Workspace
  5. 5. Benefits of using NeoLoad Plugin  Retrieve Neoload results back into to Jenkins  Display Trends: Avg Response Time & Error Rate  Maintain build history & preserve Neoload reports for each build.
  6. 6. Benefits of using NeoLoad Plugin Collaborate. Easy to share. Link to the build.
  7. 7. Why you should run NeoLoad using CI  If load testing occurs less frequently than desired  New development methodologies  more frequent releases  Scheduled automation avoids waiting on humans, keeps a faster pace.  Our Story…  before NeoLoad  with NeoLoad  with NeoLoad plus CI
  8. 8. Load Testing before NeoLoad • Close to the release date • Late testing  Late Discoveries  Delayed Releases. feature complete build Monthly releases Performance test @ end of dev cycle
  9. 9. Load Testing before NeoLoad  An automated tool could help us load test.  Hopefully one that would inspire us to load test earlier + more often.  Started to Trial + Assess several load testing tools
  10. 10. NeoLoad pilot  Began recording & designing our Neoload scripts
  11. 11. A better Load Test environment  Properly designed for load testing @ high volume [150+ users]  Used CI to automate deployment & configuration of this env  On-premise Load Generators  Web cluster behind Load Balancer
  12. 12. NeoLoad pilot: real progress  Started generating performance test results
  13. 13. Success  implement an automated load testing tool  library of scripts  now easier to include load testing for releases  load testing more things, more often  stockpile load test results for future benchmark comparisons
  14. 14. NeoLoad + Waterfall: How to? So, how did we regularly include NeoLoad tests as part of our waterfall releases?
  15. 15. NeoLoad + Waterfall: Option 1 Three options to include Neoload testing for a release: 1) author new NeoLoad scripts designed to target specific concerns.  Record/Playback  Configure for multi-user concurrency & unique data  Run scripts  Share results
  16. 16. NeoLoad + Waterfall: Option 2 Three options to include Neoload testing for a release: 2) run existing NeoLoad scripts + compare w/ previous release results  Try/validate the scripts  Update/fix outdated scripts  Run scripts  Share results
  17. 17. NeoLoad + Waterfall: Option 3 Three options to include Neoload testing for a release: 3) run NeoLoad scripts on project vs mainline branches, comparing results  Run scripts on mainline branch to obtain baseline results  Run scripts on project branch  Compare project results to baseline results  Is performance of the project branch better/no worse/worse than mainline
  18. 18. Results: Still a Waterfall  Performance testing still occurred @ end of dev cycles  Limited time to re-work performance issues before release dates.  Often, the tests were short samples due to time constraints.  The most recent set of results for comparison was often many weeks old.  Centralized around performance engineer (bottleneck risk)  Sometimes it was “testing for the sake of testing”
  19. 19. Meanwhile: Along comes Agile  Continuous Integration of code  Automated CI builds  Continuous Delivery to test environments  Automated regressions using CI builds  Cross functional team members  “Everyone is responsible for quality” approach  Result:  Sped up development + shortened our dev lifecycle! Release more frequently
  20. 20. Load Testing + Agile Teams  Team mindset: “Performance is everybody's job”  But, most team members had little load testing experience.  Result:  Still had all of the same problems getting Load Tests done.  Completed “in the margins” by perf engineer + agile team member.  Relied upon Ops and/or performance engineer (bottleneck risk)  Load testing wasn’t keeping pace with our Agile teams.  Needed a way to bake Load Testing into our Agile process.
  21. 21. Load Testing + Agile Teams  How could we include LT more often, under Agile process?  Manual performance testing? [+leverage firebug, Yslow, Fiddler, etc.]  Collect performance metrics while we run our automated regression?  WebPagetest.org?  Schedule NeoLoad to run using Cron jobs?  Schedule NeoLoad to run using NeoLoad internal scheduler?  Schedule Neoload to run using CI? Hmmmm… we do have Jenkins.
  22. 22. Jenkins NeoLoad plugin v4.2 [Nov 2013]  Retrieve Neoload results back into to Jenkins  Display Trends: Avg Response Time & Error Rate  Maintain build history & preserve Neoload reports for each build.
  23. 23. Gains from NeoLoad + CI Daily performance “pulse”
  24. 24. Gains from NeoLoad + CI JUnit test results based on SLA profiles
  25. 25. Gains from NeoLoad + CI Collaborate. Easy to share. Link to the build. Increased Collaboration.
  26. 26. NeoLoad Tests: Controlled by CI Scheduled nightly.
  27. 27. Lessons learned Pitfalls to Avoid:  Using only “happy path” scripts  Comparing results over long gaps time  risky  Comparing multiple short samples  inaccurate  Swap sharing the Load Testing environment  bottlenecks  Requiring involvement from Ops or perf. engineer  bottlenecks
  28. 28. Your turn!  Run NeoLoad using Continuous Integration
  29. 29. Step1: get a CI Server, setup for NeoLoad We used an existing remote Jenkins server. Use your existing remote CI server or install Jenkins along side NeoLoad.
  30. 30. Step2: add CI step to run NeoLoadCmd Neotys’ Jenkins Integration Guide explains how to configure –options
  31. 31. Step3: Install NeoLoad plugin for Jenkins
  32. 32. Step4: retrieve Neoload results Jenkins Integration Guide explains how to incorporate NeoLoad results
  33. 33. Where to go from here? Best practices & Pro Tips:  Incorporate performance testing into every DevOps team  Intelligent testing: only run load scripts that test the code that was changed  Reduce the amount of time & resources needed for load testing  For “hardening sprints”- setup a Stress test scenario. Run on-demand using CI  Make use of email alerts and chat notifications in CI
  34. 34. Best Practices: Setup SLA profiles  Setup SLA profiles so pass/fail criteria are bubbled up to CI results
  35. 35. Best Practices: Increase collaboration
  36. 36. Best Practices: Smoke test  Smoke test first (low volume), then run full Load Test
  37. 37. Richard Pitts We are hiring: pittsrt@gmail.com http://www.commercehub.com/about-us/careers/ Share with me: How are you using CI to drive your NeoLoad process? Let me know. Learn more: http://www.neotys.com/introduction/neoload-continuous-integration.html http://www.neotys.com/webcast/Continuous-Performance-Testing-with-NeoLoad.html https://wiki.jenkins-ci.org/display/JENKINS/NeoLoad+Plugin https://github.com/jenkinsci/neoload-plugin