Using JMeter for Performance Testing Live Streaming Applications
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With live video usage increasing to watch sporting events, popular TV shows, etc., load and performance testing live streaming applications has become a must to ensure they can withstand heavy traffic. Our Sep 6, 2017 webinar looked at using Apache JMeter™ for testing streaming applications. Until now, JMeter supported the load testing of HTTP Live Streaming (HLS) applications, the leading protocol, with a few different elements. But now, a new HLS plugin for JMeter makes the process much simpler and efficient than before. An overview of the HLS protocol including its key components An introduction to the new JMeter HLS plugin How to learn more and get involved with this open-source project
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Using JMeter for Performance Testing Live Streaming Applications
- 1. Using JMeter for Performance Testing Live Streaming Applications Presented by BlazeMeter a CA Technologies Company Sep 6, 2017
- 2. AGENDA • Intro • HLS Overview • HLS & JMeter Old Style • HLS & JMeter New Style • Q&A
- 3. What a long strange trip it’s been... Dave Karow { Developer Advocate } @davekarow Keynote Systems (7 years) - Load Testing - Synthetic Monitoring dynatrace SOASTA BlazeMeter CA Technologies Continuous Delivery
- 4. HLS Overview HLS = HTTP Live Streaming • Uses only http/https (remember real media?) – Proxy/firewall friendly – Served from any http server/CDN • Adaptive Bitrate: Degrades instead of stalling – Multiple stream variants (by bandwidth/resolution) – Client chooses/re-chooses best stream
- 5. HLS Components 1. Encoding/Encapsulation: Transcoder a. The “heavy lifting” (CPU intensive) b. Outputs: i. .m3u8 master index (list of variants) ii. .m3u8 variant index (list of segments) iii. .ts file containing each segment
- 6. HLS Components 1. Encoding/Encapsulation: Transcoder 2. Distribution: Web Server/CDN/Proxy 3. Client: Mobile Device, js in Browser, etc... Our Focus Today
- 7. 1. Get master playlist for “about_demo” video GET http://hls.demoblaze.com/index.m3u8 2. Parse master playlist for list of variants, choose one (let’s assume low bandwidth environment, so lowest resolution to start) 3. Get variant playlist matching bandwidth/resolution GET http://hls.demoblaze.com/about_demo_hls_600k.m3u8 4. Get and play fragment from variant playlist GET http://hls.demoblaze.com/about_demo_hls_600k00000.ts 5. If live: Go back to #1 to get new master playlist HLS Playback Flow @ High Level
- 9. GET http://hls.demoblaze.com/about_demo_hls_600k.m3u8 #EXTM3U #EXT-X-VERSION:3 #EXT-X-MEDIA-SEQUENCE:0 #EXT-X-ALLOW-CACHE:YES #EXT-X-TARGETDURATION:13 #EXTINF:12.066667, about_demo_hls_2M00000.ts #EXTINF:9.000000, about_demo_hls_2M00001.ts #EXTINF:9.000000, about_demo_hls_2M00002.ts list of fragments for that variant Variant Playlist
- 10. GET http://hls.demoblaze.com/about_demo_hls_600k00000.ts (ts = transport stream fragment) Fragment
- 11. As Seen By BlazeMeter Chrome Extension Master Playlist (m3u8) Variant Playlist (m3u8) Fragments (.ts) Faster Variant Playlist Fragments (.ts)
- 12. Let’s Do A Live Demo
- 13. Many Pieces... Scripting in JMeter: Old Style
- 14. HLS Sampler Plug-In Scripting in JMeter: New Style
- 15. HLS Sampler Plug-In Scripting in JMeter: New Style
- 16. Adding Assertions Assertions can be raised against: • Master Playlist • Variant Playlist Example Assertions: • Response Assertion • Duration Assertion
- 18. Wrapping Up The HLS Sampler plugin is open-source. Pull requests are welcomed! 1. Go to jmeter-plugins.org 2. Search “hls”and click on “HLS Sampler” 3. That puts you in Git-Hub: jump right in!
- 19. Q&A Time
- 20. Next Steps ● Add the HLS Sampler via Plugins Manager or by visiting jmeter-plugins.org ● Create your free account at blazemeter.com ● Performance Testing Blog – blazemeter.com/blog ● Learning Resources – blazemeter.com/resources ● Quick Survey @ Webinar Exit – Thanks!