PAC 2019 virtual Scott Moore

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Performance Testing HTTP/3 (QUIC)
by SCOTT MOORE

Agenda
•HTTP/3 (QUIC) Timeline
•HTTP/3 Technical Breakdown
•HTTP/3 Challenges
•Demo
•Test Results and Findings
•Q&A
2

HTTP/3 TIMELINE

HTTP/2 AdptionRate
Source: HTTP/2 Adoption Dashboard (maintained by Telefónica Research, Case Western Reserve University,
...

HTTP/3 Timeline
• 2014 - Google deploys HTTP/2 over UDP. Calls it “QUIC”.
• November 2016 - Google takes QUIC to IETF. QUI...

HTTP/2 Connection Versus HTTP 1.1
7
Image Source: Cloudflare

HTTP/3 ConnectionVersus HTTP/2
8
Image Source: Medium

WAIT....
Wasn't HTTP/2 multiplexing supposed to solve Head of Line Blocking?
HTTP level = YES. TCP level = NO.
Latency and...

HTTP/3 Stack
10
Image Source: Kinsta
TLS 1.3
1.2+

QLOG
11
• Log for QUIC and HTTP/3 events
• JSON Format
• Allows for debugging and visualization for QUIC streams
• Still b...

HTTP/3 Challenges

Challenges To Testing
•Lack of Support
•Draft code still has debugging (slower)
•Few Web Server Choices:
•LiteSpeed Enterp...

Challenges forHTTP/3
•+/- 5% QUIC connections fail
•CPU Intensive - Requires 2X or more servers
•UDP on port 443 is blocke...

HTTP/3 Tools
“Tools? Where we're going, we don't need tools.”
15

Tools
• cURL (after September 11, 2019)
• HTTP3 Check (http3check.net)
• QLog visualization tool (quicvis.edm.uhasselt.be/...

Current IETF QUIC Implementations
•AIOQUIC - Python
•lsquic - C - LiteSpeed
•ngtcp2 - C - open source effort
•QUICHE - RUS...

Demo - Test Results

The Mission
• Using a realistic web site,
compare:
• HTTP 1.1
• HTTP/2
• HTTP/3 (QUIC)
• Cloudflare/No Cloudflare
• Netrop...

“I apologizefor the crudityofthis model...”
• Set up and configure cloud server instance (Ubuntu 18.04)
• Seperate Databas...

Chrome Waterfalls
22
HTTP 1.1 - 4.6 sec HTTP 2 - 0.5 sec H2 QUIC - 2.5 sec

Test Results - HTTP 1.1- No Network Emulation
23

Test Results - HTTP 2- No Network Emulation
24

Test Results - QUIC - No Network Emulationor Cloudflare
25

AddNetwork Emulation- LTE
26

AddNetwork Emulation- Satellite
27

Test Results - HTTP 1 -WITH Network Emulation LTE
28

Test Results - HTTP 1 -WITH Network Emulation - Satellite
29

Test Results - HTTP 2- WITH Network Emulation- LTE
30

Test Results - HTTP 2- WITH Network Emulation- Satellite
31

Test Results - QUIC - WITH Network Emulation- LTE
32

Test Results - QUIC - WITH Network Emulation- Satellite
33

Summary
• It SEEMS to remove HTTP HOL - but...
• Requires more server CPU/Memory
• Low Bandwidth situations benefit the mo...

Who To Follow
• Robin Marx - @programmingart
• Daniel Stenberg (cURL) - @bagder
• Lucas Pardue - @SimmerVigor
• Barry Poll...

References
• CURL HTTP/3 library - https://github.com/curl/curl/blob/master/docs/HTTP3.md
• AIOQUIC - Python implementatio...

http://scottmoore.consulting
help@scottmoore.consulting
Questionsand Contact

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