ElixirCasually.Umbrella

Instructions

1. On server:

ulimit -n 64000
MIX_ENV=prod mix phx.server

2. On test runner (master):

ulimit -n 64000
iex --sname "runner" --cookie "elixir-casually" -S mix run -e 'Chaperon.Master.start()'

3. On test runners (slave):

ulimit -n 64000
elixir --sname "runner" --cookie "elixir-casually" -S mix run --no-halt

4. Run the test from the master runner:

LoadTester.run("http://localhost:5000", num_clients: 50, requests_per_sec: 1, duration: 10)

Test results

Setup

• server-1: n1-standard-2 (2 vCPUs, 7.5 GB memory)
• runner-1: n1-standard-1 (1 vCPU, 3.75 GB memory)
• runner-2: n1-standard-1 (1 vCPU, 3.75 GB memory)
• runner-3: n1-standard-1 (1 vCPU, 3.75 GB memory)
• runner-4: n1-standard-1 (1 vCPU, 3.75 GB memory)
• runner-5: n1-standard-1 (1 vCPU, 3.75 GB memory)

Summarized results

Req/s	Min - Ex	Min - Ruby	95th - Ex	95th - Rb	Max - Ex	Max - Rb
2,000	0 ms	1 ms	3 ms	4 ms	50 ms	29 ms
3,000	0 ms	1 ms	3 ms	5 ms	149 ms	74 ms
4,000	0 ms	1 ms	5 ms	6 ms	177 ms	93 ms
5,000	0 ms	1 ms	8 ms	11 ms	96 ms	120 ms
6,000	0 ms	1 ms	4 ms	19 ms	144 ms	126 ms
7,000	0 ms	1 ms	8 ms	35 ms	167 ms	146 ms
8,000	0 ms	1 ms	21 ms	59 ms	209 ms	166 ms
9,000	0 ms	1 ms	44 ms	92 ms	255 ms	1,182 ms
10,000	0 ms	1 ms	83 ms	1,038 ms	275 ms	7,227 ms

See Raw results for more details.

Things to demo (hopefully)

• Pipes
• Immutability
• Pattern matching & guards
• Umbrella apps & subapps
• GenServer
• Supervisor
• Swarm & clustering, auto spin up lots of load runners + node auto-discovery + test running + spin down

Noteworthy

• Elixir core is written mostly (90%) in Elixir: https://github.com/elixir-lang/elixir
• https://www.thairath.co.th/content/1498811?fbclid=IwAR3IM7bMWpW6iMlxuZeFp9w_DOqyrUOV8gtTIXJDtfhMv4E98zDmhxVPhjI

Credits

Thanks to these fellas for making this meetup happen and their support in building this demo:

• Adhapol Vinn
• Pallop Chao
• Panumarch Anantachaiwanich
• Pii Boonchokchuay
• Pongsatorn Paewsoongnern
• Ranatchai Chernbamrung
• Supanat IBoss Potiwarakorn
• Wasawat Somno