AnyCable/Lobby

@palkan
In production, usually we have 2 core, when we know we will get more people, we increase it to 8 core.
The testing with artillery happened on staging, with 2 core, The script runs for 1 min and 20 sec, Initial 30 sec CPU is around 50%, after that it keeps increasing and by the time it reaches 1 min 10 sec it attains 200% and returns error.

Open files limit log
Starting AnyCable 1.0.2 (pid: 3571, open file limit: 64000)

Artillery scripts
websocket_test.yml

config:
  processor: "./my-functions.js"
  target: "wss://URL/cable?access_token=TOKEN"
  ensure:
    maxErrorRate: 1
  phases:
    - duration: 20
      arrivalRate: 1
      rampTo: 5
      name: "Warming up"
    - duration: 60
      arrivalRate: 10
      rampTo: 100
      name: "Max load test"
scenarios:
  - engine: "ws"
    flow:
      - function: "createTimestampedObject"
      # - send: "{{ data }}"
      - send: '{"command":"subscribe","identifier":"{\"channel\":\"ConversationChannel\",\"conversationId\":181}"}'
      - think: 3
      - send: '{"command":"message","identifier":"{\"channel\":\"ConversationChannel\",\"conversationId\":181}","data":"{\"conversation_id\":181,\"body\":\"{{data}}\",\"action\":\"create_message\"}"}'

my-functions.js

module.exports = { createTimestampedObject };

function createTimestampedObject(userContext, events, done) {
  const subscribe = { "command": "subscribe", "identifier": "{\"channel\": \"ConversationChannel\", \"conversationId\": 181 }"}
  const data = Date.now();

  // set the "data" variable for the virtual user to use in the subsequent action
  userContext.vars.data = data;
  userContext.vars.subscribe = subscribe;
  return done();
}