Limit CPU usage

In order to avoid high CPU/RAM usage, it is possible to set the number of workers using the environment variable GUNICORN_NUM_WORKERS.

Here, we will take a number of workers = 2. Adjust it according to your needs. It may be a good idea to check the CPU/Threads available before choosing the value:

lscpu | grep CPU

The easiest way is to declare the variable in the docker-compose.yml file, under the "environment".

version: "3.7"
services:
  grampsweb:
    environment:
      GUNICORN_NUM_WORKERS: 2

Other ways are possible, for example by storing the variable in a file, and calling it in the startup command:

docker compose --env-file ./env up

In this case, the env file would contain a single line: GUNICORN_NUM_WORKERS=2