Docker in MacOs is very slow

问题

I have this docker-compose.yml:

version: "3.1"
services:

    memcached:
      image: memcached:alpine
      container_name: universal-memcached2

    redis:
      image: redis:alpine
      container_name: universal-redis2

    mariadb:
      image: mariadb:10.4
      container_name: universal-mariadb2
      working_dir: /application
      volumes:
        - .:/application
        - "../data/db:/var/lib/mysql" # skasowac
      environment:
        - MYSQL_ROOT_PASSWORD=Haslo
        - MYSQL_DATABASE=sample
        - MYSQL_USER=user
        - MYSQL_PASSWORD=Haslo
      ports:
        - "8083:3306"


    webserver:
      image: nginx:alpine
      container_name: universal-webserver2
      working_dir: /application
      volumes:
          - .:/application
          - ./phpdocker/nginx/nginx.conf:/etc/nginx/conf.d/default.conf
      ports:
       - "8080:80"

    php-fpm:
      build: phpdocker/php-fpm
      container_name: universal-php-fpm2
      working_dir: /application
      volumes:
        - .:/application
        - ./phpdocker/php-fpm/php-ini-overrides.ini:/etc/php/7.3/fpm/conf.d/99-overrides.ini

    volumes:
        generated:
        var:
        static:

    phpmyadmin:
      image: phpmyadmin/phpmyadmin
      links:
        - mariadb
      environment:
        PMA_HOST: mariadb
        PMA_PORT: 3306
      ports:
        - '8081:80'

When I run my newest project in symfony 4 on it, it works very slowly... :(

I have new MacOs and Docker Desktop. I'm currently learning the Symfony and Laravel framework, but this is very slow for Docker. It is not even working on it.

How can I repair it?

回答1:

As a matter of fact, Docker needs a plain Linux kernel to run. Unfortunately, Mac OS and Windows cannot provide this. Therefore, there is a client on Mac OS to run Docker. In addition to this, there is an abstraction layer between Mac OS kernel and applications (Docker containers) and the filesystems are not the same. Because of that, Docker runs on Mac OS slowly. You are not able to run the Docker on Mac OS like on Linux.

If I need to give some instances about real use-cases. I have the same machine. So, I use Symfony 4 on Docker v18 on Mac OS Mojave. This is my Symfony total execution time on Docker. (Obviously, it depends on your frontend and database queries but I try to enlighten you for main logic.)

first time rendering 12000 ms
with Symfony cache: 344 ms
with Docker cache(:cached property of Docker for volumes): 195 ms

As long as I use Symfony without Docker, the following is my total execution time.

without Docker, with Symfony cache: 82 ms

Whereas, we could do some improvements to get better workspace. For example, you can use volumes like this,

volumes:
        - .:/application:cached

回答2:

One option would be using http://docker-sync.io/ But you will not get the same performance as you would in a Linux-based machine.

来源：https://stackoverflow.com/questions/55951014/docker-in-macos-is-very-slow

标签

php

symfony

Docker

docker-compose