Symfony2防火墙需要很长时间

Question

I have a problem with Symfony2 firewall component taking ages on some requests.

I've noticed that it mainly happens during AJAX requests, and very specific ones - when I search for an entity using LIKE %..% statements in doctrine (not sure it matters, but that's what I noticed ;)).

Calling the same URL a little later (1 or 2s later) results in "normal" firewall processing time.

I am not using any external data sources for authentication, everything is stored in PostgreSQL.

Look at the following timeline:

Is there a way to debug the firewall directly?

My config looks like this:

security:
firewalls:
    admin_area:
        provider: db_users
        pattern: ^/admin
        anonymous: ~
        form_login:
          login_path: /admin/login
          check_path: /admin/login-check
        logout: 
          path: /admin/logout
          target: /admin
        switch_user: { role: ROLE_SUPERADMIN, parameter: _become_user }

    secured_area:
        pattern:    ~
        anonymous: ~
        http_basic:
            realm: "Secured Demo Area"

access_control:
    - { path: ^/admin/clip-manager/clip/encode/*, roles: IS_AUTHENTICATED_ANONYMOUSLY, ip: 127.0.0.1 }
    - { path: ^/admin/login, roles: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/admin/login-check, roles: IS_AUTHENTICATED_ANONYMOUSLY }
    - { path: ^/admin, roles: [ROLE_ADMIN_LOGIN, ADMIN_AREA] }

providers:
    db_users:
        entity: { class: Webility\Bundle\AppUserBundle\Entity\User, property: username }

encoders:
    Webility\Bundle\AppUserBundle\Entity\User:
        algorithm:          sha256
        iterations:         3
        encode_as_base64:   false

acl:
    connection: default

I am using Symfony\SecurityBundle and JMSSecurityExtraBundle.

Answer 1

It's rather unusual behaviour (unless you're doing something, well... unusual ;).

Try using one of the PHP profilers to see what's going on. I can recommend XHProf with XHProf GUI. It's easy to set up and use.

I'm just guessing, but the problem might be related to the database query you mentioned. Check if fields used in a query have appropriate indexes set.

Edit: I accidentally stumbled on this article linked from the Symfony blog: http://12wiki.blogspot.com.es/2012/11/why-does-symfony-2-firewall-take-so.html

It seems to be a DNS issue.