Slow app start / the complete address book is being transferred

[nicokaiser]

Steps to reproduce

1. Open Contacts app

Expected behaviour

The Contacts app should open fast

Actual behaviour

The Contacts all takes a lot of time to load and transfers lots of data.

Upon startup, the whole addressbook is being transferred, which, for medium-sized addressbooks (like ~200 contacts, some of them with photos) can be quite large. In this case ~10 MB of data is being transferred every single time I open the Contacts app.

I'm not sure if this is by concept (as the Contacts app claims to be only a CardDAV client), but I consider this to be quite inefficient and slow for anything larger than trivial addressbooks with photos (think of web clients in mobile networks with restricted data volume and speed).

Server configuration

Operating system: Debian 8

Web server: nginx

Database: MySQL 5.5

PHP version: PHP 5.6

ownCloud version: 9.0.0

Contacts version: 1.0.0.0

Updated from an older ownCloud or fresh install: Updated from 8.x

Signing status (ownCloud 9.0 and above):

No errors have been found.

List of activated apps:

Enabled:
  - activity: 2.2.1
  - calendar: true
  - comments: 0.2
  - contacts: true
  - dav: 0.1.5
  - federatedfilesharing: 0.1.0
  - federation: 0.0.4
  - files: 1.4.4
  - files_sharing: 0.9.1
  - files_texteditor: 2.1
  - files_trashbin: 0.8.0
  - files_versions: 1.2.0
  - files_videoplayer: 0.9.8
  - firstrunwizard: 1.1
  - gallery: 14.5.0
  - news: true
  - notifications: 0.2.3
  - provisioning_api: 0.4.1
  - systemtags: 0.2
  - templateeditor: 0.1
  - updatenotification: 0.1.0
Disabled:
  - encryption
  - external
  - files_external
  - files_pdfviewer
  - tasks
  - user_external
  - user_ldap

The content of config/config.php:

{
    "system": {
        "instanceid": "512fdebce061d",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "datadirectory": "\/var\/www\/cloud....\/data",
        "dbtype": "mysql",
        "version": "9.0.0.19",
        "dbname": "owncloud",
        "dbhost": "localhost",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "default_language": "de",
        "defaultapp": "files",
        "knowledgebaseenabled": true,
        "enable_avatars": true,
        "allow_user_to_change_display_name": true,
        "remember_login_cookie_lifetime": 1296000,
        "session_lifetime": 86400,
        "session_keepalive": true,
        "mail_domain": "cloud.....",
        "forcessl": true,
        "maintenance": false,
        "theme": "",
        "loglevel": 0,
        "trusted_domains": [
            "cloud....."
        ],
        "mail_smtpmode": "smtp",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "appcodechecker": false,
        "mail_smtpauthtype": "PLAIN",
        "mail_smtpauth": 1,
        "mail_smtphost": "smtp.mandrillapp.com",
        "mail_smtpport": "587",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "tls",
        "enable_previews": false,
        "trashbin_retention_obligation": "auto"
    }
}

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser: Chrome 48

Operating system: OS X 10.11

CardDAV-clients: iOS 9.2, OS X 10.11