[Bug]: High web app latency (notorious nextcloud issue)

[a-0-dev]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Nextcloud Server is running on 64bit capable CPU, PHP and OS.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Latency of loading a nextcloud site is high, especially with the default "Files" app, which should be snappy. This is not only the case with my own installation, but also with some professionally hosted installations with way more resources.

I observed that before the "Files" app page loads (loading means, until the list of files is visible), many scripts and other files are being received. For me, the site was rendered and usable about the time the file "de.js?v=b17fbaab-0" was received (seemingly a translation file for some UI text for comments).

Before that, many other "unnecessary" things were loaded, including "/apps/dashboard" (which is very slow as an app as well), "user-status-menu.js", the nextcloud logo (which took 5s for whatever reason - and the rest of the site didn't render until it was received!) and many MANY more.

Steps to reproduce

1. Install nextcloud
2. Visit any app's site, e.g. "Dashboard" or "Files"
3. Observe high latency

Expected behavior

I would expect the site to load extremely quickly, and "side features", like the user status, notifications, file comments etc. being loaded after the "main feature", like a files list, was loaded.
Alternatively, I would expect the web apps to be very quick after the first click, so much more caching on the client side or even permanent storage.

Installation method

Manual installation

Operating system

Debian/Ubuntu

PHP engine version

PHP 7.4

Web server

Apache (supported)

Database engine version

PostgreSQL

Is this bug present after an update or on a fresh install?

No response

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "192.168.first.localip",
            "192.168.second.localip",
            "my.domain.tld"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "allow_local_remote_servers": true,
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "24.0.4.1",
        "overwriteprotocol": "https",
        "overwrite.cli.url": "http:\/\/192.168.second.localip\/nextcloud",
        "htaccess.RewriteBase": "\/",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maintenance": false,
        "has_rebuilt_cache": true,
        "theme": "",
        "loglevel": 2,
        "logfile": "\/var\/log\/nextcloud\/nextcloud.log",
        "updater.release.channel": "stable",
        "default_phone_region": "DE",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "app_install_overwrite": [
            "previewgenerator"
        ],
        "preview_max_x": "2048",
        "preview_max_y": "2048",
        "jpeg_quality": "60"
    }
}

List of activated Apps

Enabled:
  - accessibility: 1.10.0
  - activity: 2.16.0
  - announcementcenter: 6.3.1
  - calendar: 3.4.2
  - circles: 24.0.1
  - cloud_federation_api: 1.7.0
  - comments: 1.14.0
  - contacts: 4.2.0
  - contactsinteraction: 1.5.0
  - dashboard: 7.4.0
  - dav: 1.22.0
  - extract: 1.3.5
  - federatedfilesharing: 1.14.0
  - federation: 1.14.0
  - files: 1.19.0
  - files_pdfviewer: 2.5.0
  - files_rightclick: 1.3.0
  - files_sharing: 1.16.2
  - files_trashbin: 1.14.0
  - files_versions: 1.17.0
  - files_videoplayer: 1.13.0
  - firstrunwizard: 2.13.0
  - gpoddersync: 3.4.0
  - logreader: 2.9.0
  - lookup_server_connector: 1.12.0
  - maps: 0.2.0
  - nextcloud_announcements: 1.13.0
  - notifications: 2.12.0
  - oauth2: 1.12.0
  - password_policy: 1.14.0
  - phonetrack: 0.7.0
  - photos: 1.6.0
  - previewgenerator: 5.0.0
  - privacy: 1.8.0
  - provisioning_api: 1.14.0
  - recommendations: 1.3.0
  - serverinfo: 1.14.0
  - settings: 1.6.0
  - sharebymail: 1.14.0
  - spreed: 14.0.4
  - support: 1.7.0
  - survey_client: 1.12.0
  - systemtags: 1.14.0
  - tasks: 0.14.4
  - text: 3.5.1
  - theming: 1.15.0
  - twofactor_backupcodes: 1.13.0
  - updatenotification: 1.14.0
  - user_status: 1.4.0
  - viewer: 1.8.0
  - weather_status: 1.4.0
  - workflowengine: 2.6.0
Disabled:
  - admin_audit
  - encryption
  - files_external
  - quota_warning: 1.14.0
  - richdocuments: 6.1.1
  - richdocumentscode: 22.5.301
  - user_ldap

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

no logs.

Additional info

No response

[bastiencyr]

Hello @a-0-dev ,
I dont want to open a new issue so I post here a related issue about the dashboard. "/apps/dashboard" is really slow to load but what is even worse is that NC load all integrations before loading the top menu bar. It means that a user has to wait that the dashboard is completely loaded to access his files unless he knows the url to the files app or the admin has deactivated the dashboard.
So it would be great if the top menu bar is loaded before integration !

[szaimen]

Hi, please update to 24.0.9 or better 25.0.3 and report back if it fixes the issue. Thank you!

My goal is to add a label like e.g. 25-feedback to this ticket of an up-to-date major Nextcloud version where the bug could be reproduced. However this is not going to work without your help. So thanks for all your effort!

If you don't manage to reproduce the issue in time and the issue gets closed but you can reproduce the issue afterwards, feel free to create a new bug report with up-to-date information by following this link: https://github.com/nextcloud/server/issues/new?assignees=&labels=bug%2C0.+Needs+triage&template=BUG_REPORT.yml&title=%5BBug%5D%3A+

[a-0-dev]

I can confirm the situation has not changed (for my installation) after upgrading to version 25.0.3.

[szaimen]

So is it improved for you and can we this close the issue?

[a-0-dev]

It is just as bad as it was before... It's not unbearable but definitely uncomfortable

[szaimen]

I see you dont have redis configured. Please follow https://docs.nextcloud.com/server/stable/admin_manual/installation/server_tuning.html in order to improve the situation.

Apart from that you could try out https://github.com/nextcloud/all-in-one which should have all performance tuning out of the box.

[a-0-dev]

I used the server tuning manual to tweak my installation of course. It's still rather slow :/ My server environment does not allow me to use the all-in-one solution as I'm using a separate reverse proxy etc.

[szaimen]

as I'm using a separate reverse proxy

That ahiuld not be a problem: https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md

[a-0-dev]

Ok, I will have a look at it when I have time. Not sure how easy it is to migrate from a longer-running instance to AIO, but we'll see.

[a-0-dev]

Still, I know a few people running a Nextcloud instance, the original issue here also got some thumbs up. I guess it's not solely an issue of my installation. I'm sorry I can't provide any more useful information as far as I know

[szaimen]

For migrating see this: https://github.com/nextcloud/all-in-one/blob/main/migration.md