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[GH-ISSUE #4293] Slow performance #39082
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Reference: github-starred/vaultwarden#39082
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Originally created by @4erf on GitHub (Jan 31, 2024).
Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/4293
Subject of the issue
Vaultwarden server is quite slow. Saving when using Chrome extension can take up to 10 seconds. Website takes long to load and when it loads it only displays the following:
Deployment environment
Install method: Docker image
Clients used: web vault, Chrome extension, Android.
Reverse proxy and version: nginx/1.21.6
MySQL/MariaDB or PostgreSQL version: SQLite
Other relevant details: Served with Cloudflare on custom subdomain. System is quite capable, Ryzen 9, plenty of RAM.
Steps to reproduce
Nothing different from default, just docker image with exposed port 80 and mounted volume on
/data.Expected behaviour
It should be more responsive.
Actual behaviour
It started to be slow and unresponsive suddenly, I didn't update the docker image or change anything, it just suddenly started to become slow. Then I did an update of the docker image, still same issue. Finally, I backed up the db as json, deleted all data, started a fresh vault and imported my data back in, the issue persists.
I believe the issue lays in my data, I must've added some entry in the database that is causing this slowdown, as it started to happen without any change other than new entries to the db. Also, when I started a fresh vault it was fast, until I did the import.
My data is not big, the json was only ~150kb, I have around 170 entries, no attachments or anything fancy, I just use basic fields, custom fields and notes.
Sadly I don't remember exactly when it started to slow down, so I have no clue of which entry I added that caused this, I can do some troubleshooting (deleting recent entries until it works) if it's needed.
Troubleshooting data
I believe only troubleshooting data I can provide is a redacted version of my json that still fails. But it would require some time to build, let me know if it's a must to provide it. Or if you guys have a script that can automatically redact everything, would be great.
@BlackDex commented on GitHub (Jan 31, 2024):
Looks more like a reverse proxy issue.
Any logs of Vaultwarden which state anything?
This is not enough info to do anything.
@bibicadotnet commented on GitHub (Jan 31, 2024):
The only thing that causes slow loading in the client as far as I know is related to the Encryption key settings
Check to see if you're keeping these numbers too high
@4erf commented on GitHub (Jan 31, 2024):
Hi, @BlackDex, thanks for the insight, I think you found the source of the issue,
In terms of logs there was nothing useful, only icon fetching logs.
However, regarding reverse proxy, I restarted nginx and the problem just went away... But, I know is only a matter of hours/days until it starts failing again, the same happened when I did the fresh install, worked for around a day but then stopped working, I believed it was my data the issue, but turns out it was this.
It's interesting because no other service under my nginx is failing like this. Do you know how can I debug this further?
I will wait until it fails again and report any information that you recommend me to take.
@4erf commented on GitHub (Jan 31, 2024):
Well, it didn't really take long, it's already slow again. If you have any debug ideas let me know.
@BlackDex commented on GitHub (Jan 31, 2024):
Check your nginx logs.
Validate the config against the wiki proxy examples.
@4erf commented on GitHub (Jan 31, 2024):
I found root cause.
I noticed that whenever the page took long to load nginx logs wouldn't show any incoming request. Turns out the issue is between Cloudflare and my network and the white page with vaultwarden logo was just Cloudflare caching.
I will begin debugging my side, this is not a vaultwarden's issue, sorry for any inconvenience.
Thanks @BlackDex for such quick help, highly appreciate it!
@Hammerhand17 commented on GitHub (Jul 11, 2024):
Did you finally get to solve the issue? I`'m suffering the same and don't know how to solve it.
@sirterric commented on GitHub (Aug 10, 2024):
I was having the same issue, and after changing the KDF algorithm to Argon2id (I was using PBKDF2-SHA-256), everything works faster again. I will do some test but right now is working fine.
My vaultwarden is on docker under linux, and I'm using Cloudflare Tunnels.
@Joly0 commented on GitHub (Jun 10, 2026):
He,y dont want piggy back this issue, but is it possible to set the algorithm to Argon2id for all new users (or existing ones even)?
@stefan0xC commented on GitHub (Jun 10, 2026):
Why do you do it then? When there has been a recent discussion about this #6984 and also a relevant PR still open #6983
@Joly0 commented on GitHub (Jun 10, 2026):
Couldnt find either the discussion nor the PR when i searched for them, but may be because i searched for things like "algorithm" and not "kdf"
@stefan0xC commented on GitHub (Jun 10, 2026):
You could have also searched for
argon2idor open a new discussion instead of necrobumping a closed issue.