this post was submitted on 01 Jul 2023
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Lemmy.World Announcements

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Looks like it works.

Edit still see some performance issues. Needs more troubleshooting

Update: Registrations re-opened We encountered a bug where people could not log in, see https://github.com/LemmyNet/lemmy/issues/3422#issuecomment-1616112264 . As a workaround we opened registrations.

Thanks

First of all, I would like to thank the Lemmy.world team and the 2 admins of other servers @[email protected] and @[email protected] for their help! We did some thorough troubleshooting to get this working!

The upgrade

The upgrade itself isn't too hard. Create a backup, and then change the image names in the docker-compose.yml and restart.

But, like the first 2 tries, after a few minutes the site started getting slow until it stopped responding. Then the troubleshooting started.

The solutions

What I had noticed previously, is that the lemmy container could reach around 1500% CPU usage, above that the site got slow. Which is weird, because the server has 64 threads, so 6400% should be the max. So we tried what @[email protected] had suggested before: we created extra lemmy containers to spread the load. (And extra lemmy-ui containers). And used nginx to load balance between them.

Et voilΓ . That seems to work.

Also, as suggested by him, we start the lemmy containers with the scheduler disabled, and have 1 extra lemmy running with the scheduler enabled, unused for other stuff.

There will be room for improvement, and probably new bugs, but we're very happy lemmy.world is now at 0.18.1-rc. This fixes a lot of bugs.

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[–] [email protected] 2 points 1 year ago

Just signed up and everythings working well for me!

[–] [email protected] 2 points 1 year ago

Even using Tor, the site load-times seem a lot snappier. Exciting times.

[–] [email protected] 2 points 1 year ago

Seems that sometimes the hot algorithm gets messed up :/

[–] [email protected] 1 points 1 year ago
[–] [email protected] 1 points 1 year ago

Thanks for your time and effort! After the kids have gone to bed, grab yourself a beer and put your feet up!

[–] [email protected] 1 points 1 year ago

Awesome, Jerboa revived!

[–] [email protected] 1 points 1 year ago

@ruud Thank you! This is an important one for the community! And maybe the servers too. ;)

[–] [email protected] 1 points 1 year ago

Thanks very much for your time and effort Ruud, it's much appreciated! Now, after you've put the kids to bed, grab yourself a beer and put your feet up!

[–] [email protected] 1 points 1 year ago

Thanks for the monster effort on the update, these things are never trivial.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (1 children)

Does it still sync with kbin.social?
00:35 CET / 22:35 UTC

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

It takes a while, no lemmy.world favorites yet.

edit: ~ 2hours, no sync yet :(

[–] [email protected] 1 points 1 year ago

@ruud Thank you for the work you guys are doing. Without you, we wouldn't have an organized place to go after Reddit and Twitter.

[–] [email protected] 1 points 1 year ago

So I can't login and the reset passwork button doesnt seem to do anything πŸ’€

[–] [email protected] 1 points 1 year ago
[–] [email protected] 1 points 1 year ago

Is the sort algorithm still messed up? In other instances it shows more recent posts in the hot section.

[–] [email protected] 1 points 1 year ago

Love the teamwork

[–] [email protected] 1 points 1 year ago

What I had noticed previously, is that the lemmy container could reach around 1500% CPU usage, above that the site got slow. Which is weird, because the server has 64 threads, so 6400% should be the max. So we tried what @[email protected] had suggested before: we created extra lemmy containers to spread the load. (And extra lemmy-ui containers). And used nginx to load balance between them.

Et voilΓ . That seems to work.

They're on virtual tin and didn’t configure properly. There are limits in the flat files you need to change by hand to get it to scale properly, it’s tricky.

[–] [email protected] 1 points 1 year ago

Woo! Great work!

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