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 voilร . 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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[โ€“] [email protected] 4 points 2 years ago

New user registrations closed until tomorrow

Warning: Be careful, this might trigger this bug here: https://github.com/LemmyNet/lemmy/issues/3422#issuecomment-1616112264

[โ€“] [email protected] 4 points 2 years ago

We're alive!!!

Thank you :)

[โ€“] [email protected] 4 points 2 years ago

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

[โ€“] [email protected] 4 points 2 years ago* (last edited 2 years ago) (1 children)

I can't login from my main browser even if I clear the cache and cookies, if I use other browser it works

Edit: I fixed it just by changing my browser language to English and restarting it, hope this is useful for someone.

Also, thanks to Ruud and team for the hard work, everything seems to work really well and fast.

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[โ€“] [email protected] 4 points 2 years ago

Thank you!!

[โ€“] [email protected] 4 points 2 years ago

Special thanks to the other guys for helping make this update possible. Site is snappier than ever and the UI looks fantastic.

[โ€“] [email protected] 4 points 2 years ago

Excellent. Now I can login with jerboa ๐ŸŽ‰

[โ€“] [email protected] 4 points 2 years ago

Thanks so much for everything!

[โ€“] [email protected] 4 points 2 years ago

It keeps logging me out, plus when I log in, alarmingly other users' profile names flash in the top right corner for a second.

[โ€“] [email protected] 4 points 2 years ago

This is really cool that this gets shared. Thanks for all of the info!

[โ€“] [email protected] 3 points 2 years ago

Let us know where donations can go, suspect a stacked docker-compose will reach limits very quickly

[โ€“] [email protected] 3 points 2 years ago

It seems there is still some performance issues.

Maybe consider a webcache like varnish to take some of the load off?

[โ€“] [email protected] 3 points 2 years ago

Seems to work good enough!

[โ€“] [email protected] 3 points 2 years ago

๐Ÿ™Œ Great work team!!!

[โ€“] [email protected] 3 points 2 years ago

Thanks for all the time and work you put towards making this community better! It's really appreciated!

[โ€“] [email protected] 3 points 2 years ago

Excellent work!

[โ€“] [email protected] 3 points 2 years ago

Amazing work! It seems much more performant now, everything seems to be loading faster.

[โ€“] [email protected] 3 points 2 years ago

Let us know where donations can go, suspect a stacked docker-compose will reach limits very quickly

[โ€“] [email protected] 3 points 2 years ago

U peeps are awesome. ๐Ÿ™๐Ÿ™‡

[โ€“] [email protected] 3 points 2 years ago (4 children)

Tried to login but nothing happen except a "?" was added into the link. Tried delete data, cookie, etc but the probelm still persist. Comment from other instance

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[โ€“] [email protected] 3 points 2 years ago (1 children)

obviously not critical, but it looks like there's a small sidebar bug (or feature?) that puts the pic near the instance name if it is the first thing in its description?

[โ€“] [email protected] 3 points 2 years ago

I think that's a feature. But not 100% sure ๐Ÿ˜…
But honestly, I like the look. If it is a bug, it should become a feature ๐Ÿคฃ

[โ€“] [email protected] 3 points 2 years ago

This is awesome. Was a fun read too. Super cool to see what was going on behind the scenes.

[โ€“] [email protected] 3 points 2 years ago (1 children)

we created extra lemmy containers to spread the load. (And extra lemmy-ui containers).

Is Rust HTTP server running into thread limits? database connection pooling? All kinds of internal questions bout that solution.

[โ€“] [email protected] 3 points 2 years ago

I don't know rust. But there were 150 database connections setup by lemmy, but only about 15 of them were used, the rest idle.

[โ€“] [email protected] 3 points 2 years ago

Working well here and can use Jerboa again. Although wefwef is really growing on me!

Edit: couldn't post from Jerboa, got network error. But wefwef worked.

[โ€“] [email protected] 3 points 2 years ago* (last edited 2 years ago) (1 children)

Half the time when I comment, it just spins. :( Edit: Apparently when I comment it posts, but just shows spinning until I manually refresh. Must be on my end.

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[โ€“] [email protected] 3 points 2 years ago

Signed into Jerboa! Thanks devs!

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