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 @stanford@discuss.as200950.com and @sunaurus@lemm.ee 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 @sunaurus@lemm.ee 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€“] cute_cat@lemmy.world 4 points 2 years ago

I really enjoy how lemmy is growing!

[โ€“] stickyfranklin@lemmy.world 4 points 2 years ago
[โ€“] DelvianSeek@lemmy.world 4 points 2 years ago

Just want to say thank you. Your hard work is very much appreciated.

[โ€“] decadentrebel@lemmy.world 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€“] Netrunner@lemmy.world 4 points 2 years ago

I can finally login!

[โ€“] Richie@lemmy.world 4 points 2 years ago (1 children)

Awesome! Loading issues are still the bane of Lemmy's existence though, or at least it is for me and my experience with Lemmy. Everything just loads so slow. Sorting is still broken as well. Communities that I KNOW that are active just show as blank for me no matter what I sort by.

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[โ€“] cute_cat@lemmy.world 4 points 2 years ago

I really enjoy how lemmy is growing!

[โ€“] MicahParsons@lemmy.world 4 points 2 years ago

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

[โ€“] cute_cat@lemmy.world 4 points 2 years ago

I really enjoy how lemmy is growing!

[โ€“] Rooki@lemmy.world 4 points 2 years ago (1 children)

Is there a issue with the api? ( Because the api wrapper lemmy-js-client doesnt work on login. ) I tried it yesterday but not today yet. I will test it when i can :)

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[โ€“] albertye@lemmy.world 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€“] hydra@lemmy.world 3 points 2 years ago

Seems to work good enough!

[โ€“] srasmus@lemmy.world 3 points 2 years ago

Excellent work!

[โ€“] nucleative@lemmy.world 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€“] DigitalPortkey@lemmy.world 3 points 2 years ago

Absolutely loving the new UI changes. Thanks for being so transparent with us as well!

[โ€“] dasnet@mastodon.social 3 points 2 years ago
[โ€“] ubergeek77@lemmy.ubergeek77.chat 3 points 2 years ago* (last edited 2 years ago)

Running so many Lemmy instances against the same database doesn't cause race conditions? I wonder why that "just worked" so easily, usually load balancing DB-backed apps is a whole beast on its own.

[โ€“] ChriskiV@lemmy.world 3 points 2 years ago

Signed into Jerboa! Thanks devs!

[โ€“] lazycouchpotato@lemmy.world 3 points 2 years ago

0.18 looks a lot better. Far better use of screen real estate on PCs.

Lag is still very prevalent though. Page loading, upvote delay. It's frustrating.

Live comments (like on new Reddit) does not seem to be working on 0.18, so I have to manually refresh the page each time. That also resets the comment sort to Hot, causing further annoyance.

[โ€“] BitOneZero@lemmy.world 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€“] ruud@lemmy.world 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€“] PKlempe@lemmy.world 3 points 2 years ago* (last edited 2 years ago)

It seems that I can't log out in my browser. The page simply reloads after clicking the button.

[โ€“] WigglingWalrus@lemmy.world 3 points 2 years ago

Logging in works now! Also got 2FA enabled without issues.

[โ€“] mtnwolf@lemmy.world 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€“] illbit@lemmy.world 3 points 2 years ago

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

[โ€“] ami@lemmy.world 3 points 2 years ago

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

[โ€“] HexesofVexes@lemmy.world 3 points 2 years ago

Thanks for getting the update out!

Definitely weird that it was 1500 instead of some power of 2*100!

Also, when we finally get a 128 thread machine just think of the meme potential!

[โ€“] DSquared@lemmy.world 3 points 2 years ago

Hurray! Works well for me so far.

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