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] 3 points 1 year ago

Thank you! I love it here. Sending good vibes

[โ€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

Nice work :)

[โ€“] [email protected] 3 points 1 year ago* (last edited 1 year 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€“] [email protected] 3 points 1 year ago

Fuck yeah upgrade hype

[โ€“] [email protected] 3 points 1 year 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€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

Seems to work good enough!

[โ€“] [email protected] 3 points 1 year ago

Excellent work!

[โ€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year 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 1 year ago* (last edited 1 year 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] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

I really enjoy how lemmy is growing!

[โ€“] [email protected] 3 points 1 year 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 1 year 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 1 year 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€“] [email protected] 3 points 1 year 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 1 year 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 1 year ago

I really enjoy how lemmy is growing!

[โ€“] [email protected] 3 points 1 year ago* (last edited 1 year 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 1 year ago

Looking good ๐Ÿ‘

[โ€“] [email protected] 3 points 1 year ago

Also chipping in to give my appreciation, really enjoying Lemmy through lemmy.world!

[โ€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

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

[โ€“] [email protected] 3 points 1 year ago

Signed into Jerboa! Thanks devs!

[โ€“] [email protected] 3 points 1 year ago

I survived!

[โ€“] [email protected] 3 points 1 year ago

Hurray! Works well for me so far.

[โ€“] [email protected] 3 points 1 year ago

Quick everyone show Appreciation before they notice

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