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 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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[–] hydra@lemmy.world 3 points 2 years ago

Seems to work good enough!

[–] srasmus@lemmy.world 3 points 2 years ago

Excellent work!

[–] 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.

[–] 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.

[–] DigitalPortkey@lemmy.world 3 points 2 years ago

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

[–] ChriskiV@lemmy.world 3 points 2 years ago

Signed into Jerboa! Thanks devs!

[–] Jaiden@lemmy.world 3 points 2 years ago

testing from jerboa

[–] 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.

[–] Olap@lemmy.world 3 points 2 years ago

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

[–] Olap@lemmy.world 3 points 2 years ago

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

[–] Guster@lemmy.world 3 points 2 years ago

Nice work :)

[–] AlmightySnoo@lemmy.world 2 points 2 years ago

lemmy.world finally fast as fuck and the login form seems to work again, thanks for all your hard work!

[–] MrPommeroy@lemmy.world 2 points 2 years ago

Thanks for all the hard work and documentation!

[–] FinalBoy1975@lemmy.world 2 points 2 years ago (2 children)

You know, this is a nice post because now I understand what was happening to me as a user. Thanks for confirming that I am not insane! Well, maybe I'm insane, but what I was trying to do and couldn't was real, not something I was doing wrong. Also, thanks for updating the stuff that makes it work.

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Does browsing with Incognito/Private mode opens up new bugs, or does the refreshing thing kept the same principle? I should be stayed as logged on, but for some reason - after this update - whenever I open a new private tab from the tab I'm logged on I am indicated as not logged in.

[–] thisisdee@lemmy.world 2 points 2 years ago

Thanks for all your work! Love the new look and it’s working great now

[–] not_neno@lemmy.world 2 points 2 years ago

Waiting for the part where this instance moves to a k8s cluster

[–] Anaralah_Belore223@lemmy.world 2 points 2 years ago* (last edited 2 years ago) (2 children)

Comment testing on lemmy.world

Why posting/commenting on other communities = blazing fast, while here = takes about 3 to 8 seconds? Is it just me?

load more comments (2 replies)
[–] thaedrus@lemmy.world 2 points 2 years ago

Looks like everything is working well so far. Browsing from Wefwef and Liftoff.

Thank you!

[–] kratoz29@lemmy.world 2 points 2 years ago

Seems that sometimes the hot algorithm gets messed up :/

[–] Dude1324@lemmy.world 2 points 2 years ago

❀️

[–] Sigmatics@lemmy.world 2 points 2 years ago

Still seeing a lot of 504s, and this is at a time where the site shouldn't be super busy

[–] pickledredonions@lemmy.world 2 points 2 years ago

Thank you so much!

[–] solongaphasia@lemmy.world 2 points 2 years ago

thank you for all you’re doing on this. godspeed

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