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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[–] Marxine@lemmy.world 13 points 2 years ago

Thanks a bunch for your hard work, Ruud and other admin folks! It's so damn GOOD to be able to use Jerboa again!

Also, it's really nice to see the breakdown of your work, helps a lot in understanding what you go through and maybe even of there's anything we can help with. Keep it up!

[–] collin@lemmy.world 12 points 2 years ago
[–] Squorlple@lemmy.world 12 points 2 years ago* (last edited 2 years ago) (2 children)

I'm one of the many who have had trouble logging in, and this issue is surely underreported as those affected generally aren't able to report it. It also seems like I'm not able to upvote or downvote. I'll update with any more issues that I come across but I only just now became able to log-in after a long wait and several different browsers.

Edit: it seems like I can successfully upvote/downvote, but the updated vote count and my blue/red arrow only show after refreshing the page. Thanks for all the work you put into this instance btw

Edit 2: All problems seem to have resolved now

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[–] ekZepp@lemmy.world 11 points 2 years ago
[–] AnotherKB@lemmy.world 11 points 2 years ago

Thank you Ruud and those who helped to make it happen!

[–] Pilkitonion@lemmy.world 11 points 2 years ago

Fantastic work!

[–] woelkchen@lemmy.world 11 points 2 years ago (5 children)

Thanks. Made a one-time 50€ contribution and started monthly payments as well. Hopefully this can help fund a server upgrade.

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[–] darkbaron202@lemmy.world 11 points 2 years ago

thank you for letting us know behind-the-scene stuffs.

me myself is a sysadmin and really like story of successfully scaling up servers. very satisfy to hear.

once again, thank you!

[–] CapeData@lemmy.world 10 points 2 years ago

Is anyone else seeing duplicate and triplicate posts on the feed?

[–] kuroshi@lemmy.ramble.moe 10 points 2 years ago

I may not be a user on your instance, but either way, thanks for the upgrade. I was noticing a lot of issues with federation from lemmy.world, and it seems like this upgrade more-or-less fixed them.

I'm just running a tiny, single-user instance, but I want you to know that I appreciate the work you're putting in! I run large-scale infra as my day job, so I understand how challenging this sudden influx of users (and federated servers!) is.

[–] downpunxx@lemmy.world 10 points 2 years ago (1 children)

Is up/down voting not working for anyone else, or is it just me?

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[–] charlieleunicorne@lemmy.world 10 points 2 years ago

Thank you! I can finally log into jerboa now, much appreciated for your hard work

[–] OngoGablogian@sh.itjust.works 10 points 2 years ago (1 children)

I am having some issues logging in to my lemmy.world account atm, just a heads up. I'm sure you folks are slammed right now, thanks for all the work you're doing!

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[–] dingdong@lemmy.world 9 points 2 years ago (2 children)
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[–] vintprox@lemmy.world 9 points 2 years ago* (last edited 2 years ago)

Everything was loading so slow 2 hours ago. Hope it will get better from there.

Edit: When I press "Post", it doesn't respond very long time, but reloading page helps.

[–] tmpod@lemmy.pt 9 points 2 years ago (2 children)

Awesome work!

I'd like to know more about the exact container topology you have, since I may try something similar on my instance as well.
Is it something like this?

β”Œβ”€β”€β”€β”       β”Œβ”€β”€β”€β”
β”‚WEBβ”‚       β”‚WEBβ”‚
β””β”€β”¬β”€β”˜       β””β”€β”¬β”€β”˜
β”Œβ”€β”΄β”€β” β”Œβ”€β”€β”€β” β”Œβ”€β”΄β”€β”
β”‚BE β”œβ”€β”€IMGβ”œβ”€β”€BE β”‚
β””β”€β”¬β”€β”˜ β”œβ”€β”€β”€β”€ β””β”€β”¬β”€β”˜
  └────DB β”œβ”€β”€β”€β”˜  
      β””β”€β”€β”€β”˜      

Thank you! :3

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[–] impulse@lemmy.world 9 points 2 years ago

Thank you for your effort in running this instance and also for being so transparent about the whole process.

[–] computabloke@lemmy.world 9 points 2 years ago* (last edited 2 years ago)

Amazing work. Thankyou :)

Jerboa 0.0.37 now working fine for me, been hanging out to update.

Really appreciate the transparent communications.

Thank you for everything you are doing to update the community and make this space better for everyone!

[–] ren@lemmy.world 9 points 2 years ago

Real challenging this morning posting and commenting. Circle of death waiting for something to post. Then getting multiple posts if it does go through.

Still early days y’all.

[–] Merulox@lemmy.world 9 points 2 years ago (3 children)

Profile pictures on user profiles are still stretched, and now the upvote arrows doesn't turn blue until you refresh the page when you press it

Other than that, this is a fantastic design update

[–] AlmightySnoo@lemmy.world 9 points 2 years ago* (last edited 2 years ago) (1 children)

upvote arrows do turn blue but it's just that they're taking a few seconds before they're refreshed

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[–] Sabzhero@lemmy.world 8 points 2 years ago

Great work on moving away from the websockets

[–] MyOpinion@lemmy.world 8 points 2 years ago (5 children)

It has been near unusable since the upgrade.

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[–] Fluwunator@lemmy.world 7 points 2 years ago

Loving lemmy more and more!

Just so refreshing getting this much transparency.

[–] kuneho@lemmy.world 7 points 2 years ago

The instance just got so much more faster and stable, it's amazing. Keep up the good work!

[–] ArgonautVehicle@lemmy.world 7 points 2 years ago* (last edited 2 years ago)

Favicon seems to be missing now. Just a heads up! @ruud@lemmy.world

[–] obinice@lemmy.world 7 points 2 years ago

Thank you from England for all the hard work AND for giving such interesting details, especially as it will encourage others to set up their own instances, and help them cross similar hurdles!!

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