I’m trying to fix this annoying slowness when posting to larger communities. (Just try replying here…) I’ll be doing some restarts of the docker stack and nginx.
Sorry for the inconvenience.
Edit: Well I’ve changed the nginx from running in a docker container to running on the host, but that hasn’t solved the posting slowness…
Since I have you here, if I start my own instance do I absolutely have to use docker? I’ve never had good experiences with it and would rather just install programs the old-fashioned way
There is a how-to on how to set up your own instance without docker using ansible: https://join-lemmy.org/docs/en/administration/install_ansible.html
Note that this is just basically a script to deploy lemmy on a remote server. And it uses docker. It just does it for you. (Mostly)
Docker is not necessary, lemm.ee for example is running without docker!
Here is documentation for setting it up: https://join-lemmy.org/docs/en/administration/from_scratch.html
Of course you can fully adapt it to your own use case. The Lemmy backend is a single binary, you don’t even need to build it on the same machine which will run it. There’s no hard requirement to use nginx or anything like that either - if you understand what this guide is doing, you can replace all the unimportant parts as needed.
Thanks for your work on this server!
2 restarts done already :-)
Hmm. I guess the delay in posting is not related to nginx. I now have the same conf as a server that doesn’t have this issue.
Any progress on this. I’ve been thinking about it too. Couple of ideas:
Too many indexes needing to update when an insert occurs?
Are there any triggers running upon insert?
Unlikely but there isn’t a disk write bottleneck? Might be worth running some benchmarks from the VM shell.
I was thinking that as well, it’s like the post gets “checked” or something like that and that gives a timeout of 20secs. It could be an api or database but somehow my spidey sense says this could well be in code. Some extra calls to filter things maybe? Using an external server? Or even the propagation to the others? (Idk how this federation thing connects to the others, could be just that; maybe another server that is the bottleneck) I just found the 20 seconds suspicious given that is the default timeout
Hehe, the joys of troubleshooting and profiling. Isn’t it fun?
You got this. <3
I don’t have experience scaling Lemmy, but I do have experience scaling stuff in general. I’m sure you’ve got a few people here who’d be willing to talk things through with you if you get too frustrated.
And don’t forget to breathe and step back if you have to. Your well being is more important.
