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doctorray117 / minecraft-ondemand

Templates to deploy a serverless Minecraft Server on demand in AWS
Apache License 2.0
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Anyone else experiencing extremely slow chunk loading (Maybe due to EFS?) #26

Open garrettjoecox opened 2 years ago

garrettjoecox commented 2 years ago

I've been tweaking a number of parameters including minecraft version, java flags, data packs, and server specs. All seem to perform worse than what I'm used to for similar server specs in terms of chunk loading (both new and old chunks). I'm wondering if anyone else is experiencing this issue, and if it could perhaps be EFS at fault.

doctorray117 commented 2 years ago

Just to make sure, are you basing anything on yesterday's aws outage? Anything weird that happened yesterday would likely be related to that.

garrettjoecox commented 2 years ago

Na, that definitely did give me some down time, but this was before and after downtime yesterday. It’s not unplayable, but it’s definitely noticeable

garrettjoecox commented 2 years ago

Looks like it might have been a bug in 1.18 rc1, going to try out 1.18 rc2 tonight

Edit: Still having poor performance

Stealthii commented 2 years ago

@garrettjoecox it's also possible that your filesystem's burst credits have accumulated now over time. When I first launched EFS was indeed slow, but now chunk loading is pretty quick!

cggentry115 commented 2 years ago

@Stealthii How long did it take your your loading to speed up? Was there any other issues like low TPS/lag before that happened?

Stealthii commented 2 years ago

@cggentry115 I tell a lie - it seems I was relaying performance of a running server that had clearly cached some loading. On any new task running, heading to/from Nether into unloaded chunks really shows the slow performance (about 8 seconds to load all chunks before transition)

garrettjoecox commented 2 years ago

Perhaps someone more familiar with the tools being used could try something like:

before the server starts up, copy the world directory to the local filesystem Spin up the server with the world on the local filesystem On server close, overwrite world directory on mounted EFS with the newer copy in the local filesystem.

This might help verify if it is indeed an EFS issue

garrettjoecox commented 2 years ago

With the above setup you'd likely be able to ditch EFS all-together and use S3 instead...