The bug
The world began lagging a lot after being in the world for only a few minutes (up to 2 tps). Several warnings were getting spammed in chat.
Something's taking too long! 'root.levels.Lag Testing 3.tick.chunkMap' took aprox 175.17683 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick' took aprox 377.796249 ms
Something's taking too long! 'root.levels.Lag Testing 3' took aprox 379.229534 ms
Something's taking too long! 'root.levels' took aprox 380.05798 ms
Something's taking too long! 'root' took aprox 381.170078 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.chunkMap' took aprox 120.998022 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.entities.regular' took aprox 110.506359 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.entities' took aprox 111.198113 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick' took aprox 278.788566 ms
Something's taking too long! 'root.levels.Lag Testing 3' took aprox 280.338789 ms
Something's taking too long! 'root.levels' took aprox 281.087037 ms
Something's taking too long! 'root' took aprox 282.027284 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.tickBlocks.pollingChunks.tickBlocks' took aprox 2000.871902 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.tickBlocks.pollingChunks' took aprox 2003.750324 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.tickBlocks' took aprox 2004.084547 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.chunkMap' took aprox 165.035982 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.entities.regular' took aprox 104.508922 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick.entities' took aprox 105.421911 ms
Something's taking too long! 'root.levels.Lag Testing 3.tick' took aprox 2296.07411 ms
Something's taking too long! 'root.levels.Lag Testing 3' took aprox 2297.31263 ms
Something's taking too long! 'root.levels' took aprox 2297.937618 ms
Something's taking too long! 'root' took aprox 2298.715495 msThis happened even when standing still and not causing any block updates.
How to reproduce
Create a new default world
Wait a few minutes
Run
/debug startAfter a few seconds run
/debug stop
→ The chat says the game is running at about 1-5fpsLook in the game log
→ You should see similar warnings as above
Notes:
This issue is also reproduce-able in superflat worlds, although while the warnings are still showing up, the lag is less significant.
Rejoining the world or reloading the chunks (f3+A) causes the lag to disappear, but only temporary.
Linked issues
is duplicated by 4
relates to 1
Attachments
Comments 14
@all: Stop any discussions about anything not belonging to this bug.
This site is a bug tracker, and it's not of any interest if this issue can be solved by 3rd party software.
O can confirm that this bug is able to be recreated , but only in non superflat terrain. I Think it is closely linked to terrain generation or updating because It doesn't happen in void worlds
Affects 1.13-pre8. I'm pretty sure @unknown is incorrect, or partially, as I keep getting the same errors about "root" and "root.save" taking too long, even on a server.
@Michael Wobst Please reopen this. I'm having significant tps issues without doing anything in the world. Here is a download to a world this is happening in: https://drive.google.com/file/d/1er1yw_d1guh8bnE-gw31l-PRGk8nP_kj/view?usp=sharing
Closed this ticket upon reporter's request.
If you still encounter this or a similar issue, please create a new ticket and include as much information as possible.
@unknown Optifine is a third party software. You can't consider a ticket resolved by forcing a player to use a third party software. If you say you couldn't confirm this, you should use the vanilla client.
Also I doubt changing anything outside of Minecraft would fix this issue because everything works fine in previous version.
@unknown confirmed this bug as well.