mojira.dev
MC-236682

Large and continuous lag spikes sometimes occur when loading/reloading into a world in 21w37a

The Bug:

Large and continuous lag spikes sometimes occur when loading/reloading into a world in 21w37a.

This issue did not occur in 1.17.1. This may be quite difficult to reproduce as this does not happen all of the time.

Steps to Reproduce:

  • Create a new world in 21w37a.

  • Exit the world.

  • Join the world again.

  • → ❌  Notice how large and continuous lag spikes sometimes occur when loading/reloading into a world in 21w37a.

Expected Behavior:

The expected behavior would be that no large and continuous lag spikes would sometimes occur when loading/reloading into a world in 21w37a.

Linked issues

Attachments

Comments 12

Avoma

Please note that this isn't the same as MC-236646. This issue (MC-236682) occurs even when not loading chunks.

winauer

Seems like the game is out of available memory (94% in your screenshot) and stalling to wait for the GC. Try allocating more RAM.

ampolive

This might be a separate issue actually. The game is using more RAM than in 1.17.1.

winauer

@ampolive The game needing more RAM is not surprising, it has to hold more block data due to the extended height.

Adrian Östergård

Please attach a performance profile by using the key combination F3+L in the game.

2 more comments
ampolive

Also attached a profile.

Ceresjanin123

This is a duplicate of MC-236665

anthony cicinelli

This appears fixed in 21w38a

[Mod] Neko

@unknown can you confirm this is fixed as well?

Avoma

Hi @unknown. Yes, I'm also able to confirm that this issue has been fixed in 21w38a.

Avoma

(Unassigned)

Confirmed

Important

Performance

21w37a

21w38a

Retrieved