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Published 20 hours ago • verified publisher icon RelativityMC

Lag spikes caused by GC running are larger when using this mod

Open Pectacular opened this issue 2 years ago • 5 comments

The lag spikes caused by the GC running when using this mod are much larger compared to not using this mod. I compared Sodium + Lithium + Starlight vs Sodium + Lithium + Starlight + C2ME.

Pectacular avatar Feb 21 '22 03:02 Pectacular

This is generally caused by Minecraft itself and gets amplified by multi-threading. We are working on allocations reduction but fixing this issue is counted as an optimization, not a bug fix.

ishland avatar Feb 26 '22 05:02 ishland

Any update on this?

KB-Q avatar Mar 16 '22 12:03 KB-Q

Not to necro a post, but I am able to reproduce this 100% of the time on a raspberry pi 400. The gc spikes cause regular ticks to take 170% to sometimes 1300% of their average usual times.

Which ends up making the server completely unplayable due to the poor hardware, if the only change I make becomes removing this mod, the server never shows overloaded messages.

CozzyBro2 avatar May 02 '23 18:05 CozzyBro2

Unfortunately I may confirm it on 1.19.3 on Radxa Rock 4C+ (with 4GB of RAM). Without C2ME (and with DimThread, and other performance mods such as FerriteCore or Starlight) performance is better - while chunk loading is slower (due to single threaded operation), lag spikes introduced with (I guess GC) are too high for comfortable game.

Aleszp avatar May 02 '23 22:05 Aleszp

This is still being worked on. We are in the process of significantly reducing allocs.

duplexsystem avatar May 03 '23 14:05 duplexsystem