Client freezes for minutes when playing on a server with c2me

[Cloudperry]

When using c2me on a client and a server, repeatedly going through nether portals freezes the game for a long time. This doesn't happen when playing single player on the client's internal server. Haven't tested yet if this happens with c2me and no other mods. I have tested this with a build from github actions and with the latest jar from modrinth. The client freezes for 6 minutes as can be seen from the gap in the timestamps in the log.

Mod list

[19:07:04] [main/INFO]: Loading 146 mods:
	- advanced_runtime_resource_pack 0.5.4
	- advancementinfo 1.18-fabric0.43.1-1.3
	- animatica 0.2+1.18
	- antighost 1.18-fabric0.43.1-1.1.4
	- architectury 3.3.5
	- autoconfig1u 3.3.1 via image2map
	- bettermounthud 1.1.3
	- bettersafebed 1.18-fabric-a
	- blue_endless_jankson 1.2.1 via kyrptconfig
	- brb 1.5.6
	- c2me 0.2.0+alpha.5.106
	- capes 1.2.2+1.18
	- carpet 1.4.56
	- carpet-autocraftingtable 1.4.56
	- carpet-extra 1.4.56
	- cem 0.7.0
	- citresewn 0.8.1-1.18
	- cloth-api 2.0.54
	- cloth-basic-math 0.6.0 via cloth-config
	- cloth-client-events-v0 2.0.54 via cloth-api
	- cloth-common-events-v1 2.0.54 via cloth-api
	- cloth-config 6.1.48
	- cloth-datagen-api-v1 2.0.54 via cloth-api
	- cloth-scissors-api-v1 2.0.54 via cloth-api
	- cloth-utils-v1 2.0.54 via cloth-api
	- colormatic 2.4.0+mc.1.18
	- com_github_meteordevelopment_starscript 0.1.5 via respackopts
	- com_moandjiezana_toml_toml4j 0.7.2 via dynamicfps
	- com_velocitypowered_velocity-native 1.1.0-SNAPSHOT via krypton
	- commandaliases 0.5.0
	- connected-doors 1.1+1.18
	- continuity 1.0.3+1.18
	- crowdin-translate 1.4+1.18 via antighost
	- cullleaves 2.3.2
	- dcch 2.0+1.17
	- dynamicfps 2.0.6
	- elativitymc_c2me-fabric_ver_1_18_libs_ 0.2.0+alpha.5.106 via c2me
	- enhancedblockentities 0.5+1.18
	- entityculling 1.3.3
	- fabric 0.45.0+1.18
	- fabric-api-base 0.4.1+b4f4f6cd14 via citresewn
	- fabric-api-lookup-api-v1 1.5.0+17be577f65 via fabric
	- fabric-biome-api-v1 6.0.1+ded849a965 via fabric
	- fabric-blockrenderlayer-v1 1.1.9+3ac43d9565 via fabric
	- fabric-command-api-v1 1.1.6+3ac43d9514 via citresewn
	- fabric-commands-v0 0.2.5+b4f4f6cd65 via fabric
	- fabric-containers-v0 0.1.18+d154e2c665 via fabric
	- fabric-content-registries-v0 0.4.5+6f53a73d65 via fabric
	- fabric-crash-report-info-v1 0.1.8+3ac43d9565 via fabric
	- fabric-dimensions-v1 2.1.7+43d2957165 via fabric
	- fabric-entity-events-v1 1.4.5+6b21378a65 via fabric
	- fabric-events-interaction-v0 0.4.16+bfa23f1765 via fabric
	- fabric-events-lifecycle-v0 0.2.6+b4f4f6cd65 via fabric
	- fabric-game-rule-api-v1 1.0.10+3ac43d9565 via fabric
	- fabric-item-api-v1 1.3.0+691a79b565 via fabric
	- fabric-item-groups-v0 0.3.3+3ac43d9565 via fabric
	- fabric-key-binding-api-v1 1.0.8+c8aba2f365 via fabric
	- fabric-keybindings-v0 0.2.6+b4f4f6cd65 via fabric
	- fabric-language-kotlin 1.7.1+kotlin.1.6.10
	- fabric-lifecycle-events-v1 1.4.10+c15ca33565 via fabric
	- fabric-loot-tables-v1 1.0.8+3ac43d9565 via fabric
	- fabric-mining-level-api-v1 1.0.3+3ac43d9565 via fabric
	- fabric-mining-levels-v0 0.1.7+b4f4f6cd65 via fabric
	- fabric-models-v0 0.3.3+3ac43d9565 via fabric
	- fabric-networking-api-v1 1.0.18+3ac43d9565 via fabric
	- fabric-networking-v0 0.3.5+b4f4f6cd65 via fabric
	- fabric-object-builder-api-v1 1.11.0+3b82842e65 via fabric
	- fabric-object-builders-v0 0.7.8+3ac43d9565 via fabric
	- fabric-particles-v1 0.2.9+526dc1ac65 via fabric
	- fabric-registry-sync-v0 0.8.6+533be9ba65 via fabric
	- fabric-renderer-api-v1 0.4.9+3ac43d9565 via fabric
	- fabric-renderer-indigo 0.4.12+3ac43d9565 via fabric
	- fabric-renderer-registries-v1 3.2.7+b4f4f6cd65 via fabric
	- fabric-rendering-data-attachment-v1 0.3.4+7242e9d765 via fabric
	- fabric-rendering-fluids-v1 0.1.18+3ac43d9565 via fabric
	- fabric-rendering-v0 1.1.9+b4f4f6cd65 via fabric
	- fabric-rendering-v1 1.10.3+6b21378a65 via fabric
	- fabric-resource-loader-v0 0.4.11+3ac43d9514 via malilib
	- fabric-screen-api-v1 1.0.7+3ac43d9565 via fabric
	- fabric-screen-handler-api-v1 1.1.11+3ac43d9565 via fabric
	- fabric-structure-api-v1 2.0.8+295197a765 via fabric
	- fabric-tag-extensions-v0 1.2.5+3ac43d9565 via fabric
	- fabric-textures-v0 1.0.9+3ac43d9565 via fabric
	- fabric-tool-attribute-api-v1 1.3.4+7de09f5565 via fabric
	- fabric-transfer-api-v1 1.5.6+b4f4f6cd65 via fabric
	- fabricloader 0.12.12
	- fabrishot 1.6.0
	- ferritecore 4.0.0
	- image2map 0.2.2
	- indium 1.0.2-alpha1+mc1.18
	- inspecio 1.1.0+1.17
	- inventorysorter 1.8.1-1.18
	- iris 1.1.4-starline+build.672
	- itemmodelfix 1.0.3+1.18
	- java 17
	- krypton 0.1.6
	- kyrptconfig 1.2.5-1.18 via inventorysorter
	- lambdabettergrass 1.2.2+1.17
	- lambdynlights 2.1.0+1.17
	- lazydfu 0.1.2
	- libjf-base 2.2.0 via respackopts
	- libjf-data-manipulation-v0 2.2.0 via respackopts
	- libjf-unsafe-v0 2.2.0 via respackopts
	- litematica 0.9.0
	- lithium 0.7.6
	- malilib 0.10.0-dev.26
	- midnightlib 0.2.9 via cullleaves
	- minecraft 1.18.1
	- minihud 0.19.0-dev.20211204.230657
	- mm 2.1 via slight-gui-modifications
	- modmenu 3.0.1
	- morechathistory 1.1.0
	- no-telemetry 1.3.0
	- notenoughanimations 1.4.0
	- org_anarres_jcpp 1.4.14 via iris
	- org_codehaus_groovy_groovy 3.0.8 via slight-gui-modifications
	- org_codehaus_groovy_groovy-jsr223 3.0.8 via slight-gui-modifications
	- org_jetbrains_kotlin_kotlin-reflect 1.6.10 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib 1.6.10 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib-jdk7 1.6.10 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib-jdk8 1.6.10 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm 1.5.2 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-coroutines-jdk8 1.5.2 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm 1.3.1 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-core-jvm 1.3.1 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-json-jvm 1.3.1 via fabric-language-kotlin
	- org_joml_joml 1.10.2 via sodium
	- org_slf4j_slf4j-api 1.7.12 via iris
	- pinglist 1.3.3
	- pride 1.1.0+1.17 via lambdynlights
	- rebind_all_the_keys 1.1.1+1.18
	- reeses-sodium-options 1.2.4
	- respackopts 2.9.0
	- slight-gui-modifications 2.0.2
	- sodium 0.4.0-alpha5+build.816
	- sodium-extra 0.3.7
	- sound_physics_remastered 1.18.1-1.0.3
	- spruceui 3.3.2+1.17 via lambdabettergrass
	- starlight 1.0.0+fabric.d0a3220
	- syncmatica 0.2.6
	- tooltipfix 1.0.4-1.18
	- tweakeroo 0.11.0
	- wi_zoom 1.3-MC1.18.1
	- xaerominimap 21.23.0
	- xaeroworldmap 1.19.0
	- yosbr 0.1.1

Client log

[19:13:20] [Render thread/INFO]: Connecting to 127.0.0.1, 25565
[19:13:21] [Render thread/INFO]: [STDOUT]: New minimap session initialized!
[19:13:21] [Render thread/INFO]: [STDOUT]: New world map session initialized!
[19:13:21] [Render thread/INFO]: Started 6 worker threads
[19:13:21] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:13:21] [Render thread/INFO]: Destroying pipeline OVERWORLD
[19:13:21] [Render thread/INFO]: Using 3 total BufferBuilder caches
[19:13:22] [Render thread/INFO]: Creating pipeline for dimension OVERWORLD
[19:13:22] [Netty Epoll Client IO #0/INFO]: Joined carpet server with matching carpet version
[19:13:22] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:overworld]
[19:13:22] [Render thread/INFO]: Loaded 618 advancements
[19:13:22] [Render thread/INFO]: Joining syncmatica server with local version 0.2.6 and server version 0.2.6
[19:14:45] [Render thread/INFO]: Stopping worker threads
[19:14:45] [Render thread/INFO]: Started 6 worker threads
[19:14:45] [Render thread/INFO]: Stopping worker threads
[19:14:45] [Render thread/INFO]: Started 6 worker threads
[19:14:45] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:14:45] [Render thread/INFO]: Destroying pipeline OVERWORLD
[19:14:46] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:the_nether]
[19:14:46] [Render thread/WARN]: Received passengers for unknown entity
[19:14:46] [Render thread/INFO]: Creating pipeline for dimension NETHER
[19:14:47] [Render thread/WARN]: Received passengers for unknown entity
[19:14:53] [Render thread/INFO]: Stopping worker threads
[19:14:53] [Render thread/INFO]: Started 6 worker threads
[19:14:53] [Render thread/INFO]: Stopping worker threads
[19:14:53] [Render thread/INFO]: Started 6 worker threads
[19:14:53] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:14:53] [Render thread/INFO]: Destroying pipeline NETHER
[19:14:54] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:overworld]
[19:14:55] [Render thread/INFO]: Creating pipeline for dimension OVERWORLD
[19:14:58] [Render thread/WARN]: Received passengers for unknown entity
[19:15:10] [Render thread/INFO]: Stopping worker threads
[19:15:10] [Render thread/INFO]: Started 6 worker threads
[19:15:10] [Render thread/INFO]: Stopping worker threads
[19:15:10] [Render thread/INFO]: Started 6 worker threads
[19:15:10] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:15:10] [Render thread/INFO]: Destroying pipeline OVERWORLD
[19:15:11] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:the_nether]
[19:15:11] [Render thread/WARN]: Received passengers for unknown entity
[19:15:11] [Render thread/WARN]: Received passengers for unknown entity
[19:15:11] [Render thread/INFO]: Creating pipeline for dimension NETHER
[19:15:16] [Render thread/WARN]: Received passengers for unknown entity
[19:15:22] [Render thread/INFO]: Stopping worker threads
[19:15:22] [Render thread/INFO]: Started 6 worker threads
[19:15:22] [Render thread/INFO]: Stopping worker threads
[19:15:22] [Render thread/INFO]: Started 6 worker threads
[19:15:22] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:15:22] [Render thread/INFO]: Destroying pipeline NETHER
[19:15:23] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:overworld]
[19:15:23] [Render thread/INFO]: Creating pipeline for dimension OVERWORLD
[19:15:27] [Render thread/WARN]: Received passengers for unknown entity
[19:15:38] [Render thread/INFO]: Stopping worker threads
[19:15:38] [Render thread/INFO]: Started 6 worker threads
[19:15:38] [Render thread/INFO]: Stopping worker threads
[19:15:38] [Render thread/INFO]: Started 6 worker threads
[19:15:38] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:15:38] [Render thread/INFO]: Destroying pipeline OVERWORLD
[19:15:39] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:the_nether]
[19:15:39] [Render thread/WARN]: Received passengers for unknown entity
[19:15:39] [Render thread/WARN]: Received passengers for unknown entity
[19:15:39] [Render thread/INFO]: Creating pipeline for dimension NETHER
[19:15:49] [Render thread/INFO]: Stopping worker threads
[19:15:49] [Render thread/INFO]: Started 6 worker threads
[19:15:49] [Render thread/INFO]: Stopping worker threads
[19:15:49] [Render thread/INFO]: Started 6 worker threads
[19:15:49] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:15:49] [Render thread/INFO]: Destroying pipeline NETHER
[19:15:50] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:overworld]
[19:15:50] [Render thread/INFO]: Creating pipeline for dimension OVERWORLD
[19:15:54] [Render thread/WARN]: Received passengers for unknown entity
[19:16:08] [Render thread/INFO]: Stopping worker threads
[19:16:08] [Render thread/INFO]: Started 6 worker threads
[19:16:09] [Render thread/INFO]: Stopping worker threads
[19:16:09] [Render thread/INFO]: Started 6 worker threads
[19:16:09] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:16:09] [Render thread/INFO]: Destroying pipeline OVERWORLD
[19:16:09] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:the_nether]
[19:16:09] [Render thread/WARN]: Received passengers for unknown entity
[19:16:10] [Render thread/WARN]: Received passengers for unknown entity
[19:16:10] [Render thread/INFO]: Creating pipeline for dimension NETHER
[19:16:18] [Render thread/INFO]: Stopping worker threads
[19:16:18] [Render thread/INFO]: Started 6 worker threads
[19:16:18] [Render thread/INFO]: Stopping worker threads
[19:16:18] [Render thread/INFO]: Started 6 worker threads
[19:16:18] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[19:16:18] [Render thread/INFO]: Destroying pipeline NETHER
[19:16:19] [Render thread/INFO]: [STDOUT]: Minimap updated server level id: -467313767 for world ResourceKey[minecraft:dimension / minecraft:overworld]
[19:16:19] [Render thread/INFO]: Creating pipeline for dimension OVERWORLD
[19:16:24] [Render thread/WARN]: Received passengers for unknown entity
[19:21:28] [Render thread/INFO]: [STDOUT]: Minimap session finalized.
[19:21:28] [Render thread/INFO]: [STDOUT]: Finalizing world map session...
[19:22:05] [Thread-9/INFO]: [STDOUT]: World map force-cleaned!
[19:22:05] [Render thread/INFO]: [STDOUT]: World map session finalized.
[19:22:07] [Render thread/INFO]: Stopping worker threads

[ishland]

I cannot reproduce this issue after going to and from the nether at least 40 times.

[Cloudperry]

Hmm. I can't reproduce this issue when using latest sodium and c2me together on a c2me server. I could get it to happen when running a sodium client without c2me on a c2me server though. Also worth noting is that I get a lot worse lag on dimension change with c2me and sodium both installed.

Sodium only:

Sodium and C2me:

These screenshots are both taken just after coming from the nether to the overworld, and in both cases I was spamming dimension changes for a while before the screenshots. The C2me SS has C2me on client and server and the Sodium one doesn't have C2me at all.

Setup:
CPU: Ryzen 3600
GPU: RX Vega 56
RAM: 32 Gb 3200 Mhz Cl 16
Storage: 512 Gb nvme ssd (both server and client are on it)
Server jvm arguments: -Xmx10G -XX:+UseShenandoahGC
Client jvm arguments: -Xmx4G -XX:+UseShenandoahGC

[Eidigii]

I think this might be related:

[10384.849s][warning][gc,alloc] Server thread: Retried waiting for GCLocker too often allocating 524288 words
[10384.849s][warning][gc,alloc] C2ME worker #1: Retried waiting for GCLocker too often allocating 524288 words
[10384.849s][warning][gc,alloc] C2ME worker #5: Retried waiting for GCLocker too often allocating 390367 words
[10384.856s][warning][gc,alloc] C2ME worker #3: Retried waiting for GCLocker too often allocating 352827 words
[10384.857s][warning][gc,alloc] C2ME worker #7: Retried waiting for GCLocker too often allocating 452857 words
[10394.571s][warning][gc,alloc] C2ME worker #6: Retried waiting for GCLocker too often allocating 256 words
[10395.989s][warning][gc,alloc] C2ME worker #5: Retried waiting for GCLocker too often allocating 256 words
[10395.989s][warning][gc,alloc] C2ME worker #8: Retried waiting for GCLocker too often allocating 256 words
[10395.989s][warning][gc,alloc] C2ME worker #4: Retried waiting for GCLocker too often allocating 256 words
[10413.948s][warning][gc,alloc] C2ME worker #8: Retried waiting for GCLocker too often allocating 449277 words
[10413.948s][warning][gc,alloc] Server thread: Retried waiting for GCLocker too often allocating 524288 words
[10413.955s][warning][gc,alloc] C2ME worker #5: Retried waiting for GCLocker too often allocating 390367 words
[10413.955s][warning][gc,alloc] C2ME worker #2: Retried waiting for GCLocker too often allocating 399067 words

happens randomly for me when exploring. CPU cores get hammered and server timeouts all players.

using: c2me-fabric-mc1.18.1-0.2.0+alpha.6.25-all.jar