version = 3 # (Default: # max( # 1, # min( # if( is_windows, # (cpus / 1.6), # (cpus / 1.3) # ) - if(is_client, 1, 0), # ( ( mem_gb - (if(is_client, 1.0, 0.5)) ) / 0.6 ) # ) # ) # ) # The expression for the default value of global executor parallelism. # This is used when the parallelism isn't overridden. # Available variables: is_windows, is_j9vm, is_client, cpus, mem_gb # defaultGlobalExecutorParallelismExpression = "default" # (Default: 4) Sets the thread priority for worker threads # # References: # - https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/Thread.html#setPriority(int) # threadPoolPriority = "default" # (Default: 12) Configures the parallelism of global executor globalExecutorParallelism = "default" [fixes] # (Default: true) # Whether to disable the shutdown hook of log4j2 on dedicated servers. # Enabling this also makes the JVM exit when the dedicated server is considered fully shut down. # This option have no effect on client-side. # We has historically been doing this, and this config option allows you to disable this behavior. # disableLoggingShutdownHook = "default" # (Default: true) Enforces safe world random access. # This feature detects unsafe off-thread world random access, helping to find the causes # of mysterious "Accessing LegacyRandomSource from multiple threads" crash. # The default behavior is to fail hard when such bad things happens. # Disabling this option will replace this behavior with a warning. # # It is generally not recommended to disable this settings unless you know what you are doing # # enforceSafeWorldRandomAccess = "default" [noTickViewDistance] # (Default: true) Whether to enable no-tick view distance enabled = "default" # (Default: 24) No-tick view distance max concurrent chunk loads # Lower this for a better latency and higher this for a faster loading maxConcurrentChunkLoads = "default" # (Default: true) Whether to use compatibility mode to send chunks # This may fix some mod compatibility issues compatibilityMode = "default" # (Default: true) Enable server-side support for extended render distance protocol (c2me:ext_render_distance_v1) # This allows requesting render distances higher than 127 chunks from the server # # Requires Fabric API (currently available) # enableExtRenderDistanceProtocol = "default" # (Default: false) Whether to ensure correct chunks within normal render distance # This will send chunks twice increasing network load ensureChunkCorrectness = "default" [ioSystem] # (Default: 8192) Soft limit for io worker nbt cache chunkDataCacheSoftLimit = "default" # (Default: 32678) Hard limit for io worker nbt cache chunkDataCacheLimit = "default" # (Default: false) EXPERIMENTAL FEATURE # This replaces the way your chunks are saved. # Please keep regular backups of your world if you are using this feature, # and report any world issues you encounter with this feature to our GitHub. # # Whether to use the fast reduced allocation chunk serializer # (may cause incompatibility with other mods) # gcFreeChunkSerializer = "default" # (Default: true) Whether to use the optimized implementation of IO system replaceImpl = "default" [vanillaWorldGenOptimizations] # (Default: true) Whether to use density function compiler to accelerate world generation # # Density function: https://minecraft.wiki/w/Density_function # # This functionality compiles density functions from world generation # datapacks (including vanilla generation) to JVM bytecode to increase # performance by allowing JVM JIT to better optimize the code # # Currently, all functions provided by vanilla are implemented. # Chunk upgrades from pre-1.18 versions are not implemented and will # fall back to the unoptimized version of density functions. # useDensityFunctionCompiler = "default" # (Default: true) Whether to enable aquifer optimizations to accelerate overworld worldgen # (may cause incompatibility with other mods) optimizeAquifer = "default" # (Default: true) Whether to enable End Biome Cache to accelerate The End worldgen # This is no longer included in lithium-fabric # (may cause incompatibility with other mods) # useEndBiomeCache = "default" # (Default: true) Whether to enable StructureWeightSampler optimizations to accelerate world generation # optimizeStructureWeightSampler = "default" [generalOptimizations] # (Default: 100000) The task interval of mid-tick chunk tasks in nanoseconds (-1 to disable) # Mid-tick chunk tasks is to execute chunk tasks during server tick loop # to speed up chunk loading and generation # This helps chunks loading and generating under high MSPT but may raise # MSPT when chunks are loading or generating # # It is generally not recommended to adjust this value unless you know # what you are doing # # Incompatible with Dimensional Threading (dimthread) # midTickChunkTasksInterval = "default" [generalOptimizations.autoSave] # (Default: ENHANCED) Defines how auto save should be handled # VANILLA: Use vanilla auto-save behavior (auto-save performed every tick during ticking) # ENHANCED: Use C2ME enhanced auto-save (auto-save performed when the server have spare time after ticking) # PERIODIC: Use pre-1.18 vanilla auto-save behavior (auto-save performed every 6000 ticks during ticking) # # Please preserve quotes so this config don't break # mode = "default" [chunkSystem] # (Default: true) Whether to enable async serialization # asyncSerialization = "default" # (Default: false) Whether to recover from errors when loading chunks # This will cause errored chunk to be regenerated entirely, which may cause data loss # Only applies when async chunk loading is enabled # recoverFromErrors = "default" # (Default: true) Whether to allow POIs (Point of Interest) to be unloaded # Unloaded POIs are reloaded on-demand or when the corresponding chunks are loaded again, # which should not cause any behavior change # # Note: # Vanilla never unloads POIs when chunks unload, causing small memory leaks # These leaks adds up and eventually cause issues after generating millions of chunks # in a single world instance # allowPOIUnloading = "default" # (Default: true) This option workarounds MC-276863, a bug that makes mushrooms appear in non-postprocessed chunks # This bug is amplified with notickvd as it exposes non-postprocessed chunks to players # # This should not affect other worldgen behavior and game mechanics in general # suppressGhostMushrooms = "default" # (Default: true) Whether to synchronize the management of player tickets # # In vanilla Minecraft, player tickets are not always removed immediately when players leave an area. # The delay in removal increases with the chunk system’s throughput, but due to vanilla’s typically # slow chunk loading, tickets are almost always removed immediately. However, some contraptions rely # on this immediate removal behavior and tend to be broken with the increased chunk throughput. # Enabling this option synchronizes player ticket handling, making it more predictable and # thus improving compatibility with these contraptions. # syncPlayerTickets = "default" # (Default: true) Whether to turn fluid postprocessing into scheduled tick # # Fluid post-processing is very expensive when loading in new chunks, and this can affect # MSPT significantly. This option delays fluid post-processing to scheduled tick to hopefully # mitigate this issue. # fluidPostProcessingToScheduledTick = "default" # (Default: false) Whether to enable low memory mode # # This will attempt to aggressively unload unneeded chunks, saving memory at the cost of additional # overhead when generating new chunks. # lowMemoryMode = "default"