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Wyrenth

[Solved] Certain seeds cause Minecraft to hang while attempting to build terrain.

12 posts in this topic

OS Version: Windows Vista (64-bit)

Java Version: 1.8.0_31 (64-bit)

MC Version: 1.7.10

TFC Version: 0.79.15.538

Forge Version: 10.13.2.1272

 

SSP/SMP: Survival Single Player

 

Name: TFC/Minecraft hangs while attempting to build terrain.

 

Description of issue:

While going through a list of alphabetized four-letter world/seed names (Aeos, Brux, Cion, Deis, etc), I ran into a problem where TFC failed to complete/load one of the seeds, and instead would just hang at "building terrain."  The seed in question is "CION" (all caps, no quotes).  Would like to know if others are experiencing the same issue or can reproduce the hang with that seed (and if not, then my troubleshooting steps will need to shift to look for possible causes outside of TFC/MC).

 

Reproducible with clean configs: YES

Other Mods Installed: NONE

 

Crash Report:

---- Minecraft Crash Report ----// Hey, that tickles! Hehehe!Time: 2/1/15 4:31 AMDescription: Rendering screenjava.lang.OutOfMemoryError: Java heap spaceA detailed walkthrough of the error, its code path and all known details is as follows:----------------------------------------------------------------------------------------- Head --Stacktrace:at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1067)-- Screen render details --Details:Screen name: net.minecraft.client.gui.GuiMainMenuMouse location: Scaled: (178, 47). Absolute: (570, 299)Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2Stacktrace:at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1067)at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:990)at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)at net.minecraft.client.main.Main.main(SourceFile:148)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)at java.lang.reflect.Method.invoke(Unknown Source)at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)at net.minecraft.launchwrapper.Launch.main(Launch.java:28)-- System Details --Details:Minecraft Version: 1.7.10Operating System: Windows Vista (amd64) version 6.0Java Version: 1.8.0_31, Oracle CorporationJava VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle CorporationMemory: 713120 bytes (0 MB) / 1476460544 bytes (1408 MB) up to 1879048192 bytes (1792 MB)JVM Flags: 11 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmn1G -Xms1G -Xmx2G -XX:NewSize=512M -XX:SurvivorRatio=2 -XX:+DisableExplicitGC -XX:ParallelGCThreads=4 -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:+AggressiveOptsAABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedIntCache: cache: 0, tcache: 11, allocated: 0, tallocated: 0FML: MCP v9.05 FML v7.10.85.1272 Minecraft Forge 10.13.2.1272 5 mods loaded, 5 mods activemcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableFML{7.10.85.1272} [Forge Mod Loader] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableForge{10.13.2.1272} [Minecraft Forge] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Availabletfc_coremod{0.79.15} [TFC[coremod]] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Availableterrafirmacraft{0.79.15} [TerraFirmaCraft] (TerraFirmaCraft-0.79.15.538.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableLaunched Version: 1.7.10-Forge10.13.2.1272LWJGL: 2.9.1OpenGL: GeForce GTX 750 Ti/PCIe/SSE2 GL version 4.5.0 NVIDIA 347.25, NVIDIA CorporationGL Caps: Using GL 1.3 multitexturing.Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.Anisotropic filtering is supported and maximum anisotropy is 16.Shaders are available because OpenGL 2.1 is supported.Is Modded: Definitely; Client brand changed to 'fml,forge'Type: Client (map_client.txt)Resource Packs: [Wyrenth Sound Tweaks 1.7.2.zip]Current Language: English (US)Profiler Position: N/A (disabled)Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedAnisotropic Filtering: Off (1)

 

SOLUTION: Allocate more memory to Minecraft using JVM arguments (see posts below). Use load times and F3 to gauge memory usage and avoid high-consumption seeds.

Edited by Wyrenth
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Please do not force close java, and instead let it take it's time to generate the crash report that we need in order to fix such issues.

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I can't reproduce this. A world with the seed CION loads just fine for me.

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Alright, thanks. Everything is a fresh download, too, so kind of odd. I'll kick it some and see if a little percussive maintenance will help it work. Maybe get on reinstalling Windows (I'm way overdue for a fresh OS).  At least I know it's a localized issue now.

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I can't reproduce this. A world with the seed CION loads just fine for me.

 I could reproduce it with same versions (Java, MC, TFC, Forge), just had to reduce memory to 1GB. It seems to be a WorldGenForests recursion peoblem, see first attached crash-log. With 1.5GB I could create the world and start in it, but GC was going like crazy and soon it crashed, second (small) log below.With more memory, 2GB and some other GC tweaks it worked:-d64-client-Xms1536M-Xmx2048M-Xmn512M-XX:+UseConcMarkSweepGC-XX:+CMSIncrementalMode-XX:-UseAdaptiveSizePolicyIt started a bit laggy, with a big lag after 4 minutes or so, fine after another 2 minutes, always exploring around spawn. The GC trace shows that tenured heap went up to 1.5GB (max) when (full) GC tripped in (the big lag after 4 minutes), which reduced the tenured heap back to about 300MB!Here MY crash log for 1GB, lot of repeated/similar lines deleted:

---- Minecraft Crash Report ----// On the bright side, I bought you a teddy bear!Time: 01.02.15 17:37Description: Exception getting block type in worldjava.lang.OutOfMemoryError: Java heap spaceA detailed walkthrough of the error, its code path and all known details is as follows:----------------------------------------------------------------------------------------- Head --Stacktrace:at net.minecraft.world.World.func_147439_a(World.java:351)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13391,149,-8619), Chunk: (at 15,9,5 in 836,-539; contains blocks 13376,0,-8624 to 13391,255,-8609), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)Stacktrace:at net.minecraft.world.World.func_147439_a(World.java:351)at com.bioxx.tfc.WorldGen.Generators.Trees.WorldGenCustomCedarTrees.func_76484_a(WorldGenCustomCedarTrees.java:43)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generateForest(WorldGenForests.java:122)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generate(WorldGenForests.java:60)at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1040)at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)at net.minecraft.world.World.func_72964_e(World.java:419)at net.minecraft.world.World.func_147439_a(World.java:345)at com.bioxx.tfc.WorldGen.Generators.Trees.WorldGenCustomCedarTrees.func_76484_a(WorldGenCustomCedarTrees.java:43)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generateForest(WorldGenForests.java:122)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generate(WorldGenForests.java:60)at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1040)at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)at net.minecraft.world.World.func_72964_e(World.java:419)at net.minecraft.world.World.func_147439_a(World.java:345)at com.bioxx.tfc.WorldGen.Generators.Trees.WorldGenCustomCedarTrees.func_76484_a(WorldGenCustomCedarTrees.java:43)[...]at com.bioxx.tfc.WorldGen.Generators.Trees.WorldGenCustomCedarTrees.func_76484_a(WorldGenCustomCedarTrees.java:43)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generateForest(WorldGenForests.java:122)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generate(WorldGenForests.java:60)at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1040)at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)at net.minecraft.world.World.func_72964_e(World.java:419)at net.minecraft.world.World.func_147439_a(World.java:345)at com.bioxx.tfc.WorldGen.Generators.Trees.WorldGenCustomTallTrees.func_76484_a(WorldGenCustomTallTrees.java:48)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generateForest(WorldGenForests.java:126)at com.bioxx.tfc.WorldGen.Generators.WorldGenForests.generate(WorldGenForests.java:60)at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1050)at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)at net.minecraft.world.World.func_72964_e(World.java:419)at net.minecraft.world.World.func_147439_a(World.java:345)at net.minecraft.world.World.func_147453_f(World.java:3881)at net.minecraft.world.World.func_147455_a(World.java:2603)at net.minecraft.world.chunk.Chunk.func_150806_e(Chunk.java:851)at net.minecraft.world.World.func_147438_o(World.java:2540)at com.bioxx.tfc.Blocks.BlockTerraContainer.func_149749_a(BlockTerraContainer.java:66)at net.minecraft.world.chunk.Chunk.func_150807_a(Chunk.java:600)at net.minecraft.world.World.func_147465_d(World.java:451)at com.bioxx.tfc.WorldGen.Generators.WorldGenMinable.BODgenerateVein(WorldGenMinable.java:311)at com.bioxx.tfc.WorldGen.Generators.WorldGenMinable.createMine(WorldGenMinable.java:113)at com.bioxx.tfc.WorldGen.Generators.WorldGenMinable.generate(WorldGenMinable.java:145)at com.bioxx.tfc.WorldGen.Generators.WorldGenOre.createOreVein(WorldGenOre.java:167)at com.bioxx.tfc.WorldGen.Generators.WorldGenOre.oreMediumVein(WorldGenOre.java:77)at com.bioxx.tfc.WorldGen.Generators.WorldGenOre.generate(WorldGenOre.java:61)at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:106)at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1050)at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)at net.minecraft.world.World.func_72964_e(World.java:419)at net.minecraft.world.World.func_147439_a(World.java:345)at net.minecraft.world.World.func_147453_f(World.java:3881)at net.minecraft.world.World.func_147455_a(World.java:2603)at net.minecraft.world.chunk.Chunk.func_150806_e(Chunk.java:851)at net.minecraft.world.World.func_147438_o(World.java:2540)at com.bioxx.tfc.Blocks.BlockTerraContainer.func_149749_a(BlockTerraContainer.java:66)at net.minecraft.world.chunk.Chunk.func_150807_a(Chunk.java:600)at net.minecraft.world.World.func_147465_d(World.java:451)at com.bioxx.tfc.WorldGen.Generators.WorldGenMinable.BODgenerateVein(WorldGenMinable.java:311)at com.bioxx.tfc.WorldGen.Generators.WorldGenMinable.createMine(WorldGenMinable.java:113)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13394,144,-8609), Chunk: (at 2,9,15 in 837,-539; contains blocks 13392,0,-8624 to 13407,255,-8609), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13407,145,-8602), Chunk: (at 15,9,6 in 837,-538; contains blocks 13392,0,-8608 to 13407,255,-8593), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13424,145,-8593), Chunk: (at 0,9,15 in 839,-538; contains blocks 13424,0,-8608 to 13439,255,-8593), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13424,64,-8579), Chunk: (at 0,4,13 in 839,-537; contains blocks 13424,0,-8592 to 13439,255,-8577), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)-- Requested block coordinates --Details:Found chunk: trueLocation: World: (13418,144,-8577), Chunk: (at 10,9,15 in 838,-537; contains blocks 13408,0,-8592 to 13423,255,-8577), Region: (26,-17; contains chunks 832,-544 to 863,-513, blocks 13312,0,-8704 to 13823,255,-8193)-- Requested block coordinates --[...]-- Requested block coordinates --Details:Found chunk: trueLocation: World: (14190,148,-7696), Chunk: (at 14,9,0 in 886,-481; contains blocks 14176,0,-7696 to 14191,255,-7681), Region: (27,-16; contains chunks 864,-512 to 895,-481, blocks 13824,0,-8192 to 14335,255,-7681)-- System Details --Details:Minecraft Version: 1.7.10Operating System: Windows 7 (amd64) version 6.1Java Version: 1.8.0_31, Oracle CorporationJava VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle CorporationMemory: 10535344 bytes (10 MB) / 1046937600 bytes (998 MB) up to 1046937600 bytes (998 MB)JVM Flags: 10 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1024M -Xmn256M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -XX:+PrintGCDetails -XX:+PrintTenuringDistribution -XX:+PrintGCTimeStamps -Xloggc:gc.logAABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedIntCache: cache: 0, tcache: 13, allocated: 0, tallocated: 0FML: MCP v9.05 FML v7.10.85.1272 Minecraft Forge 10.13.2.1272 5 mods loaded, 5 mods activemcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableFML{7.10.85.1272} [Forge Mod Loader] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableForge{10.13.2.1272} [Minecraft Forge] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Availabletfc_coremod{0.79.15} [TFC[coremod]] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Availableterrafirmacraft{0.79.15} [TerraFirmaCraft] ([1.7.10]TerraFirmaCraft-0.79.15.538.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->AvailableProfiler Position: N/A (disabled)Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedPlayer Count: 0 / 8; []Type: Integrated Server (map_client.txt)Is Modded: Definitely; Client brand changed to 'fml,forge'

Here the whole crash-log when using 1.5GB:

---- Minecraft Crash Report ----// Uh... Did I do that?Time: 02.02.15 13:42Description: Exception in server tick loopjava.lang.OutOfMemoryError: Java heap spaceat net.minecraft.nbt.NBTTagCompound.func_74774_a(SourceFile:60)at com.bioxx.tfc.TileEntities.TEOre.func_145841_b(TEOre.java:47)at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75820_a(AnvilChunkLoader.java:370)at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75816_a(AnvilChunkLoader.java:197)at net.minecraft.world.gen.ChunkProviderServer.func_73242_b(ChunkProviderServer.java:256)at net.minecraft.world.gen.ChunkProviderServer.func_73151_a(ChunkProviderServer.java:302)at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:809)at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:318)at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:569)at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)A detailed walkthrough of the error, its code path and all known details is as follows:----------------------------------------------------------------------------------------- System Details --Details:Minecraft Version: 1.7.10Operating System: Windows 7 (amd64) version 6.1Java Version: 1.8.0_31, Oracle CorporationJava VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle CorporationMemory: 63320 bytes (0 MB) / 1556938752 bytes (1484 MB) up to 1556938752 bytes (1484 MB)JVM Flags: 11 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms1536M -Xmx1536M -Xmn512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -XX:+PrintGCDetails -XX:+PrintTenuringDistribution -XX:+PrintGCTimeStamps -Xloggc:gc.logAABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedIntCache: cache: 0, tcache: 4, allocated: 0, tallocated: 0FML: MCP v9.05 FML v7.10.85.1272 Minecraft Forge 10.13.2.1272 6 mods loaded, 6 mods activemcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->AvailableFML{7.10.85.1272} [Forge Mod Loader] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->AvailableForge{10.13.2.1272} [Minecraft Forge] (forge-1.7.10-10.13.2.1272.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Availabletfc_coremod{0.79.15} [TFC[coremod]] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Availableterrafirmacraft{0.79.15} [TerraFirmaCraft] ([1.7.10]TerraFirmaCraft-0.79.15.538.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->AvailableFastCraft{1.9} [FastCraft] (fastcraft-1.9.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->AvailableProfiler Position: N/A (disabled)Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) usedPlayer Count: 1 / 8; [EntityPlayerMP[''/299, l='CION', x=14385,58, y=144,00, z=-7618,30]]Type: Integrated Server (map_client.txt)Is Modded: Definitely; Client brand changed to 'fml,forge'

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Minecraft uses procedural generation. TFC's forests and veins are very large compared to vanilla ones, which means they require more iterations of the recursive method. There's really very little if anything we can do to fix this other than just reiterate that TFC is much more resource heavy compared to vanilla, and that we strongly suggest you use the latest, 64-bit version of java, allocate at a minimum 1GB of memory, and use GC management whereever possible.

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I thought I had more memory allocated, but I guess not.

 

I tried it on my sister's computer, that worked fine, but I also had a different set of jvm arguments.  Matching them allowed me to get CION working on this computer.

 

However, memory usage seems extraordinarily high, and in my case I was only able to load about 5 chunks before Minecraft stopped generating more.  While moving around, sound kicked off, and when I tried to move past the loaded chunks, it finally started loading more.  Minecraft also took longer than normal to exit to menu.

 

When you speak of GC management, what exactly do you mean? I know you mean garbage collection, but how precisely do you manage it?

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When you speak of GC management, what exactly do you mean? I know you mean garbage collection, but how precisely do you manage it?

 

Use Java 8 instead of Java 7, because they've done a lot with garbage collection. Also make sure you are using the GC JVM arguments properly for your system.

-XX:+DisableExplicitGC -XX:ParallelGCThreads=4 -XX:+UseConcMarkSweepGC

ParallelGCThreads should be set to however many threads your processor can handle. So if you have a standard quad-core, set it to 4. If you have a quad-core that supports multi/hyperthreading, set it to 8, etc.

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This is the list of arguments I'm using:

-Xmn1G -Xms3G -Xmx3G -XX:NewSize=512M -XX:PermSize=128m -XX:MaxPermSize=128m -XX:SurvivorRatio=2 -XX:+DisableExplicitGC -XX:ParallelGCThreads=4 -d64 -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:+AggressiveOpts

My system has an Intel Q9300 (quad-core, 2.5 GHz, no hyperthreading) and 8 GB of RAM.  Look good for that setup?

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You can get rid of the two PermSize arguments. Minecraft ignores them anyways. Other than that it looks alright.

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Alright, thanks. I'll consider this solved, though I'm not sure if there's a lot I can do for memory-consuming seeds like CION other than to avoid using them entirely.

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