Posts by Eogen

Eogen · Dec 12th 2015

Quote from Dr.Terr

Eogen,
I haven't checked stall report, but I will suggest to downgrade java to 1.7 and check if stalls happen, I had funny behavior and many issues on 1.8 oracle java with modded minecraft.

I am going to admit that I was skeptical, but I have not had a stall since downgrading to java-1.7.0-openjdk-1.7.0.91.x86_64. Thanks for the insight.

Eogen · Dec 11th 2015

So I have been working on a private server based on TerraFirmaCraft , and pillaging a bunch of the configuration from the Technofirma pack.

I've run into a situation where the server performance stops and starts, with no errors in console log. I've installed sampler , and opis trying to debug, and sampler is identifying that the server is stalled, and dumping a stall-report every few minutes. I presume its some sort of java lock contention, but I am a perl guy, not a java guy, so a lot of this is voodoo for me.

Is there a guide somewhere on how to understand what I am seeing in the stall report? I have attached a zip file with a few of the stall reports. The small ones are from me pre-generating chunks, and the larger ones are after I log in with a client.

Any pointers are appreciated. Thanks in advance.

Server Details

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Server is CentOS 6.7 on a 4 core Dell Poweredge with 4 cores at 3 Ghz w/ 16 GB memory. Java is java-1.8.0-openjdk-1.8.0.65-0.b17.el6_7.x86_64. I have the world on a ram disk, and there is never less than 4Gb memory available, and os level swapping is not happening.

Startup command is:

Code

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-0.b17.el6_7.x86_64/jre/bin/java -server -Xms2048M -Xmx4096M -XX:+UseParNewGC -XX:SurvivorRatio=2 -XX:+DisableExplicitGC -d64 -XX:+UseConcMarkSweepGC -XX:+AggressiveOpts -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=6 -XX:+UseFastAccessorMethods -Dfastcraft.asm.permissive=true -Dnet.dries007.tfctweaks.asm.disable -jar forge.jar nogui

Forge Version is 7.99.16.1448 for Minecraft 1.7.10
Mods Are:
[1.7.10]TFCAutomatedBellowsAddon-1.02.jar EnchantingPlus-1.7.10-3.0.2-d.jar Opis-1.2.5_1.7.10.jar
[1.7.10][0.79.23+]TFC-Additions-1.0.3.jar [1.7.10]TFCCellarsAddon-1.010.jar Enchiridion 2-1.7.10-2.0.2a.jar parachutemod-1.7.10-2.5.6-01.jar
[1.7.10][1.2] MC+ API.jar [1.7.10]TFCUdaryMod-0.2.28.jar fastcraft-1.22-ctest17.jar PneumaticCraft-1.7.10-1.11.16-138-universal.jar
[1.7.10][1.2] MC+ Cart - v1.3.0.jar AdminCommandsToolbox-0.0.2a_1.7.10.jar fmpintegration-1.2.2-1.7.10.jar PushShove-1.7.10-1.0.jar
[1.7.10][1.2] MC+ Collision - v1.0.0.jar AdventurersAmulets-1.7.10-1.5.0c.jar forgeessentials-1.7.10-1.4.3.1046-server.jar RecurrentComplex-0.9.6.3.jar
[1.7.10][1.2] MC+ DayCounter - v1.1.2.jar Guide-API-1.7.10-1.0.1-20.jar RopeBridge-v1.2-mc1.7.10.jar
[1.7.10][1.2] MC+ GiftBox - v1.2.0.jar BetterFps-1.0.1.jar HerdCraft-1.7.10-1.1.jar RopePlus-1.7.10.jar
[1.7.10][1.2] MC+ Lock - v1.2.2.jar BiblioCraft[v1.11.2][MC1.7.10].jar IGW-Mod-1.7.10-1.1.11-32-universal.jar sampler-1.58.jar
[1.7.10][1.2] MC+ SkullCandle - v1.0.2.jar BiblioWoods[TerraFirmaCraftV0.79.23][v1.2].jar ImmersiveEngineering-0.6.0.jar shipsMod-v1.7.10-1.0.4.jar
[1.7.10][1.2] MC+ Wheel - v1.1.2.jar BlockPhysics-0.9.5.jar InventoryTweaks-1.58-147.jar SpecialAI-1.7.10-1.1.1.jar
[1.7.10] ClothingCraft 1.2.1.jar BloodMagic-1.7.10-1.3.3-35.jar IvToolkit-1.2.jar StalkerCreepers-1.7.10.jar
[1.7.10]Decorations-1.0.20.jar BNBGamingLib-2.2.0.jar MemoryCleaner-1.4-mc.1.7.10.jar TFC-Tweaks-1.7.10-0.3.0.11.jar
[1.7.10]ElectricalAge_BETA-1.9_r47-TFC_r7.jar Carpenter's Blocks v3.3.7 - MC 1.7.10.jar MineTweaker3-1.7.10-3.0.9C.jar Translocator-1.7.10-1.1.2.15-universal.jar
[1.7.10]LeatherWaterSac-3.8.B79.jar Carvable_Pumpkins_Mod.jar MobiusCore-1.2.5_1.7.10.jar waypoints-1.1.1.jar
[1.7.10]Merchants-1.1.3.jar CodeChickenCore-1.7.10-1.0.7.47-universal.jar MobProperties-1.7.10-0.4.0.jar worldedit-forge-mc1.7.10-6.1.1-SNAPSHOT-dist.jar
[1.7.10]Merchants-Containers-1.0.1.jar CraftHeraldry 1.1.3.jar ModTweaker2-0.9.3.jar YeGamolChattels-1.1.2.jar
[1.7.10]TerraFirmaCraft-0.79.25.845.jar custom_modpack-0.0.1 (1).jar Morpheus-1.7.10-1.6.10.jar
[1.7.10]TerraMisc-0.6.8.jar Decocraft-2.2.1_1.7.10.jar NotEnoughItems-1.7.10-1.0.5.111-universal.jar
Baubles-1.7.10-1.0.1.10.jar CodeChickenLib-1.7.10-1.1.3.138-universal.jar ForgeMultipart-1.7.10-1.2.0.345-universal.jar MrTJPCore-1.1.0.31-universal.jar

Posts by Eogen

[WIP|1.7.10] FastCraft 1.25 (Note: All Posts of new Members need to be approved first, so if you press the submit button but no new post appears here, it is in the folder of posts to be approved first, and Player will receive them a few hours later)

[WIP|1.7.10] FastCraft 1.25 (Note: All Posts of new Members need to be approved first, so if you press the submit button but no new post appears here, it is in the folder of posts to be approved first, and Player will receive them a few hours later)