First Crash

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Djinni

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Jul 29, 2019
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Just thought I'd let everyone know that after 2 days I just got my first server crash running the FTB one click install.

http://pastebin.com/AP2Ekfej

This is running the CreeperHost VPS Slime package. With no additional software installs beyond the default.

The reason appears pretty simple, (Out of Memory)

Additional Info:
There were 2 players online out of a maximum 10 (although only 6 people are whitelisted)

I do have 2 "extra mods" installed server-side:
fihgu's Core Mod(2.0.0)
and fihgu's Teleport Mod(2.0.0)
 
This may not be entirely correct but



it looks like something to do with packethandling in mystcraft
xcompwiz.mystcraft.MystcraftPacketHandler.onPacketData(MystcraftPacketHandler.java:39)
specifically a packet for activating an item
xcompwiz.mystcraft.MPacketActivateItem.activateItem(MPacketActivateItem.java:37)
which appears to be a linking book
xcompwiz.mystcraft.ItemLinking.activate(ItemLinking.java:66)
that's teleporting an entity (obviously)
MystLinkController.teleportEntity(MystLinkController.java:103)
and the entity is a player (obviously)
ic.(PlayerInstance.java:29)
and it crashed while providing or loading chunks
id.f(ChunkProviderServer.java:154)
zn.a(AnvilChunkLoader.java:70)
because it ran out of memory (as you pointed out)
java.lang.OutOfMemoryError: Java heap space

I wrote it with parts of the stack trace so you could see my reasoning. The issue might be a corrupt chunk that a player on your server was traveling to with a linking book so you probably want to ask one of the players online at the time if they had been using a linking book at the time and where they were going. It could also just be that too many chunks were loaded and it ran out of memory. Do you have any sort of chunkloader enabled?
 
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Looks like some pretty sound reasoning and I'm pretty sure someone was using a linking book, since I saw them spawn in about 100 of them :)

However without your comments, I'd only understand about 3 lines of that :)

And no, apart from the extra 2 mods I mentioned the server is pretty much in an as provided state from the CreeperHost one-click install. None of the players had been on long enough to craft a chunk loader, and I didn't see one get spawned in.
 
On your server properties page, can you stick the ram allocation to the highest setting, could be the auto-detection isn't running as well as it should be, could be the server start up requires a lot more ram than the auto detection normally uses. If your server does need more ram it'll auto allocate anyway, just the start up seems to be off.
 
I only know what happened I have no idea how to fix it (usually how it is for me :() I have heard from greedseed on his stream that creeperhost can be a bit inconsistent with performance so that may be part of the issue, otherwise I have no idea.
 
I only know what happened I have no idea how to fix it (usually how it is for me :() I have heard from greedseed on his stream that creeperhost can be a bit inconsistent with performance so that may be part of the issue, otherwise I have no idea.
Sometimes the performance on our servers are inconsistent because some of our older nodes are just old. We're replacing every old node that we have since we can afford it, however it wouldn't cause severe issues like that.