Problem Massive CPU load FTB Unleashed

[draceus]

Hello.

This is a big issue that Im now going to try and explain.

Me and my friend have a server hosted at the popular server provider named Multiplay.
Everything was running smoothly until, well it was not running smoothly anymore.
We started experiencing allot of lag on the server and immediately reported this to our providers which told us there is a constant
100% CPU load, and that's whats most likely the cause of the issue.

So we started asking them what was the problem, and they said this could be a issue with corrupt chunks.
I went ahead and scanned the world for corrupt chunks and found 0.
I also went ahead and downloaded MC world edit and deleted every single chunk except our base , which is not that big... Maybe 30 chunks.

Needless to say that did not solve the problem, the CPU load is still at 100% immediately after starting the server.^

So we went ahead and went to another server provider and bought another server there, same issue.

Right now we are lost for ideas and have no clues what to do in order to save our world, we do not want to start over since we have made allot of progress.

The console is coming up with some warning, but no errors.
Here are 2 examples of the warnings we get:

03:59:08 CONSOLE: [WARNING] EnergyNet.addTileEntity: advsolar.TileEntityUltimateSolarPanel@5b8108dd was added too early, postponing

2013-09-30 01:57:34 [WARNING] [IC2] EnergyNet.addTileEntity: forestry.energy.gadgets.EngineTin@7474649e is already added, aborting

Our server is not a server with massive population or anything like that, it rarely got more then 3 players on at the same time and none of us have any chunkloaders or quarries running right now.


Please help us!

Okay, I have an update.

We just removed all our solar panels, probably around 300 high voltage solar arrays combined (also some advanced hybrid panels) and then restarted the server and the CPU load went down to 40%

WTF?

 

[LordBufu]

I know people say downgrading your IC2 by 1 version solves a lot of problems from EnergyNet related error mssgs, and this might help you solve some of the issues until its patches by the ModPack Team. I havnt tested it yet, but im also experimenting with Unhinged atm, and i have noticed that its running an older IC2 version and it has less issues with EnergyNet related errors. Although i thought i read somewhere that the errors are not a potential issue, i personaly havnt noticed any issues with my test servers despite the EnergyNet errors.

I also noticed that relocating solar arrays might cause the server to hang up in some rare cases, but i have not yet noticed a massive server load increase with solar panels yet. Id suggest trying to downgrade the IC2 mod and see if it helps, it just might do the trick since the solars seems to remove a lot of CPU already.

 

[draceus]

How to we go downgrade our IC2 version ? Will it still work with ftb 1.1.4?

 

[Staxed]

How to we go downgrade our IC2 version ? Will it still work with ftb 1.1.4?

download the previous version, replace the ic2 jar in your mods folder on the server. You will also need to do the same thing for your client as well as all server members need to do the same.

 

[draceus]

Ok, we will try this and get back with the results

 

[adracamas]

Fix it?

 

[Twigleaf]

How much RAM is your server provider setup? I've learned a 6 gig Ram, with a 6 hour maintenence schedule is pretty much needed after your world(s) files get 9-10 gigs. Running MystWorlds, Advaanced Solar, etc. IC2, will spam the console with STDOUT errors, which is a sound generation error ( It my be sound off by default now). you have a lot of dynamic data, such as thaumcraft nodes, thaumic bees, that the server is keeping up with. Java is not the most conservative application for processsor power, but it is also the quality of the modwork. If you are going full out FTB 125 mods, expect to deal with maintenence schedules from memory leaks, RAM, and CPU. I once had an issue with the communicaation between the server and the DATA CENTER they use, so you even have to figure that in.