NuclearCraft

NuclearCraft

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High CPU load and chunk updates in empty world

456Xander opened this issue · 10 comments

commented

I'm currently playing a Modpack with 80 Mods and wanted to put NC in it. But as soon as I install it and create a new world I get lower FPS than usual an there are always about 10-20 chunk update although I did'nt move for 10 minutes. It also creates very high CPU load of about 70-80% all the Time, without NC it was at constant 30%.

commented

I'll probably close this now, as players are starting to move to 1.10.2 and above - hopefully we won't have the same issues arising there.

commented

Which mods do you have installed? If you didn't actually use anything from NC, the only possibility is a nasty interaction between NC and another mod.

commented

This are the Mods I have installed
ModList.txt

commented

Thanks. Well, I was hoping for Mekanism or Mystcraft, as others have reported issues related to them, but it seems there's something else going on.
Which version of NC do you have installed, and do you get the same lag if only NC is installed?

commented

I have NC 1.8b installed, and without all the other mods the lag isn't there but there is also the same ammount of chunk updates and the cpu is at 30% instead of 20% without any mods.

commented

Which version of Java do you have installed?

commented

Java 8u60

Am 26.07.2016 16:23 schrieb "turbodiesel4598" [email protected]:

Which version of Java do you have installed?


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commented

Hmm - I could actually recreate this with Java 7u71, but since updating to Java 8u101, I have not been able to.
Unfortunately, just like all of these types of bugs, it's probably a certain combo of mods causing the issue, and finding that combo can be incredibly time consuming. It's basically up to you whether you want to try to find which mod is conflicting with NC, or just not use NC.
Hopefully these sort of bugs will not be so prevalent in MC 1.10.

commented

Well, I'll be honest and say that I don't really know what issue this is telling us is happening.
Have you seen what happens with a vanilla install and then an install with only NC and nothing else?

commented

Ok, I profiled my Modpack one time with and one time without NC. There where some really weird things. First, with NC Garbage Collections took about 500ms each instead of 80ms without it and where more Frequent. Second, with NC there where actually Old Generation GC, without NC the Old Gen had a constant 600MB size. And I found a really weird thing when building a reactor. There where Many Objects in Old Space for the next 15 seconds and GC took 5 seconds to clear up.
2016-08-13_12h48_15
This is a graph of the Memory Usage shortly after I built the Reactor. I also noticed severe Slowdowns when building a Reactor but couldn't reproduce that.