Problem Mindcrack and TPS

[powergitt]

Hey

I've been running a server for quite some while. We recently had a bunch of performance issues on the server. I tried to combat the lag as good as I could, but the tickrate was nowhere near 20.

Today, I got the new hardware for the server, intel 4770k and was hoping for a big boost in performance. The server seems to run fine, but the tickrate is still pritty low, it varies from 12 to 17, not 20.

So my question is, am I doing some fundamentally wrong? There is about 20 players on my server. Some of them are pritty advanced and have a lot of machines.

A little more info on software and hardware:
Intel(R) Core(TM) i7-4770K
16 GB Ram
Ubuntu 13.04 Server (no gui)
Java version: 1.7.0 u21

ServerStart.sh:

Spoiler

java -server -Xmn2G -Xms8G -Xmx14G -XX:NewRatio=2 -XX:CMSFullGCsBeforeCompaction=1 -XX:SoftRefLRUPolicyMSPerMB=2048 -XX:+CMSParallelRemarkEnabled -XX:+UseParNewGC -XX:+DisableExplicitGC -Xnoclassgc -oss4M -ss4M -XX:+UseFastAccessorMethods -XX:CMSInitiatingOccupancyFraction=90 -XX:+UseConcMarkSweepGC -XX:UseSSE=4 -XX:+UseCMSCompactAtFullCollection -XX:ParallelGCThreads=4 -XX:+AggressiveOpts -XX:+UseLargePages -XX:ReservedCodeCacheSize=1G -cp mcpc.jar -jar mcpc.jar

I also tried to install nallars tick profiler to see if there was something spesific, the only thing i can find is the "generic pipe" and straw golem, but I have no idea where they are...

Spoiler

                  Single Entity | Time/Tick |    %
  TileEntityRouter -104,52,-29:0 |    1.307 | 1.450
factory.TilePump -802,97,227:-1 |    1.008 | 1.118
TileLogicPointer 1323,47,-1798:0 |    0.568 | 0.631
factory.TilePump 113,49,-818:-1 |    0.487 | 0.541
TileLogicPointer 563,36,-2176:0 |    0.483 | 0.536
  Chunk | Time/Tick |    %
  -7, -2 |    1.657 | 1.838
79, -119 |    1.435 | 1.593
80, -121 |    1.257 | 1.395
79, -121 |    1.182 | 1.312
78, -119 |    1.114 | 1.237
All Entities of Type | Time/Tick |    %
    TileGenericPipe |    8.435 | 9.360
    EntityGolemStraw |    6.996 | 7.764
    machine.TileTube |    6.884 | 7.640
  TileConduitLiquid |    4.399 | 4.881
    TileLogicPointer |    4.170 | 4.627
  Average Entity of Type | Time/tick | Calls
        EntityGolemStraw |    0.292 |  6504
      EntityMiningLaser |    0.215 |  116
        factory.TilePump |    0.096 |  5691
  player.EntityPlayerMP |    0.047 |  4607
GT_TileEntity_ChargeOMat |    0.025 |  542

 

[DZCreeper]

Unless you actually know what those extra parameters in your startup file do, you don't need them. Java usually defaults to the options best suited for your needs.

Try this: java -server -Xms14G -Xmx14G -jar mcpc.jar nogui

 

[Devix]

I'm having exactly the same problem as you, looking at my TPS chart it fluctuates a lot and I cannot find the source of the lag.

We have TickThreading installed, but it doesn't seem to make much of a difference.

If anyone has some tips or a solution, I'd love to hear it.

 

[DZCreeper]

Do you have the same script I have in my above comment? I edited it to add the nogui part, I found that can cause a bit of lag and spikes in CPU usage.