Problem Server Extreme Lagging

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Lazerus Artificial

New Member
Jul 29, 2019
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Since we have updated to mindcrack v8.1 and the new java 1.7.0_13, it is nearly impossible to play.
our server is at Nitrado, 16 slot with 4Gb RAM, Map is around 850Mb big
our CPU is permanently on 100% (we want to switch to another server soon)

also we have installed Mystcraft (only for portals, no extra dimensions), Minechem, Gravitygun

so...why is it so? is it a problem with Nitrado, Java, or Mindcrack?
anyone else has the problem?
 
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Lazerus Artificial

New Member
Jul 29, 2019
109
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AMD Opteron(TM) Processor 6274 (32 Cores)

thats all i can see.
but as i have heard, the server capacity is shared between multiple minecraft servers, we own only a part of it.

im doing a chunkfix now, maybe thats the problem.
there was someone on our server who explored around 40k blocks
 
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brandon706

New Member
Jul 29, 2019
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That shouldn't be the problem, those chunks don't stay loaded. With the CPU, minecraft is a single core application. Not sure how opteron works with servers. Are you chunkloading a bunch of stuff?
 
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Lazerus Artificial

New Member
Jul 29, 2019
109
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our Tech-stuff is loaded with chunkloaders.
but before the update it was no problem, thats why im wondering
edit: after the chunkfix our CPU usage lowered from 100% to 50%.
now i have to watch how long this works
edit2: ok...again 96%
edit3: its hopping between 50 and 100...crazy

edit4: searched for the CPU, it has 2200MHz
 
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Fido488

New Member
Jul 29, 2019
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Look into alternative startup commands. Personally, I'm using:
Code: 
cd Desktop/Direwolf20_server
java -server -Xincgc -Xmx3G -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=2 -XX:+AggressiveOpts -cp ftbserver.jar -jar ftbserver.jar
with a huge amount of success. Before I changed this I was having massive problems with lag. I would mine a block and it would reappear half a second later.
Search this forum for a post on startup commands.
 
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Lazerus Artificial

New Member
Jul 29, 2019
109
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0
is this possible with nitrado servers?
i think its not using the start.bat

edit:
deleted all chunkloaders, 0 players online, still at 100% cpu
so i dont think it is a mod-problem

could it be possible that the map is too big?
edit: a fresh map is at 2%...mh...maybe we should think about a reset

could it be a thaumcraft-aura problem? the file seems to be very big
 
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