Help with Minecraft Server and i7

[Admiral Naismith]

So I tried to get help from the Minecraft forums, no one replied. So I'm hoping someone will notice it here. I should point out this is a vanilla server.

 

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Hello,

 

So I've been trying to setup a simple creative server for just me and a few friends, and I'm having some difficulty.

Specs:

i7 4790k

GTX 970

RAM: 8gb

Server is on a 1TB HDD

Windows 8.1

 

With no one on, the average tick is ~2.5ms. When I get on, the average tick goes up to 20ms+ and I get repeated "could not keep up" errors if I fly around or teleport.

If I try to get it to use 2gb of ram, it gives me the error:

 

Error occurred during initialization of VM

Could not reserve enough space for 2097152KB object heap

 

Any suggestions are much appreciated!

 

The bat file:

 java -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=2 -XX:+AggressiveOpts -Xms1G -Xmx1G -jar Minecraft_Server.1.8.3.jar -o true
PAUSE

 

If I left any necessary information out just tell me.

[TheKDub]

Make sure 64 bit java is installed, you have xmx at the start of the jar file and the end, you only need it in there once. 

 

Try setting your bat file to this:

java -Xmx2G -jar Minecraft_Server.1.8.3.jar -o truePAUSE

[Enderman]

you listed -Xmx twice

also you dont need Xms

just remove the last two Xmx and Xms and just leave the first -Xmx

set that one to 2G not 1024M

 

double check you have the latest 64 bit java version installed

[Admiral Naismith]

 

 

 

 

 

 

 

I did what you guys suggested, and the problem has improved and I'm running with 2gb now. Its still slower than I would expect it to be.

 

Average tick sits between 8-12ms, spiking to 20-30 if I teleport.

 

One 'Can't keep up' error says "Running 9979ms behind, skipping 199 tick(s)"

I got one when I first joined and two when I teleported.

[Enderman]

I did what you guys suggested, and the problem has improved and I'm running with 2gb now. Its still slower than I would expect it to be.

 

Average tick sits between 8-12ms, spiking to 20-30 if I teleport.

 

One 'Can't keep up' error says "Running 9979ms behind, skipping 199 tick(s)"

I got one when I first joined and two when I teleported.

thats normal

generating new terrain causes lag which shows the "running behind" error

it wont break anything or crash the server though

[TheKDub]

thats normal

generating new terrain causes lag which shows the "running behind" error

it wont break anything or crash the server though

 

This ^

 

It helps to have the server running on a HDD that is not being used for your OS, or an SSD, that way chunk loading is much smoother.

[Admiral Naismith]

This ^

 

It helps to have the server running on a HDD that is not being used for your OS, or an SSD, that way chunk loading is much smoother.

Its on a separate HDD. OS is on an SSD.

 

 

thats normal

generating new terrain causes lag which shows the "running behind" error

it wont break anything or crash the server though

 OK. I'll just run as-is for now.

 

Thanks everyone for the help!

[TheKDub]

Its on a separate HDD. OS is on an SSD.

 

What RPM is the HDD? and have you defragged it recently?

[Admiral Naismith]

 

 

 

7200RPM

Its just the typical 1tb Caviar Blue sold by WD.

No I have not, I'll do that.