Minecraft server issues

[Dreeadnought]

I am running in to some issues with My Minecraft server, When I get more than 3-4 people on lag starts.

I have tried the server in 2 different configurations:

1.)HOST HARDWARE

Xeon E5-2690v2 @ 3.4GHZ

80GB Hynix DDR3L 1333 

1TB WD HDD

Server 2016 DataCenter

    a.) VM Configuration

      GuestOS: MineOS

      4 Cores

     16 GB Ram

     1TB Samsung Evo 960 SSD (VM is the only thing on this drive)

 

2.)System #2

Host OS: MineOS

AMD A8-6600k @ 3.8GHZ

16 GB DDR3-1866

500GB Samsung evo SSD

 

Internet is Comcast 300Mb/30Mb

Using a Netgear Modem (can't remember model) And then through a Cisco 48-port 2960-X

 

The issue I am running into is the topping out on the CPU usage at 100%+ when we get more than 3-4 people on the server.

 

any suggestions would be appreciated. 

[MojangYang]

There is a limited ram allocated to minecraft servers. Only 1gb. You need to allocated more memory to it. google how to allocate more ram to minecraf server.

here is a link: https://www.minecraftforum.net/forums/support/server-support-and/2457262-tutorial-allocating-more-ram-to-minecraft-servers

[Dreeadnought]

I have dedicated to my server 12GB/ 16 GB 

 

Thank you though

[MojangYang]

2 minutes ago, Dreeadnought said:

I have dedicated to my server 12GB/ 16 GB 

Did the server log show the crash reason?

 

you might have installed he 16GB ram, but you need to allow the application to use it.

[Dreeadnought]

I haven't had any crashes due to lag.  In my -XMX I have it set to 12288MB for usage So i HAD 16 GB to the VM and of that 12GB was for the server.

On the new hardware there is 16Gb installed and 12GB for the server.  On both uses I don't exceed 7.5-8 Gb of memory.  What i am seeing is the CPU topping out at 100% 

 

[Ralphred]

What server are you running, the native one or something like spigot?

[Dreeadnought]

native

[Ralphred]

How many cores are you invoking java with, or is it built into the OS thingy?

[Dreeadnought]

On both machines its 4 cores