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 Post subject: Minecraft usage
PostPosted: Fri Nov 11, 2011 1:58 pm 
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Wondering what is normal for a minecraft server.
Ours is running at 400-500mb empty, and seems to increase by 200mb per player.
CPU stays about 1-10%, but spikes a lot up to mid 20's and sometimes much higher.

Running it on a single core system right now with a l4d2 server and ts3.
Procon also runs there as well, but it is idle with server being empty.

Changed to a SSD drive, but things seem to get worse stat wise.

I don't know if it's related to the drive problem that you mentioned in your notice for our server.

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 Post subject: Re: Minecraft usage
PostPosted: Fri Nov 11, 2011 2:03 pm 
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The game only needs something like 30 MB per player above a smallish base amount (like a few hundred MB), but uses the rest to cache loaded chunks, so you'll have a difficult time determining what you need to assign the Java process. Keep an eye on the CPU usage and how the server feels in-game and use those to adjust the server if need be. If you run plugins, make sure that they are optimized, as well.


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 Post subject: Re: Minecraft usage
PostPosted: Fri Nov 11, 2011 2:31 pm 
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The kids have been complaining alot about the lag.
Not sure if I should jump back up to a 2-core, or if that will even help.

CPU bounces around - idle it's at 1%.
With players it mostly stays under 10%, but can spike.

Right now the server is empty, and it's running at 592/1024mb

Would running multi-maps create more load?
They run the multiverse core to create more maps.

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 Post subject: Re: Minecraft usage
PostPosted: Fri Nov 11, 2011 7:36 pm 
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That can create more load, yes. Each chunk loaded takes up RAM, which means that if you have say 6 players all standing next to each other, they are all going to be in the same area without extra chunks loading as much. Take those same 6 people and have them out running around in different areas, suddenly a lot more chunks will be loaded and taking up RAM.

In the case of multiple worlds, especially world generation which can spike CPU, that load can increase quite a bit.

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