Why can't I give minecraft 3GB of RAM?

April 29, 2014 5.9k views
kylebshr
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kylebshr
I've set up a droplet with 4GB of ram, but when I try to start a minecraft server with 3GB, it says there's not enough memory. I have no other processes running. Any ideas? Thanks!
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8 Answers
kier.lightning April 29, 2014
java -Xms512M -Xmx3G -jar minecraft_server.jar nogui

This should work...
The -Xms is the initial memory and the Xmx is the maximum memory. the server will allocate the 512 Mb of memory when you start it and then whenever it needs more it will automatically allocate it up to a maximum of 3Gb.
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kylebshr April 29, 2014
Alright, I'll try that. Do you know why I can't start it with 3GB allocated?
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kier.lightning April 29, 2014
No, I would assume that the server or java doesn't like reserving more than X amount of ram for a process though.
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kylebshr April 29, 2014
Even with that command... not working :/ http://imgur.com/u6hEO72
It's definitely a 4GB droplet.
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kamaln7 MOD April 29, 2014
What's the output of 
free -m
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kier.lightning April 29, 2014
Sorry it took me so long to reply got caught up but are you running 64bit jvm?
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kier.lightning April 29, 2014
and what is the maximum memory it lets you use.

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UserAsifAli February 22, 2017
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