"Too small maximum heap" Java error in Manjaro Linux running through terminal

Question

"Too small maximum heap" Java error in Manjaro Linux running through terminal

Really don’t know what to do about this one. I’m trying to start a minecraft server with more RAM but the commands in the terminal give me this error.

The server works only if I go to the file manager and click on the server.jar file, it then boots up like normal with the GUI and everything. The problem is that I can’t set RAM parameters through there, only through commands.

I’ve tried:

sudo java -Xmx1024 -Xms1024 -jar server.jar

sudo java -Xmx4096 -Xms1024 -jar server.jar

sudo java -Xmx8164 -Xms1024 -jar server.jar

sudo java -Xmx1000000 -Xms1024 -jar server.jar

sudo java -Xmx3072 -Xms2048 -jar server.jar

sudo java -Xmx2048 -Xms512 -jar server.jar

sudo java -Xmx1024 -Xms512 -jar server.jar

sudo java -Xmx512 -Xms256 -jar server.jar

All result in the exact same error every time:

"Error occurred during initialization of VM"

"Too small maximum heap"

I’ve tried these with -nogui too, same error.

Asked By: kaiser kothe

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Source

Answer 1

The default value for the xmx and xms settings are in bytes so these values are way too small.

From man java:

-Xmsn
                Specify the initial size, in bytes, of the memory allocation
                pool. This value must be a multiple of 1024 greater than 1MB.
                Append the letter k or K to indicate kilobytes, or m or M to
                indicate megabytes. The default value is chosen at runtime
                based on system configuration. For more information, see
                HotSpot Ergonomics
                Examples:

                       -Xms6291456
                       -Xms6144k
                       -Xms6m

 -Xmxn
                Specify the maximum size, in bytes, of the memory allocation
                pool. This value must a multiple of 1024 greater than 2MB.
                Append the letter k or K to indicate kilobytes, or m or M to
                indicate megabytes. The default value is chosen at runtime
                based on system configuration. For more information, see
                HotSpot Ergonomics
                Examples:

                       -Xmx83886080
                       -Xmx81920k
                       -Xmx80m

So try:

sudo java -Xmx2048m -Xms2048m -jar server.jar

On a side note I recommend looking into Linux Game Server Managers if you aren’t already familiar. They have a series of scripts that make configuring and running game servers on linux very easy.

Answered By: jesse_b