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Java default heap allocations
Also known as: Help me win an internet argument.
Can you run java -XX:+PrintFlagsFinal -version | grep HeapSize and paste results, as well as amount of memory, and OpenJDK7/Oracle?
If you're feeling adventurous, you can try downloading the Spigot Minecraft implementation:
wget http://ci.md-5.net/job/Spigot/1073/artifact/Spigot-Server/target/spigot.jar
java -jar spigot.jar
tl;dr: Trying to convince people that Java defaults don't always work.
Comments
The defaults vary per machine. It might not work for what you do. It also varies per operating system, 32 vs 64 bit and many factors.
@concerto49: Exactly. Unfortunately, some people don't understand that.
Just add the memory flags and get over it
-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 2MB. 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 64MB. Examples: -Xmx83886080 -Xmx81920k -Xmx80mI've seen these values different for each OS & version (java and os)...
Usually it's around 2GB+ on windows and 1GB on Linux.
Just use these flags and your all set especially the Xmx.
There's a formula. It depends on the maximum available memory on your machine.
I believe that's correct. I read something about that before, but i think that might only apply after 1.4.