OutofMemory when trying to start twofishes

[canebat]

I have a 2gb Ubuntu VPS and I'm trying to run twofishes on it. I cannot start twofishes because it usually crashes with an OutofMemoryError. I see two variations:

Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded

or

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

I have upped the # of mapped files with:

sysctl -w vm.max_map_count = 131072

And I am starting twofishes by restricting the java memory allocation pool:

java -Xmx1g -Xms500m -jar server-assembly-0.84.9.jar --hfile_basepath INDEX_DIRECTORY

I tried variations of memory pool size (ie, Xms1g, Xms800m, etc) without success. I also have swap space set to 256mb, although I don't think it's helping.

Are there any optimal settings I can use to get it running on my 2gb instance?

[gadikotamohan]

@canebat No. There is no way, unfortunately.