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JRuby Error: Your application used more memory than the safety cap of 500m

I was running a JRuby something.rb script and suddenly it throws this: 

Error: Your application used more memory than the safety cap of 500m.
Specify -J-Xmx####m to increase it (#### = cap size in MB).
Specify -w for full OutOfMemoryError stack trace

What caused this and how do I fix it?

Solution

  • You are running out of memory (heap) reserved for Java virtual machine. Try to increase it in server startup with command line parameters or configuration files.

    Something like this:

    server_start_command -J-Xm900m

    Or fix your ruby script to use less heap memory.