diff --git a/cavemen/user_jvm_args.txt b/cavemen/user_jvm_args.txt
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+# Xmx and Xms set the maximum and minimum RAM usage, respectively.
+# They can take any number, followed by an M or a G.
+# M means Megabyte, G means Gigabyte.
+# For example, to set the maximum to 3GB: -Xmx3G
+# To set the minimum to 2.5GB: -Xms2500M
+
+# A good default for a modded server is 4GB.
+# Uncomment the next line to set it.
+-Xmx6G