2 8 Java Hotspot Technology

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Refer to the following reference material:

Java command arguments

Argument	Description
‑Xms<size>	Specify the initial heap 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, m or M to indicate megabytes, g or G to indicate gigabytes.
‑Xmx<size>	Specify the maximum heap 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, m or M to indicate megabytes, g or G to indicate gigabytes.
‑Xss<size>	Specify the thread stack size.
‑Xrs	Reduces usage of operating-system signals.

Example

java -Xms1G -Xmx1G -Xrs ...