RAM_FREE get free physical RAM

What 'free' memory means has many definitions across computing platforms. The user must consider total memory and monitor swap usage.

get free physical RAM across operating systems https://docs.oracle.com/en/java/javase/21/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html#getFreeMemorySize()

Contents

Inputs
Outputs

Inputs

backend: backend to use

Outputs

i: free physical RAM [bytes]
b: backend used