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

Outputs

Java or Python psutil are consistent with each other.

Fallback is to shell commands.

function bytes = ram_free(backend)
arguments
  backend (1,:) string = ["java", "python", "sys"]
end

fun = hbackend(backend, "ram_free");

bytes = fun();

% * VisualBasic (needs Windows) is needed to do this with .NET.
% * builtin memory() on Windows includes swap. The user could do that themselves.

end

Published with MATLAB® R2025a