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Created April 1, 2023 12:54
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Show utilization of RAM memory on macOS using vm_stat and top
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vmstat-macos.md

To inspect RAM memory on macOS there are alternatives to vmstat or free on Linux: vm_stat and top (actually it's exists on both systems).

To check free RAM on macOS:
$> top -l 1 -s 0 | grep PhysMem
It will show you occupied physical memory and available once.

Either you can run this:
$> vm_stat | perl -ne '/page size of (\d+)/ and $size=$1; /Pages\s+([^:]+)[^\d]+(\d+)/ and printf("%-16s % 16.2f Mi\n", "$1:", $2 * $size / 1048576);'
It will show information in pages by default, but perl script provide output in human readable format.

References:

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