smem

smem reports memory usage with shared memory divided proportionally among processes, includes swap usage

Installation

When smem is not installed by default, it can be added to the system using the relevant software package.

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Short option	Long option	Description
-a	--autosize	Set column width to fit terminal size
-c	--columns=COLUMNS	Define which columns to show
-h	--help	Show help
-k	--abbreviate	Show unit with suffix
-m	--mappings	Memory usage by mapping
-n	--numeric	Show user ID instead of username
-p	--percent	Show percentage
-r	--reverse	Reverse the sorted data
-s FIELD	--sort=FIELD	Select field to sort on
-t	--total	Show totals
-u	--users	Memory usage by user
-w	--system	Systemwide memory usage
-H	--no-header	Do not show the header in output
-K PATH	--kernel=PATH	Path to uncompressed kernel image (useful for -w)
-M FILTER	--mapfilter=FILTER	Set mapping filter (regular expression)
-P FILTER	--processfilter=FILTER	Set process filter (regular expression)
-R AMOUNT	--realmem=AMOUNT	Define total amount of memory, also relevant for systemwide output (-w)
-S PATH	--source=PATH	Defines path to /proc. May be useful to investigate captured data from other system
-U FILTER	--userfilter=FILTER	Set user filter (regular expression)
	--bar=FIELD	Show bar graph for selected field (graphical)
	--pie=FIELD	Show pie graph for selected field (graphical)

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Show processes and their memory usage

smem

Show only specific columns with data of interest

smem --columns="pid swap"

The following articles include an example on how to use smem and might be worth further exploring.