smem
Report memory usage with proportional metrics
TLDR
Print memory usage for current processes
$ smem
Print memory usage for every user on the system$ smem --users
Print memory usage for a specified user$ smem --userfilter [username]
Print system memory information$ smem --system
SYNOPSIS
smem [options]
DESCRIPTION
smem reports memory usage with an emphasis on proportional set size (PSS), which is a more meaningful metric than RSS for systems with shared memory. PSS distributes shared memory proportionally among processes sharing it.
The tool provides accurate memory usage analysis by accounting for shared libraries and memory-mapped files. This makes it particularly useful for understanding actual per-process memory consumption.
PARAMETERS
--users
Show memory usage per user--userfilter _user_
Filter by username--system
Show system-wide memory information-c, --columns _columns_
Specify output columns-s, --sort _column_
Sort by specified column-r, --reverse
Reverse sort order-k, --kilounits
Show sizes in kilobytes-m, --megaunits
Show sizes in megabytes-p, --percent
Show percentages-t, --totals
Show totals
CAVEATS
Requires read access to /proc/[pid]/smaps (typically root for all processes). PSS calculation can be slow on systems with many processes. Kernel must have CONFIGPROCPAGE_MONITOR enabled.