psmem

Description

A clone of ps_mem written in C.

Features

• List all your current running processes and their ram usage.
• Runs without root permissions, although running with root permissions provides more accurate results.

Dependencies

psmem requires POSIX make, an ANSI C compiler, the feature macro DEFAULT_SOURCE, stdio.h, stdlib.h, string.h, unistd.h, libgen.h and dirent.h.

Installing

git clone https://github.com/jastintime/psmem.git
cd psmem
sudo make clean install

This will install psmem to /usr/local/bin/ and the manpage to /usr/local/share/man, if you'd like it somewhere else modify the makefile.

Differences from ps_mem

ps_mem has some hacks to work with really old versions of the linux kernel(2.6.1 - 2.6.9), these hacks have not been reimplemented. ps_mem also has the following arguments that have not been reimplemented --split-args, --total, --discriminate-by-pid, --swap, -p, -w these features are either better implemented as scripts that utilize psmem or as completely different tools.

For example --total can be naively implemented as psmem | tail -n 2 | head -n 1 | xargs.

FreeBSD support is also not yet added, if you'd like this all you would need to do is change the PROC_DIRECTORY macro to /compat/linux/proc at build time and implement smaps support, PR's welcomed.

Contributing

psmem is written in a plain C style, try to avoid introducing new dependencies and follow the same style. Features and ideas that can be implemented through a script or are better placed in a different tool will most likely be rejected. The Todo section is a good guideline for contributions.

Todo

• Fallback to smaps if we cannot find smaps_rollup