Command line and full screen utilities for browsing procfs, a "pseudo" file system dynamically generated by Linux to provide information about the status of entries in its process table.
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Jim Warner b05770d94a top: exploit some of those new smaps_rollup provisions
My, how time flies. Here we are finally attending to a
2 year old issue at long last (well, at least top is).

In truth, this change was prompted by that more recent
issue #201 and simply represents my initial picks from
among those available with the new library provisions.

Note: we have to bump that rcfile version whenever new
fields are added. That will mean older top programs no
longer can read this top's rcfile. But that's Ok since
top offers a warning before replacing an older rcfile.

Doubtless, more smaps_rollup fields will be introduced
under top as we get more experience with this feature.
However, any such usage comes with tremendoud costs as
was reported for the previous patch and repeated here:

Here is a small preview of just what you will discover
when using this command line: time top/top -d0 -n1000.

------------------------------------ as a regular user
    with only PID + RES (statm)
real       0m2.605s
user       0m1.060s
sys        0m1.377s
    with only PID + RSS (smaps)
real      0m26.397s                    10x more costly
user       0m1.253s
sys       0m24.915s

----------------- as a root (thus smaps for all tasks)
    with only PID + RES (statm)
real       0m2.651s
user       0m1.177s
sys        0m1.286s
    with only PID + RSS (smaps)
real      0m33.040s                    12x more costly
user       0m1.256s
sys       0m31.533s

Reference(s):
. top/ps: add support for PSS reporting
https://gitlab.com/procps-ng/procps/-/issues/112
. ps: expose shared/private memory separately
https://gitlab.com/procps-ng/procps/-/issues/201

Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-04-29 21:42:45 +10:00
contrib miscellaneous: clean up trailing whitespace once again 2013-04-07 18:05:01 +10:00
doc docs: fix a couple of spelling errors in new man pages 2021-04-06 16:51:03 +10:00
Documentation all: make buildable again for new 'misc.h' header file 2021-01-21 17:30:25 +11:00
include build-sys: fix some important 'tests.h' related issues 2020-08-17 21:49:08 +10:00
lib misc: Update Craig's email 2021-01-21 17:37:48 +11:00
man-po build-sys: Fix the uninstall-man target 2021-02-24 20:58:28 +11:00
misc build-sys: rename the 'tools' subdirectory to 'misc' 2012-03-02 21:25:38 +11:00
po build-sys: Ignore temp directory for POTFILES.in 2021-02-15 21:47:35 +11:00
proc library: add support for smaps_rollup file, <pids> api 2021-04-29 21:42:44 +10:00
ps ps: Add IO Accounting fields 2021-04-24 23:13:38 +10:00
testsuite build-sys: Handle zero length diskstats in tests 2021-03-29 22:23:03 +11:00
top top: exploit some of those new smaps_rollup provisions 2021-04-29 21:42:45 +10:00
.gitignore library: Rename to libproc-2 2021-02-20 22:30:31 +11:00
.gitlab-ci.yml test: Update gitlab CI YAML to use shared runner 2016-04-20 22:20:55 +10:00
AUTHORS Changed git site to gitlab 2015-05-10 14:57:50 +10:00
autogen.sh Fix a remaining util-linux word in autogen 2012-02-26 08:39:16 +11:00
ChangeLog Changed git site to gitlab 2015-05-10 14:57:50 +10:00
configure.ac build-sys: find split systemd libraries 2021-04-24 11:57:32 +10:00
COPYING license: update FSF addresses 2012-03-04 08:04:24 +11:00
COPYING.LIB miscellaneous: clean up trailing whitespace once again 2013-04-07 18:05:01 +10:00
create-man-pot.sh misc: Update translations _________________ (catch up) 2018-05-06 07:19:38 +10:00
free.1 docs: use correct units in free.1 _________ (catch up) 2019-09-22 07:32:03 +10:00
free.c free: Typo fix in error messages 2021-03-11 21:45:14 +11:00
INSTALL.md INSTALL.md: Replace blockquotes with code blocks 2020-04-24 18:56:16 +10:00
kill.1 kill: use sigqueue to pass value with the signal. 2020-05-11 17:36:12 +10:00
kill.c kill: use sigqueue to pass value with the signal. 2020-05-11 17:36:12 +10:00
Makefile.am configure: Add --disable-w 2021-04-24 11:29:48 +10:00
NEWS misc: Add NEWS item for previous 2021-04-24 23:17:35 +10:00
pgrep.1 pidwait: Rename from pwait 2021-02-15 21:55:05 +11:00
pgrep.c pkill: Add lt- variants 2021-04-05 14:40:00 +10:00
pidof.1 Merge branch 'teknoraver/procps-master' 2020-12-22 14:36:09 +11:00
pidof.c Merge branch 'teknoraver/procps-master' 2020-12-22 14:36:09 +11:00
pidwait.1 pidwait: Rename from pwait 2021-02-15 21:55:05 +11:00
pkill.1 procps 010114 2002-02-01 22:47:29 +00:00
pmap.1 docs: some manpage fixes 2020-06-04 22:33:16 +10:00
pmap.c misc: needed adaptations for the changes in <pids> api 2021-03-11 21:21:23 +11:00
pwdx.1 docs: some manpage fixes 2020-06-04 22:33:16 +10:00
pwdx.c 0021-pwdx: Fix a misleading comment. 2018-06-23 21:59:14 +10:00
README.md misc: eliminate accumulated trailing whitespace, again 2016-03-12 14:53:53 +11:00
skill.1 skill: support namespaces 2013-04-18 13:59:44 -04:00
skill.c all: make buildable again for new 'misc.h' header file 2021-01-21 17:30:25 +11:00
slabtop.1 slabtop: Check for bad d and o option combination 2021-03-11 22:10:37 +11:00
slabtop.c slabtop: Check for bad d and o option combination 2021-03-11 22:10:37 +11:00
snice.1 procps 010114 2002-02-01 22:47:29 +00:00
sysctl.8 docs: escape circumflex in sysctl.8 2021-03-29 22:28:30 +11:00
sysctl.c sysctl: config directory order 2020-02-27 21:56:13 +11:00
sysctl.conf misc: Add some link examples to sysctl.conf (catch up) 2018-05-06 07:19:38 +10:00
sysctl.conf.5 docs: some manpage fixes 2020-06-04 22:33:16 +10:00
tload.1 docs: some manpage fixes 2020-06-04 22:33:16 +10:00
tload.c all: make buildable again for new 'misc.h' header file 2021-01-21 17:30:25 +11:00
translate-man.sh Fixed translate-man.sh for no top ps 2014-05-28 20:12:33 +10:00
uptime.1 docs: Fix typos in slabtop.1, sysctl.8 and uptime.1 2014-09-16 19:35:28 +02:00
uptime.c misc: Update Craig's email 2021-01-21 17:37:48 +11:00
vmstat.8 vmstat: add guest time to stat 2021-04-28 18:51:34 +10:00
vmstat.c vmstat: add guest time to stat 2021-04-28 18:51:34 +10:00
w.1 docs: some manpage fixes 2020-06-04 22:33:16 +10:00
w.c w: Remove unreachable l option code 2021-03-11 21:48:14 +11:00
watch.1 watch.1: Correct long option for no linewrap. 2021-04-24 12:01:49 +10:00
watch.c If you use echo -e $(put sgr0)"text" - reset color attributes, it turns out the artifact (Btext 2020-12-22 15:44:29 +11:00

build status procps

procps is a set of command line and full-screen utilities that provide information out of the pseudo-filesystem most commonly located at /proc. This filesystem provides a simple interface to the kernel data structures. The programs of procps generally concentrate on the structures that describe the processess running on the system.

The following programs are found in procps:

  • free - Report the amount of free and used memory in the system
  • kill - Send a signal to a process based on PID
  • pgrep - List processes based on name or other attributes
  • pkill - Send a signal to a process based on name or other attributes
  • pmap - Report memory map of a process
  • ps - Report information of processes
  • pwdx - Report current directory of a process
  • skill - Obsolete version of pgrep/pkill
  • slabtop - Display kernel slab cache information in real time
  • snice - Renice a process
  • sysctl - Read or Write kernel parameters at run-time
  • tload - Graphical representation of system load average
  • top - Dynamic real-time view of running processes
  • uptime - Display how long the system has been running
  • vmstat - Report virtual memory statistics
  • w - Report logged in users and what they are doing
  • watch - Execute a program periodically, showing output fullscreen

Reporting Bugs

There are a few ways of reporting bugs or feature requests:

  1. Your distributions bug reporter. If you are using a distribution your first port of call is their bug tracker. This is because each distribution has their own patches and way of dealing with bugs. Also bug reporting often does not need any subscription to websites.
  2. GitLab Issues - To the left of this page is the issue tracker. You can report bugs here.
  3. Email list - We have an email list (see below) where you can report bugs. The problem with this method is bug reports often get lost and cannot be tracked. This is especially a big problem when its something that will take time to resolve.

If you need to report bugs, there is more details on the Bug Reporting page.

Email List

The email list for the developers and users of procps is found at http://www.freelists.org/archive/procps/ This email list discusses the development of procps and is used by distributions to also forward or discuss bugs.