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 953016291a top: squashed 'scale_tics' catch-up for Ctrl-E scaling
[ the original newlib commit message(s) appear below ]

---------------------------------- newlib patch #1 ---
top: refactor 'scale_tics' function for better scaling

This patch refactors the 'scale_tics' function to more
closely parallel uptime shown on the first line of the
summary area. The old logic has been preserved through
the header file's new  #define SCALE_FORMER provision.

However, the former logic was actually a big disaster.
These are some potential problems with that old logic:

1. With respect to our time fields top no longer deals
solely with cpu time. So, the old limits of '68 weeks'
could possibly be insufficient to reflect those times.

2. Given the widths of top's new time fields, the code
never got beyond scaling to hours. For example, with a
ridiculously large span of 19 years, the scaled result
would then be shown as '167832h'. We never reached the
days ('6993d') or even the weeks ('999w') equivalents.

3. Similarly, with that 'TIME+' field and a large tics
value, results would then appear as 'MMMMMM:SS' rather
than the more meaningful 'HH:MM:SS' or days and hours.

So henceforth we will adopt these scaling conventions:

  MMM:SS.hh ... minutes:seconds.hundredths
  MMM:SS ...... minutes:seconds
  HH,MM ....... hours,minutes
  D+H ......... days+hours (with 'd' & 'h' suffixes)
  D ........... days (with 'd' suffix)
  W+D ......... weeks+days (with 'w' & 'd' suffixes)
  W ........... weeks (with 'w' suffix)

Note that, unlike our former scaling logic, that 'MMM'
portion won't be allowed to grow unconditionally. It's
limited (arbitrarily?) to 360 total minutes (6 hours).
Additionally, the 'HH' guy will be limited to 96 hours
(4 days) while that 'D' limit was set at 14 (2 weeks).

Whenever a limit is hit, scaling will advance a level.

---------------------------------- newlib patch #2 ---
top: extended 'scale_tics' function for Ctrl-E scaling

That normalization of the 'scale_tics' function in the
prior commit convinced me that I won't please everyone
with my arbitrary choices for the scaling transitions.

So, this patch will provide the users with a means for
setting their own scaling transition points with a new
toggle. Ctrl-E was chosen since the 'e/E' toggles were
already present as a means of scaling (albeit memory).

[ this toggle will also serve an educational purpose ]
[ by allowing one to see all the scaling conventions ]

The scaling a user establishes is saved in the rcfile.

---------------------------------- newlib patch #3 ---
top: enhanced 'scale_tics' function for Ctrl-E scaling

When scale_tics was refactored and then Ctrl-E support
added to top, the complete range of scaling values was
not visible. Namely, a single 'd' (days) & 'w' (weeks)
was never seen with ^E. With this commit they will be.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-03-15 22:13:44 +11:00
contrib miscellaneous: clean up trailing whitespace once again 2013-04-07 18:05:01 +10:00
Documentation miscellaneous: remove some trailing whitespace buildup 2015-06-20 07:46:23 +10:00
include c: print strerror() instead of error code. 2021-06-16 20:01:46 +10:00
lib testsuite: Make test program compile on Hurd 2021-10-13 07:59:04 +11:00
man-po build-sys: Don't require po4a for installation 2021-02-08 21:23:41 +11:00
misc build-sys: rename the 'tools' subdirectory to 'misc' 2012-03-02 21:25:38 +11:00
po nls: Update the translation files 2021-01-28 22:39:49 +11:00
proc fix uid/gid > 2^31 2021-10-25 19:38:10 -04:00
ps ps: swat insidious bug with the %cpu' format specifier 2022-03-15 22:13:44 +11:00
testsuite sysctl: Support systemd glob patterns 2021-09-13 22:07:37 +10:00
top top: squashed 'scale_tics' catch-up for Ctrl-E scaling 2022-03-15 22:13:44 +11:00
.gitignore pidwait: Rename from pwait 2021-02-15 21:10:06 +11:00
.gitlab-ci.yml added gettext to dependency 2016-04-20 22:15:27 +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 configure: add macro to check for __PROGNAME 2021-05-26 15:45:02 +02:00
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 2018-03-12 14:24:49 +11:00
free.1 docs: use correct units in free.1 2018-05-31 20:34:13 +10:00
free.c free: Clean up scale_size and fix free -h --si 2021-06-15 21:42:51 +02:00
INSTALL.md INSTALL.md: Replace blockquotes with code blocks 2020-04-24 07:50:57 +00:00
kill.1 kill: Adjust documentation for sigqueue 2020-04-24 19:29:34 +10:00
Makefile.am configure: Add --disable-w 2021-04-23 16:27:30 -04:00
NEWS sysctl: Support systemd glob patterns 2021-09-13 22:07:37 +10:00
pgrep.1 pidwait: Rename from pwait 2021-02-15 21:10:06 +11:00
pgrep.c fix uid/gid > 2^31 2021-10-25 19:38:10 -04:00
pidof.1 pidof: allow to suppress output 2020-12-22 14:31:17 +11:00
pidof.c pidof: allow to suppress output 2020-12-22 14:31:17 +11:00
pidwait.1 pidwait: Rename from pwait 2021-02-15 21:10:06 +11:00
pkill.1 procps 010114 2002-02-01 22:47:29 +00:00
pmap.1 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
pmap.c Coverity scan findings - memleaks, unused vars, potential nullptr dereferences 2021-05-06 16:32:11 +02:00
procio.c procio: fix potential out-of-bounds access when write fails 2019-03-04 21:44:52 +11:00
pwdx.1 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
pwdx.c pwdx: Fix a misleading comment. 2018-05-19 07:32:21 +10:00
README.md misc: Remove build badge 2018-06-23 22:51:12 +10:00
skill.1 docs: skill.1 - Remove trailing ^Z 2019-10-31 14:24:17 +11:00
skill.c kill: Fix argument handling for negative PIDs 2020-12-22 03:16:47 +00:00
slabtop.1 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
slabtop.c free,slabtop,uptime: complain about extra ops 2020-10-19 22:36:06 +11:00
snice.1 procps 010114 2002-02-01 22:47:29 +00:00
sysctl.8 sysctl man page update for pattern 2021-05-29 06:17:43 +00:00
sysctl.c sysctl: Support systemd glob patterns 2021-09-13 22:07:37 +10:00
sysctl.conf misc: Add link protection examples to sysctl.conf 2018-03-03 18:56:20 +11:00
sysctl.conf.5 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
tload.1 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
tload.c tload: Prevent integer overflows of ncols, nrows, and scr_size. 2018-05-19 07:32:21 +10:00
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 free,slabtop,uptime: complain about extra ops 2020-10-19 22:36:06 +11:00
vmstat.8 docs: vmstat.8 - swap is not virtual memory 2021-01-21 17:58:48 +11:00
vmstat.c vmstat: Add NEWS and revert comment from prev 2020-05-12 18:57:26 +10:00
w.1 docs: some manpage fixes 2020-06-04 22:25:26 +10:00
w.c w: Use POSIX <utmpx.h> functions where available 2020-12-22 14:59:15 +11:00
watch.1 docs: Consistent style across watch.1 2020-12-22 11:02:58 +11:00
watch.c Coverity scan findings - memleaks, unused vars, potential nullptr dereferences 2021-05-06 16:32:11 +02:00

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.