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README
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1992-05-08
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SPS - Show Process Status
===========================
Introduction:
SPS is a intended to be used as a replacement for the standard
ps(1) program. Its advantages over ps(1) are that it shows more
useful information, that the displayed information is more
comprehensible and that it is faster.
SPS is currently implemented for the following operating systems and
architectures. The corresponding Makefiles are also shown here:
Makefile.4.1 Standard 4.1bsd for Vax
Makefile.4.2 Standard 4.2bsd, Ultrix 1.x for Vax
Makefile.4.3 Standard 4.3bsd (or 4.3-tahoe) for Vax
Makefile.4.3+NFS 4.3bsd+NFS from Wisconsin (Mt. Xinu?, others?)
Makefile.sun.2.0 Sun 4.2 UNIX Release 2.0 - 2.2 for Sun-2
Makefile.sun.3.0 Sun 4.2 UNIX Release 3.0 for Sun-2, Sun-3
Makefile.sun.3.2 Sun 4.2 UNIX Release 3.2 for Sun-2, Sun-3
Makefile.sun.4.0 SunOS 4.0 for Sun-2, Sun-3, Sun-4
Makefile.sun.4.0+386i SunOS 4.0 for Sun 386i
Makefile.sun.4.1 SunOS 4.1 for Sun-2, Sun-3, Sun-4
Makefile.sun4.3.2 SunOS Sys 4-3.2 for Sun-4
Makefile.ultrix.2.0 DEC Ultrix 2.0 - 2.2
Makefile.ultrix.3.0 DEC Ultrix 3.0
Makefile.ultrix.4.0 DEC Ultrix 4.x
(I also have a somewhat ancient implementation for V7 on a PDP-11 as well
as Unisoft Version 1.3 on a MC68000 if anyone is interested).
What SPS does:
SPS displays wait channels symbolically, rather than as hexadecimal
addresses. (If you wish to teach SPS about a new sort of device,
you must add an entry in the symbol table (globals2.c) as well as
increasing the size of that table (NWAITSTATE in sps.h)).
SPS sorts processes before listing them, the order reflecting the
relationship of the processes. A child process is listed
underneath its corresponding parent and is indented to depict the
exact relationship. SPS also indicates setuid processes.
SPS displays such values as the resident and virtual sizes of
system processes. It accepts a whole range of options to control
the output. By default, SPS lists information about one's own
processes. Other options instruct it to be verbose (the "v"
option), to list all the command arguments of a process (the "w"
option) or to list the environment strings of that process (the "e"
option). Similarly, there are options to control which processes
are to be displayed. The "a" option tells it to describe all
processes and the "b" option tells it to describe "busy" processes;
the latter is useful if you wish to find out what is loading your
system. There are also options to select the output according to
user, controlling tty or process number.
SPS keeps its information in an information file; by default, this
is /tmp/.spsinfo. This means that it can avoid having to do an
expensive nlist() operation each time it is run. It must be
reinitialised (with the "i" option) if new users are added to
/etc/passwd or if a new version of /vmunix is installed.
How to build SPS:
1. In order to compile and install SPS, first unbundle the three shell
archive files.
2. Check that the define statements in sps.h are large enough for
your system. In particular, you may need to increase MAXTTYS
to reflect the number of tty devices in /dev. The parameter
MAXUSERS defines the maximum number of users defined in the
password file (or through the Yellow Pages). Because the
user-ids are held in an internal hash table, this should
probably be at least double the number of actual users.
3. Choose an appropriate Makefile from the table above and compile
the source files. For example:
% make -f Makefile.sun.3.2
4. Try running SPS. First, a suitable information file must be
initialised. It should then be able to display information
concerning running processes on your system:
# Initialise SPS. Ignore any error messages at this stage.
% sps i
# Instruct SPS to list all active processes in verbose format.
% sps va
5. If this all works, install SPS with the appropriate Makefile
and reinitialise it:
% make -f Makefile.sun.3.2 install
% sps -i
Bug reports:
Send all bug reports, fixes, comments and suggestions to Robert Ward at -
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
J. Robert Ward,
Olsen & Associates AG, Seefeldstrasse 233, CH-8008 Zuerich, Switzerland
Tel.: +41 1 552224 Fax: +41 1 552282
Email: robert@olsen.ch Uucp: uunet!olsen!robert
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~