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title: Process listings on Solaris
parent: FAQ
---
# Why use pst3 for check\_procs on Solaris?
Solaris systems restrict the information that is available when you run `ps`.
On other Unix systems, running `ps` will list you the entire arguments, but
Solaris restricts the arguments to the first 64 characters at the kernel.
This is a problem if you need to access the arguments to find out a specific
process (common for listing Java programs).
`/usr/ucb/ps` does list the full arguments, but only for your own processes.
If you are root, then running `/usr/ucb/ps` can get the full arguments for all
processes. However, the columns for `RSS` and `VSZ` merge together when the
values are too large and `check_procs` cannot pull the value out correctly.
The chosen approach is to create our own `ps`-like command, `pst3`. This
outputs the required information in a known format for `check_procs` to parse.
This is the default if you run `./configure` on a Solaris system.
Because `pst3` needs access to some kernel structures, it needs to be compiled
in 32 and 64 bit modes.
If you are comfortable with the limitations, it is possible to use a Solaris
`ps` command by specifying these options to `./configure`:
--with-ps-command="/usr/bin/ps -eo 's uid pid ppid vsz rss pcpu etime comm args'" \
--with-ps-format="%s %d %d %d %d %d %f %s %s %n" \
--with-ps-cols=10 \
--with-ps-varlist="procstat,&procuid,&procpid,&procppid,\
&procvsz,&procrss,&procpcpu,procetime,procprog,&pos"
The `--with-ps-varlist` should be on one line - separated here for
readability.
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