Several tools are available to examine system configuration information. Some tools require superuser privilege. Other tools can be run by a non-privileged user. Every structure and data item can be examined with the kernel debugger by using mdb on a running system or by booting under kmdb.
The sysdef command provides the values of System V IPC settings, STREAMS tunables, process resource limits, and portions of the tune and v structures. For example, the sysdef “Tunable Parameters” section from on Sun Fire 280R with 2GB RAM as below
* Tunable Parameters
42082304 maximum memory allowed in buffer cache (bufhwm)
30000 maximum number of processes (v.v_proc)
99 maximum global priority in sys class (MAXCLSYSPRI)
29995 maximum processes per user id (v.v_maxup)
30 auto update time limit in seconds (NAUTOUP)
25 page stealing low water mark (GPGSLO)
1 fsflush run rate (FSFLUSHR)
25 minimum resident memory for avoiding deadlock (MINARMEM)
25 minimum swapable memory for avoiding deadlock (MINASMEM)
*
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