JavaScript is required to for searching.
Skip Navigation Links
Exit Print View
Oracle Solaris 11.1 Tunable Parameters Reference Manual     Oracle Solaris 11.1 Information Library
search filter icon
search icon

Document Information


1.  Overview of Oracle Solaris System Tuning

What's New in Oracle Solaris System Tuning?

Tuning an Oracle Solaris System

Tuning Format of Tunable Parameters Descriptions

Tuning the Oracle Solaris Kernel

/etc/system File

Example-Setting a Parameter in /etc/system

Recovering From an Incorrect Value

kmdb Command

mdb Command

Example-Using mdb to Display Information

Special Oracle Solaris tune and var Structures

Viewing Oracle Solaris System Configuration Information

sysdef Command

kstat Utility

2.  Oracle Solaris Kernel Tunable Parameters

3.  Oracle Solaris ZFS Tunable Parameters

4.  NFS Tunable Parameters

5.  Internet Protocol Suite Tunable Parameters

6.  System Facility Parameters

A.  Tunable Parameters Change History

B.  Revision History for This Manual


Viewing Oracle Solaris System Configuration Information

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.

For more information, see mdb(1) or kadb(1M).

sysdef Command

The sysdef command provides the values of memory and process resource limits, and portions of the tune and v structures. For example, the sysdef “Tunable Parameters” section from a SPARC T3-4 system with 500 GB of memory is as follows:

2206203904      maximum memory allowed in buffer cache (bufhwm)
   65546        maximum number of processes (v.v_proc)
      99        maximum global priority in sys class (MAXCLSYSPRI)
   65541        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)

For more information, see sysdef(1M).