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Oracle Solaris Tunable Parameters Reference Manual     Oracle Solaris 10 1/13 Information Library
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1.  Overview of Oracle Solaris System Tuning

What's New in Oracle Solaris System Tuning?

Oracle Solaris System Tuning in the Solaris 10 Release

Default Stack Size

System V IPC Configuration

NFSv4 Parameters

New and Changed TCP/IP Parameters

IP Forwarding Changes

SPARC: Translation Storage Buffer (TSB) Parameters

SCTP Tunable Parameters

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 system with 16 GB of memory is as follows:

20840448        maximum memory allowed in buffer cache (bufhwm)
   15898        maximum number of processes (v.v_proc)
      99        maximum global priority in sys class (MAXCLSYSPRI)
   15893        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).