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Oracle Solaris Tunable Parameters Reference Manual     Oracle Solaris 11 Express 11/10
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Document Information

Preface

1.  Overview of Oracle Solaris System Tuning

What's New in Oracle Solaris System Tuning?

Tuning a Solaris System

Tuning Format of Tunable Parameters Descriptions

Tuning the 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 Change a Value

Special Solaris tune and var Structures

Viewing Solaris System Configuration Information

sysdef Command

kstat Utility

2.  Oracle Solaris Kernel Tunable Parameters

3.  NFS Tunable Parameters

4.  Internet Protocol Suite Tunable Parameters

5.  Network Cache and Accelerator Tunable Parameters

6.  System Facility Parameters

A.  Tunable Parameters Change History

B.  Revision History for This Manual

Index

Viewing 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 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 a 512-MB Sun Ultra 80 system is as follows:

334561280       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)

For more information, see sysdef(1M).