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Oracle Solaris Tunable Parameters Reference Manual Oracle Solaris 11 Express 11/10 |
1. Overview of Oracle Solaris System Tuning
What's New in Oracle Solaris System Tuning?
Tuning Format of Tunable Parameters Descriptions
Example--Setting a Parameter in /etc/system
Recovering From an Incorrect Value
Example--Using mdb to Change a Value
Special Solaris tune and var Structures
2. Oracle Solaris Kernel Tunable Parameters
4. Internet Protocol Suite Tunable Parameters
5. Network Cache and Accelerator Tunable Parameters
A. Tunable Parameters Change History
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).
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).