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Oracle Solaris 11.1 Administration: Oracle Solaris Zones, Oracle Solaris 10 Zones, and Resource Management     Oracle Solaris 11.1 Information Library
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Part I Oracle Solaris Resource Management

1.  Introduction to Resource Management

2.  Projects and Tasks (Overview)

3.  Administering Projects and Tasks

4.  Extended Accounting (Overview)

5.  Administering Extended Accounting (Tasks)

6.  Resource Controls (Overview)

Resource Controls Concepts

Resource Limits and Resource Controls

Interprocess Communication and Resource Controls

Resource Control Constraint Mechanisms

Project Attribute Mechanisms

Configuring Resource Controls and Attributes

Available Resource Controls

Zone-Wide Resource Controls

Units Support

Resource Control Values and Privilege Levels

Global and Local Actions on Resource Control Values

Global Actions on Resource Control Values

Local Actions on Resource Control Values

Resource Control Flags and Properties

Resource Control Enforcement

Global Monitoring of Resource Control Events

Applying Resource Controls

Temporarily Updating Resource Control Values on a Running System

Updating Logging Status

Updating Resource Controls

Commands Used With Resource Controls

7.  Administering Resource Controls (Tasks)

8.  Fair Share Scheduler (Overview)

9.  Administering the Fair Share Scheduler (Tasks)

10.  Physical Memory Control Using the Resource Capping Daemon (Overview)

11.  Administering the Resource Capping Daemon (Tasks)

12.  Resource Pools (Overview)

13.  Creating and Administering Resource Pools (Tasks)

14.  Resource Management Configuration Example

Part II Oracle Solaris Zones

15.  Introduction to Oracle Solaris Zones

16.  Non-Global Zone Configuration (Overview)

17.  Planning and Configuring Non-Global Zones (Tasks)

18.  About Installing, Shutting Down, Halting, Uninstalling, and Cloning Non-Global Zones (Overview)

19.  Installing, Booting, Shutting Down, Halting, Uninstalling, and Cloning Non-Global Zones (Tasks)

20.  Non-Global Zone Login (Overview)

21.  Logging In to Non-Global Zones (Tasks)

22.  About Zone Migrations and the zonep2vchk Tool

23.  Migrating Oracle Solaris Systems and Migrating Non-Global Zones (Tasks)

24.  About Automatic Installation and Packages on an Oracle Solaris 11.1 System With Zones Installed

25.  Oracle Solaris Zones Administration (Overview)

26.  Administering Oracle Solaris Zones (Tasks)

27.  Configuring and Administering Immutable Zones

28.  Troubleshooting Miscellaneous Oracle Solaris Zones Problems

Part III Oracle Solaris 10 Zones

29.  Introduction to Oracle Solaris 10 Zones

30.  Assessing an Oracle Solaris 10 System and Creating an Archive

31.  (Optional) Migrating an Oracle Solaris 10 native Non-Global Zone Into an Oracle Solaris 10 Zone

32.  Configuring the solaris10 Branded Zone

33.  Installing the solaris10 Branded Zone

34.  Booting a Zone, Logging in, and Zone Migration



Resource Controls Concepts

In the Oracle Solaris operating system, the concept of a per-process resource limit has been extended to the task and project entities described in Chapter 2, Projects and Tasks (Overview). These enhancements are provided by the resource controls (rctls) facility. In addition, allocations that were set through the /etc/system tunables are now automatic or configured through the resource controls mechanism as well.

A resource control is identified by the prefix zone, project, task, or process. Resource controls can be observed on a system-wide basis. It is possible to update resource control values on a running system.

For a list of the standard resource controls that are available in this release, see Available Resource Controls See Resource Type Properties for information on available zone-wide resource controls.

Resource Limits and Resource Controls

UNIX systems have traditionally provided a resource limit facility (rlimit). The rlimit facility allows administrators to set one or more numerical limits on the amount of resources a process can consume. These limits include per-process CPU time used, per-process core file size, and per-process maximum heap size. Heap size is the amount of scratch memory that is allocated for the process data segment.

The resource controls facility provides compatibility interfaces for the resource limits facility. Existing applications that use resource limits continue to run unchanged. These applications can be observed in the same way as applications that are modified to take advantage of the resource controls facility.

Interprocess Communication and Resource Controls

Processes can communicate with each other by using one of several types of interprocess communication (IPC). IPC allows information transfer or synchronization to occur between processes. The resource controls facility provides resource controls that define the behavior of the kernel's IPC facilities. These resource controls replace the /etc/system tunables.

Obsolete parameters that are used to initialize the default resource control values might be included in the /etc/system file on this Oracle Solaris system. However, using the obsolete parameters is not recommended.

To observe which IPC objects are contributing to a project's usage, use the ipcs command with the -J option. See How to Use ipcs to view an example display. For more information about the ipcs command, see ipcs(1).

For information about Oracle Solaris system tuning, see the Oracle Solaris 11.1 Tunable Parameters Reference Manual.

Resource Control Constraint Mechanisms

Resource controls provide a mechanism for the constraint of system resources. Processes, tasks, projects, and zones can be prevented from consuming amounts of specified system resources. This mechanism leads to a more manageable system by preventing over-consumption of resources.

Constraint mechanisms can be used to support capacity-planning processes. An encountered constraint can provide information about application resource needs without necessarily denying the resource to the application.

Project Attribute Mechanisms

Resource controls can also serve as a simple attribute mechanism for resource management facilities. For example, the number of CPU shares made available to a project in the fair share scheduler (FSS) scheduling class is defined by the project.cpu-shares resource control. Because the project is assigned a fixed number of shares by the control, the various actions associated with exceeding a control are not relevant. In this context, the current value for the project.cpu-shares control is considered an attribute on the specified project.

Another type of project attribute is used to regulate the resource consumption of physical memory by collections of processes attached to a project. These attributes have the prefix rcap, for example, rcap.max-rss. Like a resource control, this type of attribute is configured in the project database. However, while resource controls are synchronously enforced by the kernel, resource caps are asynchronously enforced at the user level by the resource cap enforcement daemon, rcapd. For information on rcapd, see Chapter 10, Physical Memory Control Using the Resource Capping Daemon (Overview) and rcapd(1M).

The project.pool attribute is used to specify a pool binding for a project. For more information on resource pools, see Chapter 12, Resource Pools (Overview).