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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)

7.  Administering Resource Controls (Tasks)

8.  Fair Share Scheduler (Overview)

Introduction to the Scheduler

CPU Share Definition

CPU Shares and Process State

CPU Share Versus Utilization

CPU Share Examples

Example 1: Two CPU-Bound Processes in Each Project

Example 2: No Competition Between Projects

Example 3: One Project Unable to Run

FSS Configuration

Projects and Users

CPU Shares Configuration

FSS and Processor Sets

FSS and Processor Sets Examples

Combining FSS With Other Scheduling Classes

Setting the Scheduling Class for the System

Scheduling Class on a System with Zones Installed

Commands Used With FSS

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



FSS Configuration

Projects and Users

Projects are the workload containers in the FSS scheduler. Groups of users who are assigned to a project are treated as single controllable blocks. Note that you can create a project with its own number of shares for an individual user.

Users can be members of multiple projects that have different numbers of shares assigned. By moving processes from one project to another project, processes can be assigned CPU resources in varying amounts.

For more information on the project(4) database and name services, see project Database.

CPU Shares Configuration

The configuration of CPU shares is managed by the name service as a property of the project database.

When the first task (or process) that is associated with a project is created through the setproject(3PROJECT) library function, the number of CPU shares defined as resource control project.cpu-shares in the project database is passed to the kernel. A project that does not have the project.cpu-shares resource control defined is assigned one share.

In the following example, this entry in the /etc/project file sets the number of shares for project x-files to 5:


If you alter the number of CPU shares allocated to a project in the database when processes are already running, the number of shares for that project will not be modified at that point. The project must be restarted for the change to become effective.

If you want to temporarily change the number of shares assigned to a project without altering the project's attributes in the project database, use the prctl command. For example, to change the value of project x-files's project.cpu-shares resource control to 3 while processes associated with that project are running, type the following:

# prctl -r -n project.cpu-shares -v 3 -i project x-files

See the prctl(1) man page for more information.


Replaces the current value for the named resource control.

-n name

Specifies the name of the resource control.

-v val

Specifies the value for the resource control.

-i idtype

Specifies the ID type of the next argument.


Specifies the object of the change. In this instance, project x-files is the object.

Project system with project ID 0 includes all system daemons that are started by the boot-time initialization scripts. system can be viewed as a project with an unlimited number of shares. This means that system is always scheduled first, regardless of how many shares have been given to other projects. If you do not want the system project to have unlimited shares, you can specify a number of shares for this project in the project database.

As stated previously, processes that belong to projects with zero shares are always given zero system priority. Projects with one or more shares are running with priorities one and higher. Thus, projects with zero shares are only scheduled when CPU resources are available that are not requested by a nonzero share project.

The maximum number of shares that can be assigned to one project is 65535.