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Oracle VM Server for SPARC 2.0 Administration Guide
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Document Information


1.  Overview of the Oracle VM Server for SPARC Software

2.  Installing and Enabling Software

3.  Security

4.  Setting Up Services and the Control Domain

5.  Setting Up Guest Domains

6.  Setting Up I/O Domains

7.  Using Virtual Disks

8.  Using Virtual Networks

9.  Migrating Domains

10.  Managing Resources

Resource Reconfiguration

Dynamic Reconfiguration

Delayed Reconfiguration

Resource Allocation

CPU Allocation

Enabling the Whole-Core Constraint

Disabling the Whole-Core Constraint

Allocating CPUs to the Control Domain

Interactions Between the Whole-Core Constraint and Other Domain Features

CPU Dynamic Reconfiguration

Dynamic Resource Management

Domain Migration

Power Management

Using Memory Dynamic Reconfiguration

Adding Memory

Removing Memory

Tracking the Progress of a Memory DR Request

Canceling a Memory DR Request

Partial Memory DR Requests

Memory Reconfiguration of the Control Domain

Decrease the Control Domain's Memory

Dynamic and Delayed Reconfiguration

Memory Alignment

Memory Alignment for Active Domains

Memory Alignment for Bound Domains

Memory Alignment for Inactive Domains

Adding Unaligned Memory

Memory DR Examples

Using Power Management

Listing CPU Power-Managed Strands

List CPU Power-Managed Strands

List Power-Managed CPUs

Using Dynamic Resource Management

Listing Domain Resources

Machine-Readable Output

Show Syntax Usage for ldm Subcommands

Flag Definitions

Utilization Statistic Definition

Viewing Various Lists

Show Software Versions (-V)

Generate a Short List

Generate a Long List (-l)

Generate an Extended List (-e)

Generate a Parseable, Machine-Readable List (-p)

Generate a Subset of a Long List (-o format)

List a Variable

List Bindings

List Configurations

List Devices

List Available Memory

List Services

Listing Constraints

List Constraints for One Domain

List Constraints in XML Format

List Constraints in a Machine-Readable Format

11.  Managing Configurations

12.  Performing Other Administration Tasks

A.  Oracle VM Server for SPARC Physical-to-Virtual Conversion Tool

B.  Oracle VM Server for SPARC Configuration Assistant

C.  Logical Domains Manager Discovery

D.  Using the XML Interface With the Logical Domains Manager

E.  Logical Domains Manager XML Schemas



Resource Allocation

Starting with the Oracle VM Server for SPARC 2.0 release, the resource allocation mechanism uses resource allocation constraints and hints to assign resources to a domain at bind time.

A resource allocation constraint is a hard requirement that the system must meet when you assign a resource to a domain. If the constraint cannot be met, both the resource allocation and the binding of the domain fail.

A resource allocation hint is a soft requirement that the system attempts to meet when you assign a resource to a domain. The allocation of a resource can still succeed, and the domain can be bound even if the hint cannot be fully met. This situation can happen if the system can assign the resource in a way that does not necessarily meet the requirement.