General Tuning Concepts
Administration
A single Application Server installation on a server can encompass multiple instances. A group of one or more instances that are administered by a single Administration Server is called a domain. Grouping server instances into domains permits different people to independently administer the groups.
You can use a
In a deployment environment, an administrator can create domains based on application and business function. For example, internal Human Resources applications may be hosted on one or more servers in one Administrative domain, while external customer applications are hosted on several administrative domains in a server farm.
The Application Server supports virtual server capability for web applications. For example, a web application hosting service provider can host different URL domains on a single Application Server process for efficient administration.
For detailed information on administration, see Sun GlassFish Enterprise Server 2.1
Administration Guide.
General Tuning Concepts
Some key concepts that affect performance tuning are:
■User load
■Application scalability
■Margins of safety
The following table describes these concepts, and how they are measured in practice. The left most column describes the general concept, the second column gives the practical ramifications of the concept, the third column describes the measurements, and the right most column describes the value sources.
Chapter 1 • Overview of Enterprise Server Performance Tuning | 23 |
