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This chapter includes:
The Adaptive Partitioning User's Guide will help you set up and use adaptive partitioning to divide system resources in a flexible way between competing processes.
This guide is intended for software developers of individual applications, as well as for developers who are responsible for the overall time or throughput behavior of the entire system. In general, you need to consider the entire system when you set partition budgets, window sizes, memory allocation, and other parameters.
The following table may help you find information quickly in this guide:
| For information on: | Go to: | |
|---|---|---|
| Adaptive partitioning in general | What is Adaptive Partitioning? | |
| Using the adaptive partitioning architecture to solve different facets of the problem of controlling the consumption of resources in a system | Controlling Resources Using the Thread Scheduler | |
| Getting started with the thread scheduler | Quickstart: Adaptive Partitioning Thread Scheduler | |
| How the thread scheduler works | Using the Adaptive Partitioning Thread Scheduler | |
| Setting up and using the thread scheduler | Setting Up and Using the partitioning Thread Scheduler | |
| Knowing when and how to use the thread scheduler | Considerations for The Thread Scheduler | |
| Security considerations when partitioning | Security for Scheduler Partitions | |
| Checking for and fixing problems | Testing and Debugging | |
| Frequently Asked Questions about the Thread Scheduler | FAQ: Adaptive Partitioning Thread Scheduler | |
| Terminology used in this guide | Glossary |
Throughout this manual, we use certain typographical conventions to distinguish technical terms. In general, the conventions we use conform to those found in IEEE POSIX publications. The following table summarizes our conventions:
| Reference | Example |
|---|---|
| Code examples | if( stream == NULL ) |
| Command options | -lR |
| Commands | make |
| Environment variables | PATH |
| File and pathnames | /dev/null |
| Function names | exit() |
| Keyboard chords | Ctrl-Alt-Delete |
| Keyboard input | something you type |
| Keyboard keys | Enter |
| Program output | login: |
| Programming constants | NULL |
| Programming data types | unsigned short |
| Programming literals | 0xFF, "message string" |
| Variable names | stdin |
| User-interface components | Cancel |
We use an arrow (→) in directions for accessing menu items, like this:
You'll find the Other... menu item under .
We use notes, cautions, and warnings to highlight important messages:
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Notes point out something important or useful. |
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Cautions tell you about commands or procedures that may have unwanted or undesirable side effects. |
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Warnings tell you about commands or procedures that could be dangerous to your files, your hardware, or even yourself. |
In our documentation, we use a forward slash (/) as a delimiter in all pathnames, including those pointing to Windows files.
We also generally follow POSIX/UNIX filesystem conventions.
At the top and bottom of our HTML docs, you'll see some or all of these buttons:
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To obtain technical support for any QNX product, visit the Support + Services area on our website (www.qnx.com). You'll find a wide range of support options, including community forums.
© 2005–2009, QNX Software Systems GmbH & Co. KG. All rights reserved.
For more information, see the Copyright Notice.
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