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  2. QNX Software Development Platform

    QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.

  3. OS Components & Operations

  4. Boot Optimization Guide

    The Boot Optimization Guide describes techniques you can use to reduce the time from your board's initial power on until you have a fully functional QNX system running on the board.

  5. Optimizing the Platform Application Stack

    This chapter present optimization techniques you can apply in the bootup sequence at, and after, the boot script.

  • QNX Momentics IDE User's Guide

    This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.

  • QNX Software Development Platform

    QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.

    • Quickstart Guide

    • System Architecture

      The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.

    • OS Components & Operations

      • Boot Optimization Guide

        The Boot Optimization Guide describes techniques you can use to reduce the time from your board's initial power on until you have a fully functional QNX system running on the board.

        • About the System Startup Sequence

          The boot process consists of several tasks, each handled by a specialized component.

        • Optimizing the Loading and Launching of the OS

          This chapter presents optimization techniques you can apply in the bootup sequence that precedes the boot script.

        • Optimizing the Platform Application Stack

          This chapter present optimization techniques you can apply in the bootup sequence at, and after, the boot script.

          • Reorder the startup program

            A microkernel OS allows you to reorder some of your startup program.

          • Make careful use of the default boot script

            The script section in the buildfile we provide normally has many components commented out so that you build a minimal system.

          • Consider the placement of waitfor statements

            The waitfor statements in the boot script aren't grouped for optimal performance.

        • Measuring Boot Times

          Before applying any of the techniques described here, always remember to get a stable baseline measurement of system boot speed.

        • Optimizing Screen Startup Times

          This chapter describes strategies and techniques that you can use to reduce the time between when you power on and when Screen is ready on your system.

      • Building Embedded Systems

        The Building Embedded Systems guide is intended for developers who are developing or building BSPs for QNX OS embedded systems.

      • Customizing a BSP

        While QNX provides Board Support Packages (BSPs) for many common platforms and their individual variants, in some cases, you need a BSP for a board that QNX does not provide. If this is the case, you can modify a QNX BSP or develop your own.

      • Device Publishers Developer's Guide
      • High Availability Framework Developer's Guide
      • High-Performance Networking Stack (io-sock) User's Guide

        This guide contains instructions for implementing and using the QNX OS High-Performance Networking Stack and its manager, io-sock.

      • PCI Server User's Guide

      • Performance Tuning User's Guide
      • QNX Filesystem for Safety User's Guide

      • SMMUMAN User's Guide

      • System Analysis Toolkit (SAT) User's Guide
      • Technotes
      • User's Guide

        The QNX OS User's Guide is intended for all users of a QNX OS system, from system administrators to end users.

    • Graphics

    • Programming

    • System Security Guide

      The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.

    • Utilities & Libraries

    • Migrating to QNX OS 8.0
  • QNX Software in the Cloud

    QNX Software in the Cloud enables developers to use the QNX OS in the Amazon cloud environment.

  • QNX Toolkit for Visual Studio Code

    This User's Guide describes the QNX® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX® Operating System (OS) applications and systems.

  • QNX Hypervisor User's Guide

    This User's Guide explains the QNX hypervisor architecture and provides instructions for installing and running a QNX Hypervisor system, changing system components and configuration, and using hypervisor features such as virtual devices (vdevs).

  • Typographical Conventions, Support, and Licensing

    This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

Optimizing the Platform Application Stack

QNX SDP8.0Boot Optimization GuideDeveloper

This chapter present optimization techniques you can apply in the bootup sequence at, and after, the boot script.

These techniques include:

  • Reorder the startup program
  • Make careful use of the default boot script
  • Consider the placement of waitfor statements
Page updated: August 11, 2025