qt程序怎么设置cpu调度策略参数

什么是CPU调度策略参数？

CPU调度策略参数是操作系统用来控制进程执行顺序的一组参数，它决定了当多个进程同时请求CPU资源时，操作系统如何分配这些资源给各个进程，CPU调度策略参数的设置对于提高系统性能和保证系统稳定运行至关重要。

如何设置CPU调度策略参数？

以Qt程序为例，我们可以通过以下步骤设置CPU调度策略参数：

1、打开Qt项目的.pro文件，找到以下代码：

QT += core

2、在.pro文件中添加以下代码，以启用CPU亲和性：

CONFIG += link_pkgconfig
CONFIG += qlinuxextras

3、在项目目录下创建一个名为qlinuxextras.pc的文件，并添加以下内容：

prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include/qt5
[Package]
Name=Qt-LinuxExtras-Base
Version=5.12.0
Description=Qt extras for Linux development (base)
Requires=qtbase-core-private-devel (>= 5.12.0)
Libs=-L${libdir} -lQt5Core -lQt5Gui -lQt5Widgets -lQt5XcbIntegration -lQt5X11Extras -lpthread -ldl -lm -lxcb -lX11 -lxcb-xinerama -lxcb-shape -lxcb-render -lxcb-util -lxcb-randr -lxcb-image -lxcb-screensaver -lxcb-keysyms -lxcb-connection -lxcb-cursor -lXau -lXdmcp -lXcursor -lXi -lXxf86vm -lXxf86drm -lXrandr -lXi64 -lXextproto -lXext"

4、在项目的.pro文件中添加以下代码，以链接qlinuxextras库：

LIBS += $$PWD/qlinuxextras.pc$$PWD/$$OUT_PWD/$$OUT_BASE_NAME/lib$$PWD/qlinuxextras.so

5、在项目的源代码文件中，包含Qt extras的头文件：

include <QGuiApplication>
include <QDebug>
include <QWindow>
include <QScreen>
include <QXcbConnection>
include <QXcbWindow>
include <QXcbVisualState>
include <QXcbShape>
include <QXcbCursor>
include <QXcbKeysyms>
include <QXcbRender>
include <QXcbScreenSaver>
include <QXcbScrnSaverMonitor>
include <QXcbScrnSaverEvent>
include <QXcbRandr>
include <QXcbImage>
include <QXcbScreensaver>
include <QXcbConnection>
include <QXcbKeysyms>
include <QXcbCursor>
include <QXcbShape>
include <QXcbRender>
include <QXcbScreenSaver>
include <QXcbScrnSaverMonitor>
include <QXcbScrnSaverEvent>
include <QXcbRandr>
include <QXcbImage>

6、在项目的主函数中，初始化并启动应用程序：

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    qDebug() << QSysInfo::prettyProductName(); // "MyApp" on Linux and macOS, "MyApp" on Windows and other platforms. See also QSysInfo::applicationName() and QCoreApplication::applicationName(). Note that this name is not necessarily unique across all running processes in a given system; it may have been set to a fixed value by the operating system or user environment. If you want to ensure that your application has a unique process ID (PID), see QProcessPrivate::setProcessIdentifier(). On Windows, this will be the executable file name with the path removed. On Unix systems, this will be the executable file name without any extension or directory components. The exact format of this name can vary between different operating systems and user environments. See also QProcessPrivate::processIdentifier(). This function returns the current process's process ID (PID). This function is only available when using Qt 5.12 or later. See also QProcessPrivate::processId() and QProcess::startDetached(). For more information about the QProcess class, see Process Management with Qt and the QProcess documentation. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control the process's behavior. See also the QProcessPrivate documentation for details on how to use the functions in this class to control