Application.QuantumDuration Property

Gets or sets a value that indicates the length of time for a generator quantum, which determines how frequently the generator attempts to process work.

命名空间: Microsoft.SqlServer.Management.Nmo
程序集: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)

语法

声明
Public Property QuantumDuration As TimeSpan

public TimeSpan QuantumDuration { get; set; }

public:
property TimeSpan QuantumDuration {
    TimeSpan get ();
    void set (TimeSpan value);
}

/** @property */
public TimeSpan get_QuantumDuration ()

/** @property */
public void set_QuantumDuration (TimeSpan value)

public function get QuantumDuration () : TimeSpan

public function set QuantumDuration (value : TimeSpan)

属性值

A TimeSpan object that specifies the generator quantum duration.

备注

已更新的文本：2005 年 12 月 5 日

If you use the Application(Instance,String) constructor, the default value is 60 seconds. If you use the default constructor, you must set this property.

The application quantum duration controls how often the generator fires rules to generate notifications. Shorter quantum durations generate notifications more often, but require more resources. You need to balance the need for timely notifications with the processing load placed on the server by running the rules more frequently. For more information, see 指定生成器量程持续时间.

示例

The following examples show how to set all application execution settings, including the quantum duration:

// Define application execution settings
myApplication.QuantumDuration = new TimeSpan(0, 0, 15);
myApplication.PerformanceQueryInterval = new TimeSpan(0, 0, 5);
myApplication.SubscriptionQuantumLimit = 1;
myApplication.ChronicleQuantumLimit = 1;
myApplication.VacuumRetentionAge = new TimeSpan(0, 0, 1);
myApplication.LogBeforeDeliveryAttempts = false;
myApplication.LogNotificationText = false;
myApplication.LogStatusInfo = false;
myApplication.EventThrottle = 500;
myApplication.NotificationThrottle = 500;
myApplication.SubscriptionThrottle = 500;
myApplication.ProcessEventsInOrder = false;

' Define application execution settings
myApplication.QuantumDuration = New TimeSpan(0, 0, 15)
myApplication.PerformanceQueryInterval = New TimeSpan(0, 0, 5)
myApplication.SubscriptionQuantumLimit = 1
myApplication.ChronicleQuantumLimit = 1
myApplication.VacuumRetentionAge = New TimeSpan(0, 0, 1)
myApplication.LogBeforeDeliveryAttempts = False
myApplication.LogNotificationText = False
myApplication.LogStatusInfo = False
myApplication.EventThrottle = 500
myApplication.NotificationThrottle = 500
myApplication.SubscriptionThrottle = 500
myApplication.ProcessEventsInOrder = False

线程安全

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

请参阅

参考

Application Class
Application Members
Microsoft.SqlServer.Management.Nmo Namespace

其他资源

指定生成器量程持续时间
QuantumDuration Element for ApplicationExecutionSettings (ADF)