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SQLSERVER中的资源调控器

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Jun 07, 2016 pm 05:39 PM

sqlserverresource

SQLSERVER中的资源调控器转载自：资源调控器是sql server 2008新增的功能，可以限制某些用户访问sql server所消耗的cpu、内存资源或是对某个库访问所消耗的cpu、内存资源,可以在SQL Server 的 Enterprise Edition、Developer Edition 和 Evaluation Editi

SQLSERVER中的资源调控器

转载自：

资源调控器是sql server 2008新增的功能，可以限制某些用户访问sql server所消耗的cpu、内存资源或是对某个库访问

所消耗的cpu、内存资源,可以在SQL Server 的 Enterprise Edition、Developer Edition 和 Evaluation Edition中使用。

配置资源调控器基本分为以下步骤：

（1）创建并配置一个资源调控器资源池，发生 CPU 争用时，，该资源池将限制分配给资源池中的请求的最大平均 CPU 带宽。

（2）创建并配置一个使用该池的资源调控器工作负荷组。

（3）创建一个“分类器函数”，它是一个用户定义函数 (UDF)，其返回值供资源调控器用来对会话进行分类，

以便将它们路由到适当的工作负荷组。

（4）将分类器函数注册到资源调控器。

（5）将更改应用于资源调控器进行配置。

你可以使用IS_MEMBER()、APP_NAME()、SUSER_SNAME()、CONNECTIONPROPERTY()等函数在分类器函数里编写您的业务逻辑

msdn中的示例

本测试示例是限制某查询用户USER_READONLY限制cpu最大为10%.

master RESOURCE POOL pMAX_CPU_PERCENT_10 WITH (MAX_CPU_PERCENT = 10) WORKLOAD GROUP gMAX_CPU_PERCENT_10 USING pMAX_CPU_PERCENT_10; master rgclassifier_MAX_CPU ( ) 18 RETURNS SYSNAME 19 WITH SCHEMABINDING SYSNAME () ;; ; Resource Governor With(Classifier_Function=dbo.rgclassifier_MAX_CPU); RESOURCE GOVERNOR RECONFIGURE; , , , SYS. master LOGIN USER_READONLY (*) FROM sys.tables master WORKLOAD GROUP gMAX_CPU_PERCENT_10 RESOURCE GOVERNOR RECONFIGURE; RESOURCE POOL pMAX_CPU_PERCENT_10 RESOURCE GOVERNOR RECONFIGURE; RESOURCE GOVERNOR WITH (CLASSIFIER_FUNCTION= null); RESOURCE GOVERNOR RECONFIGURE; RESOURCE GOVERNOR DISABLE; .

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