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磁盘读取延迟

Microsoft.SQLServer.2012.Database.DiskReadLatencyMonitor (UnitMonitor)

针对 2012 数据库的磁盘读取延迟监视器

Knowledge Base article:

摘要

该监视器检查磁盘读取操作是否存在延迟并且引发警报。

该警报指示从磁盘读取数据所用的平均时间在某个时间段中已大于阈值。

原因

该问题可能是由于磁盘瓶颈或磁盘争用导致的。

解决方法

若要解决此错误，请执行下列一项或多项操作:

SQL Server 最佳做法文章(磁盘配置最佳做法和常见错误)

http://msdn.microsoft.com/zh-cn/library/cc966412.aspx#EEAA

Element properties:

TargetMicrosoft.SQLServer.2012.Database
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledFalse
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeMicrosoft.SQLServer.2012.Database.DiskReadLatency.MonitorType
RemotableTrue
AccessibilityPublic
Alert Message
SQL 数据库 2012 磁盘读取延迟过高
计算机“{2}”装入点“{3}”上 SQL 实例“{1}”中的数据库“{0}”具有过高的磁盘读取延迟“{4}”。有关详细信息，请参阅“警报上下文”选项卡。
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SQLServer.2012.Database.DiskReadLatencyMonitor" Accessibility="Public" Enabled="false" Target="SQL2012Core!Microsoft.SQLServer.2012.Database" ParentMonitorID="SystemHealth!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Microsoft.SQLServer.2012.Database.DiskReadLatency.MonitorType" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServer.2012.Database.DiskReadLatencyMonitor.AlertMessage">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="SQL!Microsoft.SQLServer.Database"]/DatabaseName$</AlertParameter1>

      <AlertParameter2>$Target/Host/Property[Type="SQL!Microsoft.SQLServer.ServerRole"]/InstanceName$</AlertParameter2>

      <AlertParameter3>$Target/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</AlertParameter3>

      <AlertParameter4>$Data/Context/ObjectName$</AlertParameter4>

      <AlertParameter5>$Data/Context/Value$</AlertParameter5>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Normal" MonitorTypeStateID="Normal" HealthState="Success"/>

    <OperationalState ID="Error" MonitorTypeStateID="Error" HealthState="Error"/>

  </OperationalStates>

  <Configuration>

    <IntervalSeconds>300</IntervalSeconds>

    <TimeoutSeconds>200</TimeoutSeconds>

    <Threshold>40</Threshold>

    <NumSamples>6</NumSamples>

    <SyncTime/>

  </Configuration>

</UnitMonitor>