就讲讲监控那些值，基线抓的是那些值。如何做告警

环境：windows 2008r2,sql server 2008r2 sp1

性能基线：

　　cpu：

　　　　\Processor(_Total)\% Processor Time

　　　　\Processor(_Total)\% Privileged Time

　　　　\SQLServer:SQL Statistics\Batch Requests/sec

　　　　\SQLServer:SQL Statistics\SQL Compilations/sec

　　　　\SQLServer:SQL Statistics\SQL Re-Compilations/sec

　　　　\System\Processor Queue Length

　　　　\System\Context Switches/sec

　　Memory:

　　　　\Memory\Available Bytes

　　　　\Memory\Pages/sec

　　　　\Memory\Page Faults/sec

　　　　\Memory\Pages Input/sec

　　　　\Memory\Pages Output/sec

　　　　\Process(sqlservr)\Private Bytes

　　　　\SQLServer:Buffer Manager\Buffer cache hit ratio

　　　　\SQLServer:Buffer Manager\Page life expectancy

　　　　\SQLServer:Buffer Manager\Lazy writes/sec

　　　　\SQLServer:Memory Manager\Memory Grants Pending

　　　　\SQLServer:Memory Manager\Target Server Memory (KB)

　　　　\SQLServer:Memory Manager\Total Server Memory (KB)

　　Disk:

　　　　\PhysicalDisk(_Total)\% Disk Time

　　　　\PhysicalDisk(_Total)\Current Disk Queue Length

　　　　\PhysicalDisk(_Total)\Avg. Disk Queue Length

　　　　\PhysicalDisk(_Total)\Disk Transfers/sec

　　　　\PhysicalDisk(_Total)\Disk Bytes/sec

　　　　\PhysicalDisk(_Total)\Avg. Disk sec/Read

　　　　\PhysicalDisk(_Total)\Avg. Disk sec/Write

　　SQL Server:

　　　　\SQLServer:Access Methods\FreeSpace Scans/sec

　　　　\SQLServer:Access Methods\Full Scans/sec

　　　　\SQLServer:Access Methods\Table Lock Escalations/sec

　　　　\SQLServer:Access Methods\Worktables Created/sec

　　　　\SQLServer:General Statistics\Processes blocked

　　　　\SQLServer:General Statistics\User Connections

　　　　\SQLServer:Latches\Total Latch Wait Time (ms)

　　　　\SQLServer:Locks(_Total)\Lock Timeouts (timeout > 0)/sec

　　　　\SQLServer:Locks(_Total)\Lock Wait Time (ms)

　　　　\SQLServer:Locks(_Total)\Number of Deadlocks/sec

　　　　\SQLServer:SQL Statistics\Batch Requests/sec

　　　　\SQLServer:SQL Statistics\SQL Re-Compilations/sec

以上是性能基线监控的信息，当然性能警告也是监控这些信息，其中的阀值是根据基线抓取后体现。

关于性能警告我是使用powershell 写了一个脚本，运行在SQL Agent 中。如果出现警告，就通过dbmail 发送邮件

关于powershell 脚本和一些配置信息看如下：

$server = "(local)"$uid = "sa"$db="master"$pwd="pwd"$mailprfname = "sina"$recipients = "xxxxx@qq.com"$subject = "Proformance Alter"$computernamexml = "f:\computername.xml"$alter_cpuxml = "f:\alter_cpu.xml"function GetServerName($xmlpath){    $xml = [xml] (Get-Content $xmlpath)    $return = New-Object Collections.Generic.List[string]    for($i = 0;$i -lt $xml.computernames.ChildNodes.Count;$i++)    {        if ( $xml.computernames.ChildNodes.Count -eq 1)        {            $cp = [string]$xml.computernames.computername        }        else        {            $cp = [string]$xml.computernames.computername[$i]        }        $return.Add($cp.Trim())    }    $return}function GetAlterCounter($xmlpath){    $xml = [xml] (Get-Content $xmlpath)    $return = New-Object Collections.Generic.List[string]    $list = $xml.counters.Counter    $list}function CreateAlter($message){    $SqlConnection = New-Object System.Data.SqlClient.SqlConnection     $CnnString ="Server = $server; Database = $db;User Id = $uid; Password = $pwd"     $SqlConnection.ConnectionString = $CnnString     $CC = $SqlConnection.CreateCommand();     if (-not ($SqlConnection.State -like "Open")) { $SqlConnection.Open() }         $cc.CommandText=" EXEC msdb..sp_send_dbmail             @profile_name  = '$mailprfname'            ,@recipients = '$recipients'            ,@body = '$message'            ,@subject = '$subject'"     $cc.ExecuteNonQuery()|out-null     $SqlConnection.Close();}$names = GetServerName($computernamexml)$pfcounters = GetAlterCounter($alter_cpuxml)foreach($cp in $names){    $p = New-Object Collections.Generic.List[string]    $report = ""    foreach ($pfc in $pfcounters)    {        $b = ""        $counter ="\\"+$cp+$pfc.get_InnerText().Trim()        $p.Add($counter)            }    $count = Get-Counter $p    for ($i = 0; $i -lt $count.CounterSamples.Count; $i++)    {        $v = $count.CounterSamples.Get($i).CookedValue        $pfc = $pfcounters[$i]        #$pfc.get_InnerText()        $b = ""        $lg = ""        if($pfc.operator -eq "lt")        {            if ($v -ge [double]$pfc.alter)                {
    $b = "alter"                $lg = "Greater Than"}        }        elseif ($pfc.operator -eq "gt")        {            if( $v -le [double]$pfc.alter)                {
    $b = "alter"                $lg = "Less Than"}        }        if($b -eq "alter")        {            $path = "\\"+$cp+$pfc.get_InnerText()                        $item = "{0}:{1};{2} Threshold:{3}" -f $path,$v.ToString(),$lg,$pfc.alter.Trim()            $report += $item + "`n"        }            }    if($report -ne "")    {        #生产警告 参数 计数器，阀值，当前值        CreateAlter $report    }}

其中涉及到2个配置文件：computernamexml,alter_cpuxml分别如下：

             
      
                       fanr-pc        
      
     

           
      
       \Processor(_Total)\% Processor Time
              
      
       \Processor(_Total)\% Privileged Time
              
      
       \SQLServer:SQL Statistics\Batch Requests/sec
              
      
       \SQLServer:SQL Statistics\SQL Compilations/sec
              
      
       \SQLServer:SQL Statistics\SQL Re-Compilations/sec
              
      
       \System\Processor Queue Length
              
      
       \System\Context Switches/sec
      
     

其中 alter 就是阀值，如第一条，如果 阀值 > 性能计数器值，就会发出警告。