SQL Server 性能基线和监控

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 = "[email protected]"

$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：

<computernames>

        <computername>

                fanr-pc

        </computername>

</computernames>

<Counters>

      <Counter alter = "10" operator = "gt" >\Processor(_Total)\% Processor Time</Counter>

        <Counter alter = "10" operator = "gt" >\Processor(_Total)\% Privileged Time</Counter>

        <Counter alter = "10" operator = "gt" >\SQLServer:SQL Statistics\Batch Requests/sec</Counter>

        <Counter alter = "10" operator = "gt" >\SQLServer:SQL Statistics\SQL Compilations/sec</Counter>

        <Counter alter = "10" operator = "gt" >\SQLServer:SQL Statistics\SQL Re-Compilations/sec</Counter>

        <Counter alter = "10" operator=  "lt" >\System\Processor Queue Length</Counter>

        <Counter alter = "10" operator=  "lt" >\System\Context Switches/sec</Counter>

</Counters>

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。