SQL Server性能基线和监控简析
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： www.2cto.com
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: www.2cto.com
\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())
} www.2cto.com
$return
}
function GetAlterCounter($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.CreateComman