tests/Test-SqlDbResourceWaits.ps1
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function Test-SqlDbResourceWaits { [CmdletBinding()] param ( [parameter()][string] $TestName = "SQL Database Resource Wait Times", [parameter()][string] $TestGroup = "operation", [parameter()][string] $Description = "Check for excessive resource wait times", [parameter()][hashtable] $ScriptParams ) try { $startTime = (Get-Date) [System.Collections.Generic.List[PSObject]]$tempdata = @() # for detailed test output to return if needed $stat = "PASS" $except = "WARNING" $msg = "No issues found" $query = "SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [CPUWaits_Pct], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [ResourceWaits_Pct] FROM sys.dm_os_wait_stats OPTION (RECOMPILE)" $res = Get-CmSqlQueryResult -Query $query -Params $ScriptParams if ($res.CPUWaits_Pct -gt 10 -or $res.ResourceWaits_Pct -gt 50) { $stat = $except $msg = "Excessive CPU waits: CPU=$($res.CPUWaits_Pct) Resources=$($res.ResourceWaits_Pct)" $res | Foreach-Object { $tempdata.Add( [pscustomobject]@{ SqlInstance = $ScriptParams.SqlInstance CPUWaitsPct = $($_.CPUWaits_Pct) ResourceWaitsPct = $($_.ResourceWaits_Pct) } ) } } } catch { $stat = 'ERROR' $msg = $_.Exception.Message -join ';' } finally { Write-Output $([pscustomobject]@{ TestName = $TestName TestGroup = $TestGroup TestData = $tempdata Description = $Description Status = $stat Message = $msg RunTime = $(Get-RunTime -BaseTime $startTime) Credential = $(if($ScriptParams.Credential){$($ScriptParams.Credential).UserName} else { $env:USERNAME }) }) } } |