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Get-DbaIoLatency
Post
NAME Get-DbaIoLatency
SYNOPSIS
Displays IO subsystem latency statistics from sys.dm_io_virtual_file_stats. Works on SQL Server 2005 and above.
SYNTAX
Get-DbaIoLatency [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]> [[-SqlCredential]
<Pscredential>] [-EnableException <Switch>] [<CommonParameters>]
DESCRIPTION
This command is based off of Paul Randal's post "Advanced SQL Server performance tuning"
Returns both raw and aggregate information
Reference: https://www.sqlskills.com/blogs/paul/ho ... ql-server/
https://www.sqlskills.com/blogs/paul/ca ... riod-time/
PARAMETERS
-EnableException [<Switch>]
By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables
advanced scripting.
Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own
try/catch.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-SqlCredential [<Pscredential>]
Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory -
Integrated are all supported.
For MFA support, please use Connect-DbaInstance.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-SqlInstance [<Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>]
The SQL Server instance. Server version must be SQL Server version 2008 or higher.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
<CommonParameters>
This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer, PipelineVariable, and OutVariable. For more information, see
about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).
INPUTS
OUTPUTS
NOTES
Tags: IOLatency
Author: Patrick Flynn (@sqllensman)
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Get-DbaIoLatency -SqlInstance sql2008, sqlserver2012
Get IO subsystem latency statistics for servers sql2008 and sqlserver2012.
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>$output = Get-DbaIoLatency -SqlInstance sql2008 | Select-Object * | ConvertTo-DbaDataTable
Collects all IO subsystem latency statistics on server sql2008 into a Data Table.
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>'sql2008','sqlserver2012' | Get-DbaIoLatency
Get IO subsystem latency statistics for servers sql2008 and sqlserver2012 via pipline
-------------------------- EXAMPLE 4 --------------------------
PS C:\\>$cred = Get-Credential sqladmin
PS C:\\> Get-DbaIoLatency -SqlInstance sql2008 -SqlCredential $cred
Connects using sqladmin credential and returns IO subsystem latency statistics from sql2008
RELATED LINKS
https://dbatools.io/Get-DbaIoLatency
SYNOPSIS
Displays IO subsystem latency statistics from sys.dm_io_virtual_file_stats. Works on SQL Server 2005 and above.
SYNTAX
Get-DbaIoLatency [-SqlInstance] <Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]> [[-SqlCredential]
<Pscredential>] [-EnableException <Switch>] [<CommonParameters>]
DESCRIPTION
This command is based off of Paul Randal's post "Advanced SQL Server performance tuning"
Returns both raw and aggregate information
Reference: https://www.sqlskills.com/blogs/paul/ho ... ql-server/
https://www.sqlskills.com/blogs/paul/ca ... riod-time/
PARAMETERS
-EnableException [<Switch>]
By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables
advanced scripting.
Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own
try/catch.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-SqlCredential [<Pscredential>]
Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).
Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory -
Integrated are all supported.
For MFA support, please use Connect-DbaInstance.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
-SqlInstance [<Sqlcollaborative.Dbatools.Parameter.DbaInstanceParameter[]>]
The SQL Server instance. Server version must be SQL Server version 2008 or higher.
Required? false
Position? named
Default value
Accept pipeline input? False
Accept wildcard characters? false
<CommonParameters>
This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer, PipelineVariable, and OutVariable. For more information, see
about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).
INPUTS
OUTPUTS
NOTES
Tags: IOLatency
Author: Patrick Flynn (@sqllensman)
Website: https://dbatools.io
Copyright: (c) 2018 by dbatools, licensed under MIT
License: MIT https://opensource.org/licenses/MIT
-------------------------- EXAMPLE 1 --------------------------
PS C:\\>Get-DbaIoLatency -SqlInstance sql2008, sqlserver2012
Get IO subsystem latency statistics for servers sql2008 and sqlserver2012.
-------------------------- EXAMPLE 2 --------------------------
PS C:\\>$output = Get-DbaIoLatency -SqlInstance sql2008 | Select-Object * | ConvertTo-DbaDataTable
Collects all IO subsystem latency statistics on server sql2008 into a Data Table.
-------------------------- EXAMPLE 3 --------------------------
PS C:\\>'sql2008','sqlserver2012' | Get-DbaIoLatency
Get IO subsystem latency statistics for servers sql2008 and sqlserver2012 via pipline
-------------------------- EXAMPLE 4 --------------------------
PS C:\\>$cred = Get-Credential sqladmin
PS C:\\> Get-DbaIoLatency -SqlInstance sql2008 -SqlCredential $cred
Connects using sqladmin credential and returns IO subsystem latency statistics from sql2008
RELATED LINKS
https://dbatools.io/Get-DbaIoLatency