the beauty of Sharepoint 2013 Deveoper Dashboard

Microsoft introduced the developer Dashboard in SharePoint 2010, it is embedded in the page. which will help the developer trouble shooting the issue on the SharePoint page. the Developer DashBoard still is available in the SharePoint 2013 but with great improvement. The Developer DashBoard will be popup into
a separated page.

here is the screen of the SharePoint 2013 Developer DashBoard





Unfortunately it had been turn off by default. we must use the powershell script to turn it on


$DevDashboardSettings = [Microsoft.SharePoint.Administration.SPWebService]:: ` ContentService.DeveloperDashboardSettings
$DevDashboardSettings.DisplayLevel = 'On'
$DevDashboardsettings.Update()

after you execute the powershell script, then lauch the sharepoint web site, you should be able to spot an icon to launch the Developer DashBoard (I already circled the icon in red)