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)

Enable Developer Performance Dashboard in Sharepoint 2010

when I developed a ListEvent in the Custom List. but i really want to know how is the event feature perform

in shaepoint 2010.

here is a line you can execute in the sharepoint 2010 server via CMD

"C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN\stsadm.exe" -o setproperty -pn developer-dashboard -pv OnDemand

then restart the iis to allow the sharepoint to enable this feature.

after you click on the library, you can see a ICON in the top righ corner. when you cllick on the icon.
the dashboard will be shown in the button of the page with all performance information. those detail
 information will be great helpful for trouble shooting when you encounter performance related issue.