Developer Dashboard in SharePoint 2010

The developer dashboard is a new feature in SharePoint 2010 this will help developers by giving additional performance and tracing information that can be used to debug and troubleshoot issues with page rendering time. It will give somewhat similar functionality of fiddler tool. The dashboard is turned off by default, but can be enabled via the object model or stsadm. Once enabled it will allow the following. 

1. Tracking infinite loops inside code within web parts 
2. Find out if pages are loading slowly.

This has three states ON, OFF and On demand. The following are the commands for each state

ON

STSADM -o setproperty -pn developer-dashboard -pv on 

OFF

STSADM -o setproperty -pn developer-dashboard -pv off 

ON DEMAND

This is very nice feature if you enable this mode you can make the dashboard enabled from SharePoint site itself whenever you need that

STSADM -o setproperty -pn developer-dashboard -pv ondemand

Note:  We can also log the performance of the custom code by wrapping the block of code in the using clause as below.

protected override void CreateChildControls()

{

    using (new SPMonitoredScope("My code block (WebPart1)"))

    {

        Thread.Sleep(50);

    }

}

 The above code will log the message in the Developer Dashboard.