Developer Dashboard in SharePoint 2010

Shyju
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Developer dashboard is one of the coolest feature in SharePoint 2010 and loved by the developer community. Developer dashboard can help in diagnosing various issues in a custom code.

Counters in developer dashboard

Per-Thread counters

Gives the following information of current thread with actual values

Execution Time
SPRequests Allocated
Number of SQL queries performed
Duration of SQL query
Query Text
URL
Current User
Start Time

Pre-Process counters

Global Heap Size
Total size of all native heaps
Native heap count
Active native heap count
Count of sharepoint operation in progress

Client Counters

Page Size

System Counter

Machine's available memory
Hard Page faults
Processor Utilization
Heap size of managed memory

How to use Monitor in Code?

Monitoring code is easy very easy with help of developer dashboard. First thing identify the portion of the code need real monitoring and wrap that code SPMonitorScope.

using (new SPMonitoredScope("TestScope"))
{
   //Code which needs to be monitored goes here
}

Another approach implement ISPScopedPerformanceMonitor Interface in your custom class and use it.

Enabling Developer Dashboard

By default Developer Dash Board is disabled so you need to enable it.

STSADM Command

Power shell Command

C# Code

Developer Dash Board in a custom Page

<Sharepoint:DeveloperDashboardLauncher
        ID="DeveloperDashboardLauncher"
        NavigateUrl="javascript:ToggleDeveloperDashboard()"
        runat="server"
        ImageUrl="/_layouts/images/fgimg.png"
        Text="<%$Resources:wss,multipages_launchdevdashalt_text%>"
        OffsetX=0
        OffsetY=78
        Height=16
        Width=16 />
<div id="DeveloperDashboard" class="ms-developerdashboard" />
<SharePoint:DeveloperDashboard runat="server" />

Read following articles about the this feature.

Using the Developer Dashboard

http://msdn.microsoft.com/en-us/library/ff512745.aspx

Using SPMonitoredScope

http://msdn.microsoft.com/en-us/library/ff512758.aspx