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PowerPoint rate of BroadcastGetData requests too high (Microsoft PowerPoint Web App)

Office Web Apps
 

Applies to: PowerPoint Web App Preview

Topic Last Modified: 2010-02-26

Alert Name:   PowerPoint rate of BroadcastGetData requests too high

Event ID:   No event ID

Summary:   A high rate of BroadcastGetData requests indicates that a large number of users are viewing PowerPoint Broadcasts. This means PowerPoint Broadcast viewers may be using more CPU time in front-end Web servers than is optimal. This can reduce overall server performance if total CPU usage is high.

Symptoms:   Users of this Microsoft SharePoint Server 2010 farm may experience very poor performance. If this is the case you should take steps to correct the problems that might be causing poor performance. Otherwise, this monitor only serves as a warning and you do not need to take further action.

Cause:   One or more of the following might be the cause:

  • A large number of users are viewing PowerPoint Broadcasts.

  • PowerPoint Broadcast users poll the server too often.

    If users of this SharePoint farm experience poor performance, compare CPU usage on the front-end Web servers to the rate of BroadcastGetData requests. If spikes in CPU usage occur only with high rates of BroadcastGetData requests, you should increase the PowerPoint Broadcast polling interval. This will decrease the amount of traffic generated by PowerPoint Broadcast viewers.

Resolution:   Check the general availability of farm servers
  1. Check the availability of the farm servers by performing a PING command to each server and checking the response times.

Resolution:   Increase the PowerPoint Broadcast polling interval
  1. Verify that you meet the following minimum requirements: See Add-SPShellAdmin.

  2. On the Start menu, click All Programs.

  3. Click Microsoft SharePoint 2010 Products.

  4. Click SharePoint 2010 Management Shell.

  5. At the Windows PowerShell command prompt, type the following command:

    Set-SPPowerPointServiceApplication -Identity <ID> -BroadcastBrowserHealthyStatePollIntervalInMilliSeconds <N> 
    

    Where:

    • <ID> is name or ID of the Power Point service application.

    • <N> is number of milliseconds. The default interval is 1 second, and the next recommended value is 2 seconds. Increasing this interval beyond 2 seconds may negatively affect the end-user experience while viewing PowerPoint Broadcasts. This change will only affect new viewers of PowerPoint Broadcasts.

For more information, see Set-SPPowerPointServiceApplication.

Resolution:   Reset Internet Information Services on all front-end Web servers
  1. At the command prompt, type the following command, and then press ENTER:

    iisreset

Resolution:   Add another server to the farm
  1. If this failure keeps occurring even after you have followed the steps in all other resolutions, you should add a server to the farm to help load-balance the workload.

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