Can you limit CPU usage by user or application


  • Hi there,

    I've had a site today that had ground to a halt because one user's winword.exe on terminal server was using almost 90% CPU making the server basically unavailable for everyone.

    Is it possible to limit the CPU used by each user or application to a maximum of 10% or something?

    This is not the first site where I've seen this kind of issue. They were using Office 2003 on Server 2008 R2 RDS.





    Monday, November 8, 2010 3:02 PM

All replies

  • Hello,

    When using W2K8 RDS/Terminal Services there the the Windows System Resource Manager. From there you are able to limit CPU usage on a per user or application level. It is a W2K8 feature you will need to add through the Server Manager.


    regards Robert Maijen
    • Proposed as answer by JamesNT Tuesday, November 29, 2011 2:15 AM
    Monday, November 8, 2010 3:15 PM
  • That's fantastic Robert. I'll give that a try right away.




    • Proposed as answer by Diego Meda Wednesday, June 14, 2017 8:02 PM
    Monday, November 8, 2010 5:01 PM
  • Hi, Kieran,

    You're seeing this behavior on WS08 R2, not on WS08?

    The default behavior on WS08 R2 is to have Dynamic Fair Share Scheduling enabled, which works with the kernel-level scheduler to allocate processor time to each session (see link for more details). Can you give us some details about the circumstances under which this is happening?




    Christa Anderson [MSFT] Want the Windows Server 2008 Terminal Services Resource Kit? Click here.
    Tuesday, November 9, 2010 1:18 AM
  • How about for those of us that are stuck on Windows Server 2003 R2 Terminal Services for the time being?  I have the same issue. 


    "If you have to ask about various operating system limits, you're probably doing something wrong." -Raymond Chen
    Tuesday, November 15, 2011 7:56 PM
  • JamesNT - you might want to give this a try:

    • Edited by Unoh Thursday, November 24, 2011 6:00 PM
    • Proposed as answer by JamesNT Tuesday, November 29, 2011 2:16 AM
    Thursday, November 24, 2011 5:58 PM
  • checkout "Process Arbiter" tool. It's free.

    It does not throttle CPU but changes process priorities on the fly.

    I have used it in similar situations, to keep servers responsive.

    Think about a kind of broadband antibiotic for servers which struggles with CPU intensive, crazy processes. :-) 

    • Proposed as answer by JamesNT Tuesday, November 29, 2011 2:16 AM
    Thursday, November 24, 2011 6:35 PM