Strange 100% CPU issue with asp_wp

Discussion in 'ASP .Net' started by Rich Denis, Aug 5, 2004.

  1. Rich Denis

    Rich Denis Guest

    Hello,
    We are having some issues with our .NET web applications. Every so
    often a computer will peg its CPU at 100% for some period of time. I am
    told anywhere between 30mins and 2 hours. I have seen some kb articles
    about asp_wp and 100% but I do not believe that is our issues. I am
    fairly certain that the probelm is caused by one of the applications
    running on the server. Ok so here are the questions.

    Are there any perfmons that can be used to determine which asp.net app
    is causing the cpu to spike up?

    Is there any code that can be written to see what is happening?

    What I am trying to accomplish is to determine the offending
    application. What toold exist?

    Thanks

    Rich
    Rich Denis, Aug 5, 2004
    #1
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  2. Hi Rich

    As for the 100% cpu and troubleshooting on multi-web app server problem.
    There are different options which depend on the server's OS version. Is
    your webserver win2k server or win2003 server?

    If you're using the Win2k server, since the processModel are the fixed
    isolation mode. All the web application shared the same workerprocess.
    There hasn't any buildin means or tools to determine which app caues the
    problem. We have to test them one by one.

    However , on win2k3 box, the IIS6 has provided a new workerprocess
    isolation model( application pool model) which can let use isolate each web
    application in a separate workproesss. You can have a look at the following
    reference discussing on this:

    #Chapter 20 ┬ĘC Hosting Multiple Web Applications
    http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/ht
    ml/thcmch20.asp


    Thanks.

    Regards,

    Steven Cheng
    Microsoft Online Support

    Get Secure! www.microsoft.com/security
    (This posting is provided "AS IS", with no warranties, and confers no
    rights.)

    Get Preview at ASP.NET whidbey
    http://msdn.microsoft.com/asp.net/whidbey/default.aspx
    Steven Cheng[MSFT], Aug 6, 2004
    #2
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  3. Rich Denis

    Rich Denis Guest

    Thanks for the feedback. This is a W2K server hosting these
    applications. So I am left with the testing of individual applications.
    Would this testing be done in a traditional manner (ie click and watch)?
    If so I was hoping for something a little more than that. Any other
    ideas? Thanks

    Rich

    In article <9LvS$>, you say...
    > Hi Rich
    >
    > As for the 100% cpu and troubleshooting on multi-web app server problem.
    > There are different options which depend on the server's OS version. Is
    > your webserver win2k server or win2003 server?
    >
    > If you're using the Win2k server, since the processModel are the fixed
    > isolation mode. All the web application shared the same workerprocess.
    > There hasn't any buildin means or tools to determine which app caues the
    > problem. We have to test them one by one.
    >
    > However , on win2k3 box, the IIS6 has provided a new workerprocess
    > isolation model( application pool model) which can let use isolate each web
    > application in a separate workproesss. You can have a look at the following
    > reference discussing on this:
    >
    > #Chapter 20 =3FC Hosting Multiple Web Applications
    > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/ht
    > ml/thcmch20.asp
    >
    >
    > Thanks.
    >
    > Regards,
    >
    > Steven Cheng
    > Microsoft Online Support
    >
    > Get Secure! www.microsoft.com/security
    > (This posting is provided "AS IS", with no warranties, and confers no
    > rights.)
    >
    > Get Preview at ASP.NET whidbey
    > http://msdn.microsoft.com/asp.net/whidbey/default.aspx
    >
    >
    >
    >
    >
    Rich Denis, Aug 6, 2004
    #3
  4. Hi Rich,

    Thanks for your followup. As for such problem, if you have found the web
    application which cause the problem, I think you'd better continue to
    narrow down the problem to some certain web pages or component which may be
    the root cause. Also, you can have a check directly in the code logic to
    see whether there is any potential issues. Currnetly there're any
    particular tools focus on such problem.
    In addition, if you still feel confused on this issue, I recommend that you
    request a regular case on it since intensive troubleshooting(such as Dump
    analyse) would be done quickly and effectively with direct assistance from
    a Microsoft Support Professional through Microsoft Product Support
    Services.

    Thanks.


    Regards,

    Steven Cheng
    Microsoft Online Support

    Get Secure! www.microsoft.com/security
    (This posting is provided "AS IS", with no warranties, and confers no
    rights.)

    Get Preview at ASP.NET whidbey
    http://msdn.microsoft.com/asp.net/whidbey/default.aspx
    Steven Cheng[MSFT], Aug 9, 2004
    #4
  5. Rich Denis

    Rich Denis Guest

    Thanks Steven. I was afraid there would be no way of tracking this
    down. If we can't find the app we will contact MPS. Rich

    In article <Cvm$>, v-
    says...
    > Hi Rich,
    >
    > Thanks for your followup. As for such problem, if you have found the web
    > application which cause the problem, I think you'd better continue to
    > narrow down the problem to some certain web pages or component which may be
    > the root cause. Also, you can have a check directly in the code logic to
    > see whether there is any potential issues. Currnetly there're any
    > particular tools focus on such problem.
    > In addition, if you still feel confused on this issue, I recommend that you
    > request a regular case on it since intensive troubleshooting(such as Dump
    > analyse) would be done quickly and effectively with direct assistance from
    > a Microsoft Support Professional through Microsoft Product Support
    > Services.
    >
    > Thanks.
    >
    >
    > Regards,
    >
    > Steven Cheng
    > Microsoft Online Support
    >
    > Get Secure! www.microsoft.com/security
    > (This posting is provided "AS IS", with no warranties, and confers no
    > rights.)
    >
    > Get Preview at ASP.NET whidbey
    > http://msdn.microsoft.com/asp.net/whidbey/default.aspx
    >
    >
    Rich Denis, Aug 11, 2004
    #5
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