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CPU Spikes stalling IIS frequently

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New Around Here


Posts:1
New Around Here

    Hi,

    Can anyone help in diagnosing and resolving the root cause that is creating intermittent CPU spikes on my IIS server. We are running 10.9.1 version. Even if it is a paid service do let me know.

    Regards

    Rajesh



    Veteran Member


    Posts:582
    Veteran Member

      Posted By RajeshP on 11/15/2022 1:11 AM

      Hi,

      Can anyone help in diagnosing and resolving the root cause that is creating intermittent CPU spikes on my IIS server. We are running 10.9.1 version. Even if it is a paid service do let me know.

      Regards

      Rajesh

      Any monitoring software you can procure should help you with this.  Some of the most popular ones that we know and see are listed below (in no particular order).  

      There are at least hundreds more out there... Also, if you're on any cloud provider's platform, they should have some built-in options for you to turn on.  In many cases, it doesn't require much more than that.  

       

      Will Strohl

      Upendo Ventures DNN experts since 2003
      Official provider of the DNN-based E-Commerce w/ Hotcakes Commerce Cloud and SLA support


      Veteran Member


      Posts:582
      Veteran Member

        Oh, and it might be time for you to do some routine maintenance. Usually, performance is something that's been an issue for a long time, and it finally began to be visibly apparent.  These kinds of things should be done semi-regularly.  

        Some maintenance tasks to perform include:  

        • Reviewing and potentially archiving log files in the /Portals/_default/Logs/ folder.    
        • Reviewing and potentially archiving log entries in the Admin Log.  
        • Review the log files for any and all exceptions and fix as many as you can.  
        • Uninstall any extensions that are no longer being used.  
        • Rebuilding/reorganizing the index of the database.  
        • Moving large portal folders to a cloud folder provider.  
        • Deleting the /Install/Temp/ folder.  
        • Increase caching in the DNN performance settings. 
        • Increase/improve caching with a CDN/WAF (e.g., CloudFlare, Imperva, etc.).  
        • Upgrade all extensions currently installed on the website. 
        • Upgrade DNN to the most current version.  
        • Update any custom code to use the latest DNN API endpoints.  
        • Remove dead code from the web.config (usually done by performing a diff/merge).  
        • Remove dead code from your custom extensions.  
        Will Strohl

        Upendo Ventures DNN experts since 2003
        Official provider of the DNN-based E-Commerce w/ Hotcakes Commerce Cloud and SLA support


        Growing Member


        Posts:43
        Growing Member

          As well as all of Will's very helpful info above, check for errors in your server's Event Viewer, particularly for multiple System Interrupts. If you get many frequent errors from failing hardware such as a drive or drive controller it can hit the CPU heavily while trying to write to the system event logs.
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