DNN Forums

Ask questions about your website to get help learning DNN and help resolve issues.

CPU Spikes stalling IIS frequently

Sort:
You are not authorized to post a reply.





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





      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.  

       






      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.  





        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.
          You are not authorized to post a reply.

          These Forums are dedicated to the discussion of DNN Platform.

          For the benefit of the community and to protect the integrity of the ecosystem, please observe the following posting guidelines:

          1. If you have (suspected) security issues, please DO NOT post them in the forums but instead follow the official DNN security policy
          2. No Advertising. This includes the promotion of commercial and non-commercial products or services which are not directly related to DNN.
          3. No vendor trolling / poaching. If someone posts about a vendor issue, allow the vendor or other customers to respond. Any post that looks like trolling / poaching will be removed.
          4. Discussion or promotion of DNN Platform product releases under a different brand name are strictly prohibited.
          5. No Flaming or Trolling.
          6. No Profanity, Racism, or Prejudice.
          7. Site Moderators have the final word on approving / removing a thread or post or comment.
          8. English language posting only, please.

          Would you like to help us?

          Awesome! Simply post in the forums using the link below and we'll get you started.

          Get Involved