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Datapath CPU 21 - Utilization above threshold

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  • 1.  Datapath CPU 21 - Utilization above threshold

    MVP
    Posted May 25, 2016 02:54 PM

    Good afternoon,

     

    Looking for some insight here. I already have a TAC case opened, but was hoping someone on here might have experienced something like this before and could provide some information. We are seeing numerous CPU spikes on a daily basis all coming from the fpapps process. I know fpapps is used for L2/L3 connectivity to the controller, but don't know what could be causing these constant spikes. They happen at random intervals, but are always exactly 60 seconds, up until recently we had a few that were 180 seconds. I'm hoping someone can help, below are the most recent logs:

     

    May 25 12:33:55 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:12%).
    May 25 13:11:58 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:97%).
    May 25 13:12:58 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:17%).
    May 25 13:16:58 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:96%).
    May 25 13:17:58 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:14%).
    May 25 13:18:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:92%).
    May 25 13:19:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:9%).
    May 25 13:21:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:99%).
    May 25 13:24:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:13%).
    May 25 13:26:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:99%).
    May 25 13:29:59 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:9%).
    May 25 13:34:00 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has exceeded 70% threshold (actual:99%).
    May 25 13:35:00 :399838: <WARN> |fpapps| Resource 'Datapath CPU 21' has dropped below 70% threshold (actual:9%).

     

     

    Controller is 7220 with AOS 6.3.1.16. Handling about 512 APs and around 3700 clients. This appears to have been happening for at least a month before it was noticed, not currently affecting client or APs, but don't want to get to that point.

     

    Thanks.



  • 2.  RE: Datapath CPU 21 - Utilization above threshold

    Posted Mar 09, 2024 04:11 AM

    Hello, don't suppose you have any recollection of how this datapath problem was rectified do you. Similar problem here, only the cpu stays above 90%.

    Thanks.



    ------------------------------
    Nathan
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  • 3.  RE: Datapath CPU 21 - Utilization above threshold

    EMPLOYEE
    Posted Mar 09, 2024 09:27 AM

    Either a bug or you've got a lot of traffic going through the controller with the same source and destination.

    Your best bet is going to be opening a case with TAC.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------



  • 4.  RE: Datapath CPU 21 - Utilization above threshold

    Posted Mar 10, 2024 04:32 AM

    Thanks Carson.
    For reference 3 clusters, 10 controllers, all doing the same thing at the exact same time. Friday around 4pm until this morning (Sunday) 2am. And then back to normal.
    How would I spot traffic with the same source:destination on the controller? And what would do that?
    I do have show tech-support from one cluster yesterday when the cpu was red-lining, and again just now when it's back down to normal. I opened a case with our partner yesterday morning.

    Thanks.

    Nathan.



    ------------------------------
    Nathan
    ------------------------------



  • 5.  RE: Datapath CPU 21 - Utilization above threshold

    EMPLOYEE
    Posted Mar 10, 2024 12:46 PM

    For something that widespread, the traffic would almost have to be multicast.  Do you have broadcast/multicast controls enabled on your WLANs?  What about the interfaces?



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------



  • 6.  RE: Datapath CPU 21 - Utilization above threshold

    MVP
    Posted Mar 11, 2024 08:15 AM

    Unless you are running AOS 6.3.x.x , I doubt any solution would apply to your case anyway. AOS 8.x.x was a complete greenfield rewrite. 



    ------------------------------
    Bruce Osborne ACCP ACMP
    Liberty University

    The views expressed here are my personal views and not those of my employer
    ------------------------------



  • 7.  RE: Datapath CPU 21 - Utilization above threshold

    Posted Mar 11, 2024 09:06 AM

    My AC 7005 at home sometimes has similar alarms, but it does not affect the network. Your version is too low. I think I should contact tac again after the upgrade. I look forward to your follow-up.



    ------------------------------
    If my post was useful, please Accept Solution and Give Kudos.

    leo ma

    ACMX
    ------------------------------



  • 8.  RE: Datapath CPU 21 - Utilization above threshold