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FPC0 got high CPU Utilization over 90%

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  • 1.  FPC0 got high CPU Utilization over 90%

    Posted 12-15-2020 14:18

    Hello Experts,

    Many times our monitoring  system report the FPC0 got high CPU Utilization over 90%

    test@mx960-RR> show chassis fpc

                         Temp  CPU Utilization (%)   Memory    Utilization (%)

    Slot State            (C)  Total  Interrupt      DRAM (MB) Heap     Buffer

      0  Online            29     92          2       1024       46         31

      1  Online            27     45         0       1024       46         31

      2  Online            25    48         3       1024       46         30

      3  Online            24     52        0       1024       46         31


    what might be the route cause the trigger such this high Utilization ?


    thanks


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    Rene welbrink
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  • 2.  RE: FPC0 got high CPU Utilization over 90%
    Best Answer

     
    Posted 12-16-2020 03:12
    Hi,
    - a "good" explanation would be route churn, so please check if these CPU events correlates with other events in your network (esp. in the part that connects to the FPC in question)
    - this KB Syslog message: RMON_EVENT_fpc_high_cpu_utilization - Juniper Networks gives some guidance on which further evidence to gather
    Regards
    Ulf

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    Ulf Bremer
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  • 3.  RE: FPC0 got high CPU Utilization over 90%

    Posted 12-16-2020 04:45
    Hello,

    how are you monitoring the device ?
    we experienced similar issues on several devices under junos and it was caused by the polling of monitoring system itself