ExtremeSwitching (EXOS)

 View Only
  • 1.  cpu utilization for new switch

    Posted 07-08-2016 07:54
    Hi

    We have a new switch and it shows as follows :

    sh cpu-monitoring

    CPU Utilization Statistics - Monitored every 5 seconds
    -----------------------------------------------------------------------

    Process 5 10 30 1 5 30 1 Max Total
    secs secs secs min mins mins hour User/System
    util util util util util util util util CPU Usage
    (%) (%) (%) (%) (%) (%) (%) (%) (secs)
    -----------------------------------------------------------------------

    System 5.5 5.3 5.1 5.1 5.0 5.1 5.1 99.9 1492.62 62333.95
    aaa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 11.35 14.54
    acl 0.1 0.0 0.1 0.1 0.1 0.1 0.1 3.3 576.56 1129.24
    bfd 0.0 0.0 0.0 0.1 0.1 0.0 0.0 2.6 154.27 224.24
    bgp 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00
    brm 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00 0.00
    ces 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3 0.16 0.06
    cfgmgr 0.0 0.0 0.0 0.0 0.0 0.1 0.1 5.9 91.84 41.25
    cli 0.1 0.0 0.0 0.5 0.1 0.3 0.2 46.3 38.72 18.30
    devmgr 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.9 25.00 9.01
    dirser 0.0 0.0 0.0 0.1 0.0 0.0 0.0 50.0 0.37 0.66
    dosprotect 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 0.17 0.05
    dot1ag 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 5.79 7.25
    eaps 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.3 0.60 0.39

    Any idea why 99.9% cpu util was caused here ?

    version running :ExtremeXOS version 15.6.4.2

    It has 4 links up with very less traffic .

    Thanks
    Gaurav Madan



  • 2.  RE: cpu utilization for new switch

    Posted 07-08-2016 08:49
    The 99.9% in the max column means that there was a moment in the history that the CPU spiked to 99.9%
    The current reading does not show any high CPU usage.

    https://gtacknowledge.extremenetworks.com/articles/Q_A/Difference-between-Top-and-show-cpu-monitorin...



  • 3.  RE: cpu utilization for new switch

    Posted 07-08-2016 14:43
    Hello Ron ,
    I do understand that .. What I am wondering is that what could have caused cpu spike at 99.9 % when there is very minimum config and data traffic passing through switch


  • 4.  RE: cpu utilization for new switch

    Posted 07-08-2016 14:43
    It's possible that information still exists in the log (show log) that can show which process spiked the CPU. It depends on the amount of log messages you receive and how long ago this happened.
    You can use the clear cpu-monitoring command to reset these values.