ExtremeSwitching (EXOS)

  • 1.  x460-G2 vlan high cpu load

    Posted 08-14-2017 11:11
    Hello all, have Extreme-x460-G2-24x and have problem

    high cpu load on process vlan

    Mem: 494772K used, 489416K free, 0K shrd, 3820K buff, 164988K cached CPU: 50.1% usr 12.7% sys 0.0% nic 32.9% idle 0.0% io 2.1% irq 1.9% sirq Load average: 8.56 8.61 8.74 9/227 2652 PID PPID USER STAT RSS %MEM CPU %CPU COMMAND
    1522 1 root S 4052 0.4 1 36.3 ./vlan
    1510 1 root S 31204 3.1 0 15.7 ./cliMaster

    * Extreme-x460-G2-24.9 # show cpu-monitoring process vlan

    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 6.1 5.9 5.9 5.7 5.6 6.4 6.2 56.8 48.68 37323.22
    vlan 38.1 37.8 38.2 37.4 38.2 38.6 38.7 44.7 320065.55 37710.60

    how it diagnose ? what happend ??


  • 2.  RE: x460-G2 vlan high cpu load

    Posted 08-15-2017 04:15
    Антон,

    Please run the "top" output for some time and see if any other process is high.
    Like SNMP or the bcmrx.

    If the snmp process (snmpmaster and subagent) process is high then it indicates a continuous polling is happening and that indirectly affects the process VLAN .

    In case if bcmrx is high that indicates high number of packets are carried to the CPU which needs further investigation.

    If none of the other process is high do you remember doing any configuration changes or executed any commands which results in the VLAN process spike?



  • 3.  RE: x460-G2 vlan high cpu load

    Posted 08-15-2017 21:45
    Hi, AHTOH,

    Suggest you to run "top" output more than 40 seconds and then collect "show cpu-monitoring", also see "show log" from switch.

    Best regards,