x460-G2 vlan high cpu load

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  • Updated 10 months ago
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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 ??
Photo of Антон Аниховский

Posted 10 months ago

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Photo of Karthik Mohandoss

Karthik Mohandoss, Employee

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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?  
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Bin, Employee

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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,