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High CPU utilization reported on Brocade switch

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Category:
fabric-interconnect-and-management-switches
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SAN
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Applies to

  • Brocade Fiber Channel Switch
  • Fabric OS (FOS) version v9.1.1a, 9.1.1b, and v9.1.1c

Issue

  • Errdump alert of CPU utilization exceeding 80% received on Brocade switch:

2021/12/15-04:18:11, [MAPS-1002], 5818, FID 128, ERROR, SW02, Chassis, Condition=CHASSIS(CPU>80.00), Current Value:[CPU, 100.00 %], RuleName=CHASSIS_CPU_UTILIZATION, Dashboard Category=Switch Resource.

  • Top reports long running RPM process 

top 
Tasks: 166 total,   2 running, 164 sleeping,   0 stopped,   0 zombie
Cpu(s): 50.0%us,  7.5%sy,  0.1%ni, 41.4%id,  0.3%wa,  0.0%hi,  0.7%si,  0.0%st
Mem:   1866036k total,   817668k used,  1048368k free,    32848k buffers
Swap:        0k total,        0k used,        0k free,   366524k cached
 
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
4732 0         20   0  5144 3296 2992 R   98  0.2 241397:22 rpm

 

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