High CPU observed on Brocade switch (FabOS 8.2.3)
Applies to
- MetroCluster FC
- Brocade FC Switches
- Brocade Fabric OS (FOS)
- ONTAP 9
Issue
- Log in to the switch takes quite a long time
- Command outputs take a very long time
- FabOS firmware update times out
- Observed high CPU usage on all 4 Brocade FC Switches when running the command
top
Cpu(s): 83.9%us, 15.1%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.0%hi, 0.0%si, 0.0%st
Mem: 1024012k total, 800440k used, 223572k free, 42140k buffers
Swap: 0k total, 0k used, 0k free, 489864k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1658 0 16 0 103m 18m 13m S 96.1 1.9 32709:36 snmpd
1578 0 16 0 126m 26m 14m S 1.0 2.6 688:42.94 mdd0
1633 0 15 0 122m 16m 11m S 1.0 1.6 659:22.04 nsd0
6245 7003 16 0 2816 1304 1036 R 1.0 0.1 0:00.24 top
2021/12/01-07:34:12:275938, [MAPS-1002], 14131470/4797, FID 128, ERROR, SANSW02, Chassis, Condition=CHASSIS(CPU>80.00), Current Value:[CPU, 99.00 %], RuleName=CHASSIS_CPU_UTILIZATION, Dashboard Category=Switch Resource., raslogAction.c, line: 170, comp:md, ltime:2021/12/01-07:34:12:275169 2021/12/01-07:54:12:258987, [MAPS-1002], 14131882/4798, FID 128, ERROR, SANSW02, Chassis, Condition=CHASSIS(CPU>80.00), Current Value:[CPU, 100.00 %], RuleName=CHASSIS_CPU_UTILIZATION, Dashboard Category=Switch Resource., raslogAction.c, line: 170, comp:md, ltime:2021/12/01-07:54:12:257628