Symptom
seeing continuously high CPU due to SISF Main Thread process.
B1-Edge-1#show proc cpu so
CPU utilization for five seconds: 100%/5%; one minute: 99%; five minutes: 100%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
595 23441309 4443227 5275 85.22% 85.04% 85.12% 0 SISF Main Thread
Whilst there are few DHCP requests coming to the switch, there are many outstanding DHCP requests. From the SISF debug we can see that the event is getting dequed / enqued endlessly.
Conditions
Customer is using ACRO (wireless bridged virtual machines) on SDA Fabric Edge.
