C3650 CPU Core High phenomena question

[chaejungho]

the cpu health check results, 

specific processors occupy the cpu.

and I want to know the role of the following processes

(fed,fed-ots-main,cli_agent,iosd,iosd.fastpath)

●CPU State

C3650#sh processes cpu sorted detailed Core 0: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 96% Core 1: CPU utilization for five seconds: 46%; one minute: 21%; five minutes: 20% Core 2: CPU utilization for five seconds: 30%; one minute: 5%; five minutes: 3% Core 3: CPU utilization for five seconds: 29%; one minute: 7%; five minutes: 5%
PID	T	C	TID	Runtime(ms)	Invoked	uSecs	5Sec	1Min	5Min	TTY	Process
							(%)	(%)	(%)
6025	L			195589	1271094	458	26.88	26.67	26.67	1088	fed
6025	L	0	6472	3309521	1772354	0	24.94	24.81	24.83	1088	fed-ots-main
6658	L			537780	2034538	26	4.53	4.53	4.53	0	cli_agent
8889	L			886159	2038884	115	2.44	3.21	2.95	0	iosd
8889	L	1	8889	2340644	1591182	0	2.19	2.76	2.55	0	iosd
8889	L	2	9949	3038784	3416960	0	0.25	0.41	0.37	0	iosd.fastpath

and whatever it is related to bug "CSCutx 27292" ?

URL: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCut27292

Thank you.

[David Nolasco]

I think your issue is related to the following bug:

CSCux39490 - c3650/c3850 core 0 high /fed and fed-ots-main abnormal

Plan for a software upgrade to 03.07.04.

[chaejungho]

thank you for answer.

add to questions.

The forus queue traffic to your detailed bug 'is mentioned.

forus Is exactly what packets?

more than 100 pps? cpu high phenomenon?

100 If the high cpu occur when entering or higher pps,

Is not this the same phenomenon repeated supposed to be presented to reload workround?

[Furose M]

FED OTS (One Thread Server) is responsible for all programming to the forwarding engine. It handles pretty much any update (Configuration, NW events etc) to the forwarding tables.

CSCutx27292 is not related.

[Furose M]

it looks like its more related to CSCuz57493.

the procedure to validate CSCuz57493 is little complex (if you want, we can email me separately and i can work with u on that).

the current workaround for CSCuz57493 is to reload the device. the fix is available only in the next release 3.6.6 or 3.7.5.

[chaejungho]

thank you for answer.
forus Is exactly what packets?

[Furose M]

forus means, packets destined to switch.

[chaejungho]

Is any packets with specific detail?

for example arp, bpdu, control-packet, etc.

the switch destination packet are all the 'forus'?

meaning forus?