08-02-2013 02:29 AM - edited 03-07-2019 02:43 PM
Hi,
The CPU utilization of my Catalyst 6509 VSS switch ( up to 20% or higher ) was always higher than other Catalyst 6509 non VSS switch. The show proc cpu sort are A/F. The IOS version is 12.2(33)SXI4a. Is there any suggestion for the VSS high CPU utilization?
Best Regards,
6509-VSS#sh proc cpu sort
CPU utilization for five seconds: 20%/10%; one minute: 17%; five minutes: 18%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
293 180677272 576311141 313 2.79% 2.58% 2.63% 0 Earl NDE Task
23 1238395721092969687 113 2.55% 1.22% 1.20% 0 IPC Seat Manager
537 137203248 710311815 193 0.95% 1.44% 1.46% 0 Port manager per
308 8875732 38978030 227 0.55% 0.48% 0.47% 0 CDP Protocol
11 22352240 40970620 545 0.47% 0.20% 0.20% 0 ARP Input
314 38472656 287310225 133 0.39% 0.43% 0.40% 0 IP Input
504 4765340 73348487 64 0.15% 0.10% 0.10% 0 RPC online_diag_
133 36 207 173 0.15% 0.03% 0.00% 1 Virtual Exec
403 4744372 13696576 346 0.15% 0.16% 0.15% 0 CEF: IPv4 proces
604 621880 551345900 1 0.15% 0.08% 0.08% 0 HSRP Common
341 5993161121847645 0 0.15% 0.13% 0.15% 0 Ethernet Msec Ti
316 11340988 98860214 114 0.15% 0.07% 0.08% 0 ADJ resolve proc
50 1338496 9198605 145 0.15% 0.11% 0.13% 0 Per-Second Jobs
383 432600 228133 1896 0.07% 0.00% 0.00% 0 XDR mcast
59 10383804 361448183 28 0.07% 0.10% 0.10% 0 VSIBC process
120 3982420 4153256 958 0.07% 0.06% 0.07% 0 IPC LC Message H
536 151488 124223423 1 0.07% 0.02% 0.02% 0 PM Callback
424 1738732 4471794 388 0.07% 0.03% 0.04% 0 HIDDEN VLAN Proc
416 84492 10509171 8 0.07% 0.00% 0.00% 0 FM core
606 1899852 37997617 49 0.07% 0.05% 0.05% 0 OSPF-1 Hello
135 85228 89567322 0 0.07% 0.01% 0.00% 0 Mwheel Process
322 416756 9138950 45 0.07% 0.00% 0.00% 0 Spanning Tree
445 193604 277199712 0 0.07% 0.03% 0.02% 0 RADIUS
282 199000 277469935 0 0.07% 0.03% 0.02% 0 ACE Tunnel Task
24 0 1 0 0.00% 0.00% 0.00% 0 IPC Session Serv
6 0 1 0 0.00% 0.00% 0.00% 0 PF Redun ICC Req
22 0 1 0 0.00% 0.00% 0.00% 0 IPC Process leve
21 12848 8937247 1 0.00% 0.00% 0.00% 0 IPC Deferred Por
25 0 1 0 0.00% 0.00% 0.00% 0 IPC Stdby Update
26 756 894349 0 0.00% 0.00% 0.00% 0 Compute SRP rate
31 0 1 0 0.00% 0.00% 0.00% 0 Crash writer
27 0 2 0 0.00% 0.00% 0.00% 0 DDR Timers
33 20 60 333 0.00% 0.00% 0.00% 0 OBFL Cfg Dispatc
28 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
20 552748 8938985 61 0.00% 0.06% 0.07% 0 IPC Periodic Tim
36 12 41 292 0.00% 0.00% 0.00% 0 rf proxy message
37 12 6 2000 0.00% 0.00% 0.00% 0 client_entity_se
19 0 166 0 0.00% 0.00% 0.00% 0 PF_Split Sync Pr
29 140 37 3783 0.00% 0.00% 0.00% 0 ifIndex Receive
30 0 2 0 0.00% 0.00% 0.00% 0 Serial Backgroun
32 2330020 11145258 209 0.00% 0.03% 0.00% 0 EnvMon
42 0 64 0 0.00% 0.00% 0.00% 0 Cat6k SNMP Trap
43 0 1 0 0.00% 0.00% 0.00% 0 ARP Snoop
44 18108 8937239 2 0.00% 0.00% 0.00% 0 Dynamic ARP Ins
Solved! Go to Solution.
08-02-2013 02:46 AM
yes,I have meet this case in my network...
So,see your output,the first process is "NDE",I think it will be:
1.Do you enable the NETFLOW?
2.Do you enable the Netflow export,the Netflow Export just is NDE
The Netflow will collect the traffic info,like source-ip destination-ip ports and bytes by each flow.
And the Netflow Export will put these traffic info to a server, the server will log these info and analysis them.
Each Netflow Export packet encapsulated by CPU,so if you enable Netflow and enable NF-Export,your CPU will more higher.
08-02-2013 02:46 AM
yes,I have meet this case in my network...
So,see your output,the first process is "NDE",I think it will be:
1.Do you enable the NETFLOW?
2.Do you enable the Netflow export,the Netflow Export just is NDE
The Netflow will collect the traffic info,like source-ip destination-ip ports and bytes by each flow.
And the Netflow Export will put these traffic info to a server, the server will log these info and analysis them.
Each Netflow Export packet encapsulated by CPU,so if you enable Netflow and enable NF-Export,your CPU will more higher.
08-02-2013 03:48 AM
Hi,
Yes, I have enable netflow & NDE export. Is it possible to modify netflow & NDE export configuration ( but still enable it ) to decrease the CPU utilization?
Best Regards,
08-04-2013 05:29 PM
Maybe like:
1.decrease the interface enabled netflow
2.I don't care the source/destination port,only lookup the IP
http://www.cisco.com/en/US/docs/ios/netflow/configuration/guide/12_2sr/nf_12_2sr_book.html
08-04-2013 08:07 PM
Just curious, are you considering 20% high cpu? This would be pretty expected, and actually quite low vs some production networks I've seen.
6509-VSS#sh proc cpu sort
CPU utilization for five seconds: 20%/10%; one minute: 17%; five minutes: 18% <<<<
08-04-2013 09:26 PM
Hi,
The cpu utilization for other non VSS Catalyst 6509 switch ( also enable netflow & NDE export ) is below 10%, but this VSS switch is 20% and higher, and we will install more distirbute and access switch under the VSS core switch, so we are worry the CPU utillization and switch performance...
Best Regards,
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