I have been
experiencing very high CPU uesage on a Cisco 2911. It is currently our edge
device for a 50Mbps data center WAN link. This connection is connecting in to
our DMVPN. Here is the first page of output for the sh proc cpu s 5s:
CPU utilization
for five seconds: 83%/83%; one minute: 86%; five minutes: 86%
PID
Runtime(ms) Invoked uSecs
5Sec 1Min 5Min TTY Process
96
1440856 154699951 9
0.16% 0.21% 0.21%
0 Ethernet Msec Ti
2
887752 260607 3406
0.08% 0.06% 0.06%
0 Load Meter
67
537724 1298481 414
0.08% 0.03% 0.02%
0 Per-Second Jobs
119
444236 38568359 11
0.08% 0.04% 0.05%
0 IPAM Manager
192
1796 83981 21
0.08% 0.00% 0.00%
0 FW DP Inspect pr
3
0 1 0
0.00% 0.00% 0.00%
0 LICENSE AGENT
4
0 1 0
0.00% 0.00% 0.00%
0 EDDRI_MAIN
7
756 471 1605
0.00% 0.00% 0.00%
0 Pool Manager
5
0 1 0
0.00% 0.00% 0.00%
0 RO Notify Timers
6
4118308 293279 14042
0.00% 0.04% 0.05%
0 Check heaps
11
0 1 0
0.00% 0.00% 0.00%
0 License Client N
8
0 1 0
0.00% 0.00% 0.00%
0 DiscardQ Backgro
13
13264548 21497 617070
0.00% 0.17% 0.18%
0 Licensing Auto U
14
4343012 1289560 3367
0.00% 0.05% 0.05%
0 Environmental mo
9
0 2 0
0.00% 0.00% 0.00%
0 Timers
16
924 21497 42
0.00% 0.00% 0.00%
0 IPC Dynamic Cach
10
28 1332 21
0.00% 0.00% 0.00%
0 WATCH_AFS
18
0 1 0
0.00% 0.00% 0.00%
0 IPC Zone Manager
19
16240 1265108 12
0.00% 0.00% 0.00%
0 IPC Periodic Tim
12
0 1 0
0.00% 0.00% 0.00%
0 Image License br
21
0 1 0
0.00% 0.00% 0.00%
0 IPC Process leve
22
0 1 0
0.00% 0.00% 0.00%
0 IPC Seat Manager
23
0 1 0
0.00% 0.00% 0.00%
0 IPC Seat RX Cont
15
3292 257950 12
0.00% 0.00% 0.00%
0 IPC Event Notifi
25
1564 130306 12
0.00% 0.00% 0.00%
0 IPC Keep Alive M
26
10204 258446 39
0.00% 0.00% 0.00%
0 IPC Loadometer
27
0 1 0
0.00% 0.00% 0.00%
0 Crash writer
28
0 1 0
0.00% 0.00% 0.00%
0 Exception contro
29
19032 1265100 15
0.00% 0.00% 0.00%
0 BGP Scheduler
17
0 1 0
0.00% 0.00% 0.00%
0 IPC Session Serv
31
26916 1340717 20
0.00% 0.00% 0.00%
0 ARP Background
32
0 2 0
0.00% 0.00% 0.00%
0 ATM Idle Timer
33
0 1 0
0.00% 0.00% 0.00%
0 ATM ASYNC PROC
20
14780 1265108 11
0.00% 0.00% 0.00%
0 IPC Deferred Por
35
0 45 0
0.00% 0.00% 0.00%
0 AAA_SERVER_DEADT
36
0 1 0
0.00% 0.00% 0.00%
0 Policy Manager
37
0 2 0
0.00% 0.00% 0.00%
0 DDR Timers
38
0 3 0
0.00% 0.00% 0.00%
0 Entity MIB API
24
0 1
0 0.00% 0.00%
0.00% 0 IPC Seat TX Cont
40
2192 33 66424
0.00% 0.00% 0.00%
0 PrstVbl
41
0 2 0
0.00% 0.00% 0.00%
0 Serial Backgroun
42
0 1 0
0.00% 0.00% 0.00%
0 RMI RM Notify Wa
43
4 2 2000
0.00% 0.00% 0.00%
0 SMART
44
22804 1297957 17
0.00% 0.00% 0.00%
0 GraphIt
45
0 2 0
0.00% 0.00% 0.00%
0 Dialer event
46
0 1 0
0.00% 0.00% 0.00%
0 SERIAL A'detect
47
0 2 0
0.00% 0.00% 0.00%
0 XML Proxy Client
30
269096 1078488 249
0.00% 0.00% 0.00%
0 ARP Input
49
33436 135132 247
0.00% 0.00% 0.00%
0 Net Background
The sh proc cpu h
command shows the router at or above 90% for the last 72 hours with spikes up
to 100%.
The device on the
other end of this conenction is a Cisco 2821 with a VPN module WS-X4548-RJ45V+. This device is
running at 30-34% useage.
Is anyone aware
of any problems with the 2911?
The answer:
2911 throughput
is 35 Mb. 2821 throuput is 86 Mb. VPN accelerator card can just help for
encryption of IPSEC. all IP flow conttrols by CPU. Because of it you depend on
throuput of your router model.
Regarding the
2911 you can read in this one: http://www.3anetwork.com/blog/
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