05-08-2003 02:15 AM - edited 03-02-2019 07:11 AM
We have a high cpu utilization problem on our Internet 7206 router. Here is the output of sh proc cpu:
CPU utilization for five seconds: 93%/92%; one minute: 93%; five minutes: 92%
As you can see, the high CPU utilization is caused by interrupts (92%).
We don't have any atm or voice ports on the router.
Anyone can help in troubleshooting this problem?
05-08-2003 04:26 AM
05-08-2003 10:27 PM
Thank you, but this doc didn't help me.
Does anyone have any specific suggestion?
Thanks,
05-08-2003 10:36 PM
Give us `sh processes cpu` output.
05-09-2003 09:56 AM
Here it is:
ROUTER#sh proc cpu
CPU utilization for five seconds: 92%/91%; one minute: 89%; five minutes: 88%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 138848 259462 535 0.00% 0.00% 0.00% 0 Load Meter
2 1540 397 3879 0.08% 0.12% 0.04% 2 Virtual Exec
3 3625100 222318 16305 0.00% 0.06% 0.05% 0 Check heaps
4 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager
5 419640 243656 1722 0.00% 0.00% 0.00% 0 Pool Manager
6 0 2 0 0.00% 0.00% 0.00% 0 Timers
7 22992 43953 523 0.00% 0.00% 0.00% 0 Serial Backgroun
8 37392 258015 144 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC
9 134308 1287224 104 0.00% 0.00% 0.00% 0 EnvMon
10 0 1 0 0.00% 0.00% 0.00% 0 OIR Handler
11 0 1 0 0.00% 0.00% 0.00% 0 IPC Zone Manager
12 160256 1287224 124 0.00% 0.00% 0.00% 0 IPC Periodic Tim
13 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat Manager
14 1928028 1559534 1236 0.00% 0.03% 0.02% 0 ARP Input
15 103564 299561 345 0.00% 0.00% 0.00% 0 HC Counter Timer
16 76 981 77 0.00% 0.00% 0.00% 0 DDR Timers
17 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
18 12 2 6000 0.00% 0.00% 0.00% 0 Entity MIB API
19 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect
20 4 5 800 0.00% 0.00% 0.00% 0 Critical Bkgnd
21 2258744 1091852 2068 0.16% 0.03% 0.01% 0 Net Background
22 11212 13647 821 0.00% 0.00% 0.00% 0 Logger
23 2203948 1287215 1712 0.16% 0.12% 0.12% 0 TTY Background
24 8701552 1301113 6687 0.00% 0.01% 0.00% 0 Per-Second Jobs
25 0 1 0 0.00% 0.00% 0.00% 0 Inode Table Dest
26 0 1 0 0.00% 0.00% 0.00% 0 Inode Table Refr
27 0 1 0 0.00% 0.00% 0.00% 0 CSP Timer
28 0 2 0 0.00% 0.00% 0.00% 0 Hawkeye Backgrou
29 0 1 0 0.00% 0.00% 0.00% 0 SONET alarm time
30 0 2 0 0.00% 0.00% 0.00% 0 VNM DSPRM MAIN
31 0 1 0 0.00% 0.00% 0.00% 0 CES Line Conditi
32 0 2 0 0.00% 0.00% 0.00% 0 Flash MIB Update
33 4 2 2000 0.00% 0.00% 0.00% 0 ATM OAM Input
34 0 2 0 0.00% 0.00% 0.00% 0 ATM OAM TIMER
35 96 64 1500 0.00% 0.00% 0.00% 0 TurboACL
36 0 2 0 0.00% 0.00% 0.00% 0 AAA Dictionary R
37 72863832 25471680 2860 0.24% 0.20% 0.17% 0 IP Input
38 2180512 806592 2703 0.00% 0.03% 0.04% 0 CDP Protocol
39 0 2 0 0.00% 0.00% 0.00% 0 PASVC create VA
40 0 1 0 0.00% 0.00% 0.00% 0 X.25 Encaps Mana
41 0 1 0 0.00% 0.00% 0.00% 0 PPP IP Add Route
42 1635844 39356 41565 0.00% 0.01% 0.00% 0 IP Background
43 0 1 0 0.00% 0.00% 0.00% 0 SNMP Timers
44 54068 21832 2476 0.00% 0.00% 0.00% 0 Adj Manager
45 293388 174530 1681 0.00% 0.04% 0.02% 0 CEF process
46 0 1 0 0.00% 0.00% 0.00% 0 HTTP Timer
47 134196 166308 806 0.00% 0.00% 0.00% 0 TCP Timer
48 620 137 4525 0.00% 0.00% 0.00% 0 TCP Protocols
49 0 1 0 0.00% 0.00% 0.00% 0 Probe Input
50 0 1 0 0.00% 0.00% 0.00% 0 RARP Input
51 0 1 0 0.00% 0.00% 0.00% 0 Socket Timers
52 24 31 774 0.00% 0.00% 0.00% 0 DHCPD Receive
53 4372944 21694 201573 0.00% 0.00% 0.00% 0 IP Cache Ager
54 0 1 0 0.00% 0.00% 0.00% 0 COPS
55 0 1 0 0.00% 0.00% 0.00% 0 PAD InCall
56 0 2 0 0.00% 0.00% 0.00% 0 X.25 Background
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
57 0 2 0 0.00% 0.00% 0.00% 0 gk process
59 172600 1287234 134 0.00% 0.00% 0.00% 0 Net Serv Timer
60 4 1 4000 0.00% 0.00% 0.00% 0 Router Autoconf
61 0 1 0 0.00% 0.00% 0.00% 0 TSP
62 4 1 4000 0.00% 0.00% 0.00% 0 QOS_MODULE_MAIN
63 0 1 0 0.00% 0.00% 0.00% 0 CCVPM_HTSP
64 0 1 0 0.00% 0.00% 0.00% 0 CCVPM_R2
65 0 1 0 0.00% 0.00% 0.00% 0 CCSWVOICE
66 0 2 0 0.00% 0.00% 0.00% 0 Background Loade
67 0 1 0 0.00% 0.00% 0.00% 0 sssapp
68 4 2 2000 0.00% 0.00% 0.00% 0 Proxy Session Ap
69 9340 129738 71 0.00% 0.00% 0.00% 0 RMON Recycle Pro
70 0 2 0 0.00% 0.00% 0.00% 0 RMON Deferred Se
71 0 1 0 0.00% 0.00% 0.00% 0 SYSMGT Events
72 0 1 0 0.00% 0.00% 0.00% 0 RMON Packets
73 37320 129318 288 0.00% 0.00% 0.00% 0 BUSYOUT SCAN
74 186520 1271719 146 0.00% 0.00% 0.00% 0 trunk conditioni
75 0 1 0 0.00% 0.00% 0.00% 0 trunk conditioni
76 561316 1771880 316 0.00% 0.00% 0.00% 0 Net Input
77 665884 259465 2566 0.00% 0.00% 0.00% 0 Compute load avg
78 1332332 30406 43818 0.00% 0.01% 0.00% 0 Per-minute Jobs
79 0 2 0 0.00% 0.00% 0.00% 0 CC-API_VCM
80 2207176 12568446 175 0.16% 0.04% 0.01% 0 CCPROXY_CT
81 1708 4010 425 0.00% 0.00% 0.00% 0 CEF Scanner
82 1174868 1805316 650 0.00% 0.01% 0.00% 0 Standby (HSRP)
83 0 2 0 0.00% 0.00% 0.00% 0 IP Flow Backgrou
84 770216 1261027 610 0.00% 0.00% 0.00% 0 FR LMI
85 1385620 12712239 108 0.00% 0.00% 0.00% 0 FR Broadcast Out
86 33540 40970 818 0.00% 0.00% 0.00% 0 FR ARP
87 8448 65067 129 0.00% 0.00% 0.00% 0 FR TUNNEL
88 2152 21686 99 0.00% 0.00% 0.00% 0 FR FRAGMENTATION
89 0 1 0 0.00% 0.00% 0.00% 0 FRF9 manager
90 0 1 0 0.00% 0.00% 0.00% 0 FRF9 timed event
91 11968068 42056536 284 0.08% 0.05% 0.06% 0 traffic_shape
93 8 31 258 0.00% 0.00% 0.00% 0 TCP Listener
94 845772 445859 1896 0.00% 0.00% 0.00% 0 IP SNMP
95 242736 223277 1087 0.00% 0.00% 0.00% 0 PDU DISPATCHER
96 1241048 224676 5523 0.00% 0.00% 0.00% 0 SNMP ENGINE
97 0 1 0 0.00% 0.00% 0.00% 0 SNMP ConfCopyPro
98 0 1 0 0.00% 0.00% 0.00% 0 SNMP Traps
99 221640 1304805 169 0.00% 0.00% 0.00% 0 NTP
100 0 1 0 0.00% 0.00% 0.00% 0 xcpa-driver
101 2000 10844 184 0.00% 0.00% 0.00% 0 DHCPD Timer
102 24576 367134 66 0.00% 0.00% 0.00% 0 DHCPD Database
103 3208848 6182466 519 0.00% 0.02% 0.01% 0 BGP Router
104 864000 642904 1343 0.00% 0.00% 0.00% 0 BGP I/O
105 5590156 94657 59057 0.00% 0.11% 0.10% 0 BGP Scanner
107 8088 59279 136 0.00% 0.00% 0.00% 0 BGP Open
05-09-2003 10:29 AM
Hello,
here are the suggestions from the output interpreter:
An inappropriate switching path is configured on the router. If you have a
Cisco 7000 or Cisco 7500 series router, try improving its performance by
using the 'ip route-cache {path}' command (path can be cef, distributed, or
cbus, depending on the platform). If there are access lists linked to
interfaces or if ip accounting is turned on, configure NetFlow switching
using the 'ip route-cache flow' command.
- The CPU is performing memory alignment corrections. If there are
%ALIGN-3-CORRECT messages logged, then the high CPU utilization is caused by
memory alignment corrections. Capture the output of the 'show align' command,
decode the tracebacks and search for a bug in your version of IOS.
- The router is overloaded with traffic. Use the 'show interfaces' command and
paste into Output Interpreter to determine which interface is overloaded
- There maybe a bug in the version of IOS running on the router. Check the Bug Navigator
for a bug that reports similar symptoms in a similar environment.
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