[c-nsp] Strange High CPU

[Church, Charles]

Don't do that then!   :)

Show run is pretty processor-intensive.  Show tech is also
processor-intensive, but is asking for a lot more information, so it's
going to keep the CPU high for a longer period.  Are you running these
through a vty port, or console?   Console is usually worse, since it's
use is much more work for the CPU than a vty port.  If you know your
startup config is the same as the running config, just get in the habit
of looking at that.  Viewing startup config is just parsing a file in
NVRAM, versus digging through all data structures in RAM and piecing it
back together.  I don't think you're hitting any bug, just asking a lot
of a slow CPU.

Chuck

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jorge
Evangelista
Sent: Monday, February 04, 2008 10:08 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Strange High CPU


Hi list,

I  I have some issues with a router Cisco 871, it have two VPNs with GRE
to others 871 routers, I realise me that when I execute "show run" or
"show
tech-support" (it delays) the cpu process in my router reach 99%, the
problem seems  the process Virtual Exec, I have seen that it adds 95%
load
CPU to my router Cisco 871, only for this instant.

alias exec ps sh processes cpu | ex 0.00%__0.00%__0.00%
#ps
CPU utilization for five seconds: 3%/2%; one minute: 5%; five minutes:
5%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   4     1958996    114727      17075  0.00%  0.77%  0.76%   0 Check
heaps
   8      285908   1153404        247  0.16%  0.20%  0.19%   0 ARP
Input
  41      631928   1277758        494  0.40%  0.47%  0.54%   0 COLLECT
STAT
COU
  42       66696    603553        110  0.08%  0.01%  0.01%   0 Net
Input
  44       50784      4394      11557  0.00%  0.02%  0.00%   0
Per-minute
Jobs
  58        1452      2660        545  0.08%  0.02%  0.13%   2 Virtual
Exec
  67     1304780   3132327        416  0.81%  1.10%  1.24%   0 IP
Input
  88       36492     40031        911  0.00%  0.02%  0.00%   0 IGMPSN


When I execute show tech-support

TOPYTOP#ps
CPU utilization for five seconds: 99%/3%; one minute: 23%; five minutes:
11%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   4     1968196    115267      17075  0.33%  0.57%  0.68%   0 Check
heaps
   8      289220   1165989        248  0.08%  0.24%  0.22%   0 ARP
Input
  35          60   1696274          0  0.08%  0.00%  0.00%   0 WLAN LED
Timers
  41      641396   1283773        499  0.24%  0.52%  0.75%   0 COLLECT
STAT
COU
  42       67124    608243        110  0.00%  0.02%  0.00%   0 Net
Input
  43          52     50938          1  0.08%  0.00%  0.00%   0 Compute
load
avg
  44       51028      4417      11552  0.00%  0.02%  0.00%   0
Per-minute
Jobs
  58       14236      3060       4652 92.09% 16.17%  3.78%   2 Virtual
Exec
  67     1320676   3169609        416  1.74%  1.61%  1.34%   0 IP
Input
  85         308    636106          0  0.08%  0.00%  0.00%   0 CEF
process
  88       36688     40298        910  0.00%  0.01%  0.00%   0
IGMPSN
 122         488       547        892  0.49%  0.04%  0.01%   0
TPLUS



According to cisco, the solutions for this problem is that i execute "no
logging console" or  "undebug all" , but I am not running some debug. I
am
running the same IOS in several cisco routers 871, it works fine, my IOS
is
c870-advipservicesk9-mz.124-4.T3.bin
Could it be a hardware problem or un bug in the IOS?.

If anyone can search my IOS have bugs in Bug
Toolkit<http://tools.cisco.com/Support/BugToolKit/> [image:
Please log in to access] from Cisco, I do not have a CCO account with
levels
access required. Or how can I tune my config for the Virtual Exec
process,
any help is appreciated.






-- 
"The network is the computer"
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