6500 SUP2 MSFC2 High CPU Level

[gregokada]

I have two 6509's at the core of our network.  They are both running at about 30% constantly when displaying a sho proc cpu i get this

sho proc cpu | ex 0.00
CPU utilization for five seconds: 30%/20%; one minute: 29%; five minutes: 30%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
  14   290029984 872561070        332  0.40%  0.36%  0.34%   0 ARP Input

  17    60043212  25569720       2348  0.08%  0.06%  0.08%   0 HC Counter Timer

  69   8595920923130459271        274  6.55%  6.23%  6.25%   0 IP Input

102    61573488 153483106        401  0.24%  0.26%  0.26%   0 CEF process

135  12933500281371750271        942  2.21%  1.09%  1.04%   0 Port manager per

154   188433344 538222206        350  0.08%  0.16%  0.17%   0 IGMP Input

158    46399264 414826786        111  0.08%  0.02%  0.04%   0 PDU DISPATCHER

Is this normal?  These switches aren't even running a routing protocol, as routes are all statically defined.    Any help would be appreciated.

[Giuseppe Larosa]

Hello Greg,

I would say there is a consistent part of packets that is sent to cpu

69    8595920923130459271        274  6.55%  6.23%  6.25%   0 IP Input

all the other cpu usage is caused by SW interrupts

What IOS image is running?

is the chassis in native ios or hybrid mode?

Hope to help

Giuseppe

[gregokada]

HI,

Thanks for  your response.  The switches are running native IOS here is the output of the sho ver:

xxxxxxx-6500a>sho ver
Cisco Internetwork Operating System Software
IOS (tm) c6sup2_rp Software (c6sup2_rp-JSV-M), Version 12.1(19)E1a, EARLY DEPLOY
MENT RELEASE SOFTWARE (fc2)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 05-Aug-03 23:30 by hqluong
Image text-base: 0x40008C00, data-base: 0x41B0C000

ROM: System Bootstrap, Version 12.1(11r)E1, RELEASE SOFTWARE (fc1)
BOOTLDR: c6sup2_rp Software (c6sup2_rp-JSV-M), Version 12.1(19)E1a, EARLY DEPLOY
MENT RELEASE SOFTWARE (fc2)

xxxxxxxx-6500a uptime is 3 years, 13 weeks, 1 hour, 4 minutes
Time since xxxxxxxx-6500a switched to active is 3 years, 13 weeks, 1 hour, 23
minutes
System returned to ROM by power-on (SP by power-on)
System restarted at 09:47:35 PST Sat Nov 25 2006
System image file is "sup-bootflash:c6sup22-jsv-mz.121-19.E1a"

cisco WS-C6509 (R7000) processor (revision 3.0) with 227328K/34816K bytes of mem
ory.
Processor board ID TSC0723007V
R7000 CPU at 300Mhz, Implementation 39, Rev 3.3, 256KB L2, 1024KB L3 Cache
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
27 Virtual Ethernet/IEEE 802.3  interface(s)
226 Gigabit Ethernet/IEEE 802.3 interface(s)
381K bytes of non-volatile configuration memory.

32768K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102

[Giuseppe Larosa]

Hello Greg,

release notes mention the following:

You might see high CPU utilization if you enter the logging synchronous command. This problem is resolved in Release 12.1(23)E. (CSCed16920)

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.1E/native/release/notes/OL_2310.html#wp1475903

my comment:

the command is given under line con 0

Hope to help

Giuseppe

[gregokada]

Thank you.  I will look into that.