RE: [nsp] MSFC CPU Utilization Pegged at 99%....but a sh proc cpu does not reveal anything past 1%

From: Greene, Patrick (PJGreene@infotechent.net)
Date: Fri Feb 02 2001 - 15:33:43 EST


CPU utilization for five seconds: 99%/82%; one minute: 99%; five minutes:
99%
 PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
   1 176 3721 47 0.00% 0.00% 0.00% 0 Load Meter
   2 1436 8675 165 0.00% 0.00% 0.00% 0 OSPF Hello
   3 147912 7464 19816 4.54% 0.97% 0.88% 0 Check heaps
   4 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager
   5 3416 41959 81 0.00% 0.00% 0.00% 0 Pool Manager
   6 0 2 0 0.00% 0.00% 0.00% 0 Timers
   7 0 2 0 0.00% 0.00% 0.00% 0 Serial Backgroun
   8 1372 14030 97 0.00% 0.00% 0.00% 0 EnvMon
   9 1276 11934 106 0.00% 0.00% 0.00% 0 ARP Input
  10 0 2 0 0.00% 0.00% 0.00% 0 DDR Timers
  11 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
  12 0 1 0 0.00% 0.00% 0.00% 0 Entity MIB API
  13 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect
  14 0 1 0 0.00% 0.00% 0.00% 0 Critical Bkgnd
  15 96 2500 38 0.00% 0.00% 0.00% 0 Net Background
  16 4372 29869 146 0.00% 0.00% 0.00% 0 Logger
  17 2144 14026 152 0.08% 0.01% 0.00% 0 TTY Background
  18 312 14030 22 0.00% 0.00% 0.00% 0 Per-Second Jobs
  19 22512 84985 264 0.08% 0.06% 0.06% 0 IP Input
  20 216 2301 93 0.00% 0.00% 0.00% 0 CDP Protocol
  21 0 5 0 0.00% 0.00% 0.00% 0 SCP async: TCAM

-----Original Message-----
From: Martin, Christian [mailto:cmartin@gnilink.net]
Sent: Friday, February 02, 2001 3:08 PM
To: 'Greene, Patrick'; cisco-nsp@puck.nether.net
Subject: RE: [nsp] MSFC CPU Utilization Pegged at 99%....but a sh proc cpu
does not reveal anything past 1%

Is this spent at the Interrupt level? Recall that the process utilization
adds up to the difference between total 5 second CPU utilization, and time
spent at the interrupt level switching packets. It is likely that MLS is
hosed, or CEF is busted/off on the MSFC2, and the CPU is switching all the
packets in the fast or process path. Since IP_Input appears idle, then it
is likely fast switching. Can you snip over a show proc cpu?
 
chris

-----Original Message-----
From: Greene, Patrick [mailto:PJGreene@infotechent.net]
Sent: Friday, February 02, 2001 2:48 PM
To: cisco-nsp@puck.nether.net
Subject: [nsp] MSFC CPU Utilization Pegged at 99%....but a sh proc cpu does
not reveal anything past 1%

Have a 6509 with 2 MSFC's. The MSFC's are running 12.1(2)E. Just had one
of the MSFC's spike to 99%. A sh proc cpu reveals that total utlization
should add up to about 5%. A reload of the module causes the exact same
thing. A no changes have been made. Anybody seen this before. Also, the
other MSFC and Switch Utilization are both showing about 3-5%, which is
normal.

Thank You,
Patrick Greene



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