From: Tony Huang (tonyh5@hotmail.com)
Date: Sun Feb 23 2003 - 23:00:20 GMT-3
Hi,
I think the frequent change of networkk status could cause the high cup
usage because the switch needs to run spantree times. By issuing sh spantree
statistics, you should be able to see which port has incured the change. You
can find this by looking at the column: topology change last recvd. from.
From there, you can keep tracing the source of problems.
Hope it helps,
Cheers,
Tony
----- Original Message -----
From: "Weidong Xiao" <Weidong.Xiao@vi.net>
To: <ccielab@groupstudy.com>
Sent: Monday, February 24, 2003 9:34 AM
Subject: cpu usuage high
> Hi Group,
>
> A cat6509 is receiving about 30Mb/s traffic from the Internet. Normally
the cpu usuage is under 10%. But for the last couple of hours it's like
below. I am wondering what kind of traffic can be so 'powerful', and what
does pid 19 (see below) mean. Can anyone shed some light?
>
> Thanks very much,
> Weidong
>
>
> br1.rtr#sh proc cpu
> CPU utilization for five seconds: 48%/32%; one minute: 64%; five minutes:
65%
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> ....
> 19 42728104 184864569 231 16.54% 19.07% 19.36% 0 IP Input
> ....
> 66 175270476 1282394 136677 0.00% 1.39% 1.94% 0 BGP Scanner
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