[c-nsp] TCP Timer 70% CPU

[Iftikhar Mehar]

show ip sockets

Regards,
Iftikhar

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Xu Hu
Sent: 13 August 2012 16:50
To: Chris Knipe
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] TCP Timer 70% CPU

Is anyway we can see the tcp connections in the router through show tcp
or something like that?

Thanks and regards,
Xu Hu

On 13 Aug, 2012, at 16:31, Chris Knipe <savage at savage.za.org> wrote:

> Hi,
> 
> Saw 4 sessions that was down and "sh tcp" showed thousands of 
> connections in a CLOSEWAIT state to those neighbors.  I presume that's

> my culprit.
> 
> I shutted the neighbors that was down, but the connections are still 
> in an CLOSEWAIT - looking now to see about resetting them.  CPU usage 
> for the process is slowly starting to come down though, presumably the

> connections are timing out and not being re-created.
> 
> Many thanks,
> Chris.
> 
> 
> 
> On Mon, Aug 13, 2012 at 9:48 AM, Tim Warnock <timoid at timoid.org>
wrote:
>>> I have a Cisco 3825 with 1GB Ram doing some BGP peering (VERY low 
>>> traffic, not even 5mbit/s sustained throughput).  Memory usage is 
>>> absolutely fine and sitting at less than 50% utilization, and
stable.
>>> 
>>> The Router's CPU is showing an almost linear increases, and the 'TCP

>>> Timer' process is currently sitting at over 70% CPU load.  Cisco 
>>> documentation suggests:
>>> TCP Timer
>>> 
>>> What can I look at possibly to determine root cause and fix?
>>> 
>> 
>> Hi Chris,
>> 
>> Any chance one of your BGP sessions are down?
>> 
>> _______________________________________________
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> 
> 
> 
> --
> 
> Regards,
> Chris Knipe
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