[c-nsp] Arp Input Process Causing Spike in CPU

Tony Li tli at cisco.com
Thu Mar 15 12:46:36 EST 2007


On Mar 15, 2007, at 10:16 AM, Gert Doering wrote:

> Hi,
>
> On Thu, Mar 15, 2007 at 10:40:22AM -0400, Christian Koch wrote:
>> Mar 15 07:39:13: %FIB-2-FIBDOWN: CEF has been disabled due to a low
>> memory condition.
>
> Now *that* means "you need more memory.  quickly".
>
> It won't help with your ARP churn rate.


Actually, it might lower the ARP CPU rate.   When memory is low or  
fragmented, the memory allocator is no longer going to be constant time.

Tony


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