[nsp] High CPU question

[Gert Doering]

Hi,

On Sun, Apr 25, 2004 at 02:53:19PM -0600, James Edwards wrote:
> Since both numbers are the same, the processor 
> is spending all it's time switching packets ?

That's what the documentation says, yes :-)

The interesting thing is "why is packet switching so expensive" - and the
answer can be:

 - *lots* of packets (obvious)
 - "expensive" packets (NAT, ACLs, ...)
 - "additional work" (ARPing for each packet, IP/Flow Accounting, ...)

It is *not* "fall back to slow path", because that would show up as 
"IP Input".

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
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