Subject: Re: interrupt rate from a NIC
To: Kamal R Prasad <firstname.lastname@example.org>
From: Martin Husemann <email@example.com>
Date: 03/07/2003 08:56:32
On Fri, Mar 07, 2003 at 05:49:02AM +0000, Kamal R Prasad wrote:
> I believe a DDoS
> (distributed denial
> of service attack
> can cause wire-speed
> traffic to come in
> from all over the
> net and cause a high
> interrupt rate even
> in non-promiscous
Depending on your value of wire-speed. Still unlikely to place unreasonable
interrupt load. Example: my slowest sparc64 machine, an Ultra 5 (270 MHz),
can perfectly cope with wire-speed of it's 100baseTX-fdx interface.
My even slower Sparc LX (32bit sparc v8 at 50MHz, IIRC) can not keep up
with that speed - so it drops packets. TCP handles this and scales down the
speed. No problem.
Ary you looking at some real problem or just making up theories?