Re: Cisco ASA and FWSM

[<nick.nauwelaerts () thomson com>]

> -----Original Message-----
> From: firewall-wizards-bounces () listserv cybertrust com 
> [mailto:firewall-wizards-bounces () listserv cybertrust com] On 
> Behalf Of Timo Schoeler
> Sent: Monday, April 30, 2007 15:35
> To: Firewall Wizards Security Mailing List
> Cc: drsharp () pacbell net
> Subject: Re: [fw-wiz] Cisco ASA and FWSM
> >     ASA top model supports (8) gig interfaces, but ether channel
> > still does not appear to be supported. Not a big deal as the top ASA
> > only supports up to 1.2gbs throughput.
>
> yeah, and for the ASA-5520 (e.g.) they share one single interrupt.
> worst hardware design ever.

Why would that be? Sharing interrupts will result in less context
switches. Different interrupts will result in a context switch for each
interrupt, while shared interrupts can handle multiple interrupts can be
handled in the same context switch. And running their drivers in polling
mode instead of interrupt mode would make this even matter less, which
would make quite some sense in the ASA's case.

// nick
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