Subject: Re: Van Jacobson's net channels and real-time

From: Auke Kok <[email-masked]>
Date: Mon, 24 Apr 2006 09:42:13 -0700

Ingo Oeser wrote:
> On Saturday, 22. April 2006 15:49, Jörn Engel wrote:
>> That was another main point, yes.  And the endpoints should be as
>> little burden on the bottlenecks as possible.  One bottleneck is the
>> receive interrupt, which shouldn't wait for cachelines from other cpus
>> too much.
> 
> Thats right. This will be made a non issue with early demuxing
> on the NIC and MSI (or was it MSI-X?) which will select
> the right CPU based on hardware channels.

MSI-X. with MSI you still have only one cpu handling all MSI interrupts and 
that doesn't look any different than ordinary interrupts. MSI-X will allow 
much better interrupt handling across several cpu's.

Auke