Re: [RFC] [patch 5/6] [Network namespace] ipv4 isolation

[Rick Jones]

James Morris wrote:
> On Fri, 9 Jun 2006, dlezcano@xxxxxxxxxx wrote:
>
>
> > When an outgoing packet has the loopback destination addres, the
> > skbuff is filled with the network namespace. So the loopback packets
> > never go outside the namespace. This approach facilitate the migration
> > of loopback because identification is done by network namespace and
> > not by address. The loopback has been benchmarked by tbench and the
> > overhead is roughly 1.5 %
>
>
> I think you'll need to make it so this code has zero impact when not 
> configured.

Indeed, and over stuff other than loopback too.  I'll not so humbly 
suggest :)  netperf TCP_STREAM and TCP_RR figures _with_ CPU 
utilization/service demand measures.

rick jones
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