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

Rick Jones
2006-06-10T00:27:57Z

James Morris wrote:
> On Fri, 9 Jun 2006, dlezcano@fr.ibm.com 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